@article {1726, title = {Microstructure characterization and process-structure correlations in SiC/BN/SiC minicomposites}, journal = {Acta Materialia}, volume = {264}, year = {2024}, pages = {119589}, issn = {1359-6454}, doi = {10.1016/j.actamat.2023.119589}, url = {http://dx.doi.org/10.1016/j.actamat.2023.119589}, author = {Christensen, Victoria L. and Samuel, Avery F. and Han, Nicholas and Zok, Frank W.} } @article {1671, title = {An integrated analysis of transport, oxidation, and creep during oxidation of interior pores in SiC}, journal = {Journal of the American Ceramic Society}, volume = {106}, year = {2023}, pages = {3736{\textendash}3748}, doi = {10.1111/jace.19015}, url = {https://doi.org/10.1111/jace.19015}, author = {Stephen Sehr and Virginia Collier and Frank Zok and Matthew R. Begley} } @article {1721, title = {Interactions of hafnia/hafnon composites with molten silicate deposits}, journal = {Journal of the European Ceramic Society}, volume = {43}, year = {2023}, pages = {5359{\textendash}5372}, issn = {0955-2219}, doi = {10.1016/j.jeurceramsoc.2023.04.058}, url = {http://dx.doi.org/10.1016/j.jeurceramsoc.2023.04.058}, author = {Ericks, Andrew R. and Holgate, Collin S. and Taylor, Aidan A. and Levi, Carlos G. and Zok, Frank W.} } @article {1666, title = {Oxide growth and stress evolution underneath cracked environmental barrier coatings}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {175}, year = {2023}, pages = {105275}, doi = {10.1016/j.jmps.2023.105275}, url = {https://doi.org/10.1016/j.jmps.2023.105275}, author = {Stephen Sehr and Virginia Collier and Frank Zok and Matthew R. Begley} } @article {1626, title = {A 3D Bi-material Lattice Concept for Tailoring Compressive Properties}, journal = {Materials \& Design}, year = {2022}, pages = {111265}, abstract = {

The current article explores 3D bi-material lattice concepts for tailoring compressive stress-strain response. The unit cells of the lattices consist of six stiff inclined struts that together form the edges of two stacked tetrahedra. The central plane (between the two tetrahedra) contains elastomeric elements that stretch when the lattice is compressed. The geometric configurations of the elastomers examined here include: (i) straight struts between each node pair within the central plane, (ii) multiple struts between each node pair, including one straight strut and one or more curved struts, and (iii) flat sheets, either uniform or graded in thickness, connected at the mid-plane nodes. Assessments of the concepts are made using analytical models, finite element simulations, and experiments on lattices fabricated by 3D printing. The experimental results affirm the understanding of mechanical response gleaned from the models and highlight the importance of joint design in attaining large straining capacity and strain reversibility. They also demonstrate a nearly twofold increase in load bearing capacity when straight struts are replaced by graded sheets. The work also raises the prospects for computational design optimization for maximum efficiency in material use.

}, doi = {https://doi.org/10.1016/j.matdes.2022.111265}, url = {https://www.sciencedirect.com/science/article/pii/S0264127522008875}, author = {Ruschel, Amanda L and Samuel, Avery F and Martinez, Marco Colin and Begley, Matthew R and Zok, Frank W} } @article {1591, title = {Cracking during pyrolysis of preceramic polymers within glass microtubes}, journal = {Journal of the American Ceramic Society}, year = {2022}, abstract = {

Cracking of preceramic polymers during pyrolysis under highly-constrained conditions is examined by X-ray computed tomography of fine glass microtubes containing the pyrolyzing material. The microtubes represent model geometries that mimic the long channels between fibers during production of ceramic composites by precursor impregnation and pyrolysis. Complementary fracture mechanics analyses of interface cracking and crack kinking are used to glean insights into the conditions under which periodic alternating cracks form. A key finding is that alternating cracks are an\ inherent feature of constrained pyrolysis. This feature is attributable in large part to the high energy release rates for interface cracks to kink into the pyrolyzing material under the hydrostatic tension developed during pyrolysis. It also requires interfaces with toughness comparable to that of the pyrolyzing material, to prevent large-scale interface separation. The results further indicate the need for small uniform spaces for pyrolysis within fiber preforms in order to produce networks of fine periodic pyrolysis cracks; these networks in turn facilitate impregnation and pyrolysis in subsequent processing cycles.

}, doi = {https://doi.org/10.1111/jace.18326}, url = {https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.18326}, author = {Larson, Natalie M and Summers, William D and Zok, Frank W} } @article {1621, title = {Insights into internal oxidation of SiC/BN/SiC composites}, journal = {Journal of the American Ceramic Society}, year = {2022}, url = {https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18834?af=R}, author = {Christensen, Victoria L and Zok, Frank W} } @article {1596, title = {Protocol for selecting exemplary silicate deposit compositions for evaluating thermal and environmental barrier coatings}, journal = {Journal of the American Ceramic Society}, year = {2022}, month = {02/2022}, abstract = {

Cracking of preceramic polymers during pyrolysis under highly-constrained conditions is examined by X-ray computed tomography of fine glass microtubes containing the pyrolyzing material. The microtubes represent model geometries that mimic the long channels between fibers during production of ceramic composites by precursor impregnation and pyrolysis. Complementary fracture mechanics analyses of interface cracking and crack kinking are used to glean insights into the conditions under which periodic alternating cracks form. A key finding is that alternating cracks are an\ inherent feature of constrained pyrolysis. This feature is attributable in large part to the high energy release rates for interface cracks to kink into the pyrolyzing material under the hydrostatic tension developed during pyrolysis. It also requires interfaces with toughness comparable to that of the pyrolyzing material, to prevent large-scale interface separation. The results further indicate the need for small uniform spaces for pyrolysis within fiber preforms in order to produce networks of fine periodic pyrolysis cracks; these networks in turn facilitate impregnation and pyrolysis in subsequent processing cycles.

}, url = {https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.18413}, author = {Ericks, Andrew R and Zok, Frank W and Poerschke, David L and Levi, Carlos G} } @article {1676, title = {Quasi-static and dynamic response of a Cu/Nb composite following equal channel angular extrusion}, journal = {Materials Science and Engineering: A}, volume = {853}, year = {2022}, pages = {143711}, doi = {10.1016/j.msea.2022.143711}, url = {https://doi.org/10.1016/j.msea.2022.143711}, author = {A.F. Samuel and Z.S. Levin and C.P. Trujillo and S.J. Fensin and M.J. Demkowicz and I.J. Beyerlein and F.W. Zok} } @article {1586, title = {Recession of BN coatings in SiC/SiC composites through reaction with water vapor}, journal = {Journal of the American Ceramic Society}, volume = {105}, year = {2022}, pages = {498{\textendash}511}, abstract = {

The mechanical response of ceramic matrix composites depends critically on the slip along the matrix\–fiber interface, which is usually achieved with thin coatings on the fibers. Environmental attack of such coatings (enabled by ingress of reac- tants through matrix cracks) often leads to significant degradation, through the removal of the coating via volatilization and oxidation of exposed SiC surfaces. The extent of the volatilization region extending from the matrix crack plane (i.e., recession length) is strongly coupled to the formation of oxide, which ulti- mately fills open gaps and arrests further reactions. This paper presents models to quantify these effects over a broad range of environmental conditions, coat- ing thickness, and matrix crack opening. Analytical solutions are presented for the time to close recession gaps via oxidation, and the associated terminal reces- sion lengths obtained near free surfaces. A broad parameter study illustrates that recession behaviors are controlled by a competition between volatilization and oxidation rates. As such, the extent of recession is highly sensitive to water vapor and temperature, providing an explanation for disparate observations of reces- sion under seemingly similar conditions. The extent of recession in the interior of composites is also illustrated, using a straightforward reaction-transport model. Recession lengths decay rapidly away from the free surface, with the extent of recession penetration scaling with maximum recession at the free surface.

}, url = {https://ceramics.onlinelibrary.wiley.com/doi/pdf/10.1111/jace.18052}, author = {Collier, Virginia E and Xu, Wenbo and McMeeking, Robert M and Zok, Frank W and Begley, Matthew R} } @article {1581, title = {Coating recession effects in ceramic composite strength}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {156}, year = {2021}, pages = {104608}, abstract = {

BN\ fiber coatings\ in SiC-SiC composites are vulnerable to oxidation and volatilization at elevated temperature in the presence of water vapor. These processes lead to coating recession in the composite interior with recession fronts starting from\ matrix cracks\ and proceeding axially along the fibers. In some operational domains, the main effect of recession is to de-couple the fibers from the matrix, precluding load transfer that would otherwise occur through\ frictional sliding. Here we present a modelling framework to address effects of coating recession on composite strength. The framework is built upon the characteristic strengths and transfer lengths that govern fiber and matrix fragmentation during tensile loading. Four dominant behavioral domains are identified and analyzed. Recession causes shifts in the domain boundaries and reductions in composite strength. Variations in degraded strength with the extent of recession are interpreted in terms of\ stress rupture\ plots. In the regime where recession leads to time-dependent fracture, the composite response is defined by two strengths: (i) the pristine composite strength (governed by the\ in situ\ fiber bundle properties) and (ii) a threshold stress below which failure is not predicted to occur (governed by the strength of an equivalent fiber bundle in the absence of a matrix). The time scales are set by the square of the ratio of recession length and the matrix crack spacing, the latter governed by a combination of the matrix strength distribution, interface sliding stress, fiber content and applied stress.

}, url = {https://reader.elsevier.com/reader/sd/pii/S0022509621002519?token=E0904E910FF4D1D96B3FEC2618AAFD9B8699A6A1F0CB1B4C018724E5A2BAEA2E6249F7B98B728ECF40D1E863B2C56BC7\&originRegion=us-east-1\&originCreation=20221213232506}, author = {Zok, Frank W and Collier, Virginia E and Begley, Matthew R} } @article {1571, title = {Tough multimaterial interfaces through wavelength-selective 3D printing}, journal = {ACS Applied Materials \& Interfaces}, volume = {13}, year = {2021}, pages = {22065{\textendash}22072}, url = {https://pubs.acs.org/doi/pdf/10.1021/acsami.1c06062}, author = {Dolinski, Neil D and Callaway, E Benjamin and Sample, Caitlin S and Gockowski, Luke F and Chavez, Roberto and Page, Zachariah A and Eisenreich, Fabian and Hecht, Stefan and Valentine, Megan T and Zok, Frank W and others} } @article {1576, title = {Vapor-mediated melt infiltration for synthesizing SiC composite matrices}, journal = {Journal of the American Ceramic Society}, volume = {104}, year = {2021}, pages = {3833{\textendash}3844}, abstract = {

BN\ fiber coatings\ in SiC-SiC composites are vulnerable to oxidation and volatilization at elevated temperature in the presence of water vapor. These processes lead to coating recession in the composite interior with recession fronts starting from\ matrix cracks\ and proceeding axially along the fibers. In some operational domains, the main effect of recession is to de-couple the fibers from the matrix, precluding load transfer that would otherwise occur through\ frictional sliding. Here we present a modelling framework to address effects of coating recession on composite strength. The framework is built upon the characteristic strengths and transfer lengths that govern fiber and matrix fragmentation during tensile loading. Four dominant behavioral domains are identified and analyzed. Recession causes shifts in the domain boundaries and reductions in composite strength. Variations in degraded strength with the extent of recession are interpreted in terms of\ stress rupture\ plots. In the regime where recession leads to time-dependent fracture, the composite response is defined by two strengths: (i) the pristine composite strength (governed by the\ in situ\ fiber bundle properties) and (ii) a threshold stress below which failure is not predicted to occur (governed by the strength of an equivalent fiber bundle in the absence of a matrix). The time scales are set by the square of the ratio of recession length and the matrix crack spacing, the latter governed by a combination of the matrix strength distribution, interface sliding stress, fiber content and applied stress.

}, url = {https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.17793}, author = {Silverstein, Ravit and Zok, Frank W and Levi, Carlos G} } @article {1546, title = {A bi-material concept for periodic dissipative lattices}, journal = {Journal of the Mechanics and Physics of Solids}, year = {2020}, pages = {104144}, abstract = {

Structural periodic lattices made of two or more dissimilar materials can be viewed conceptually in terms of a spectrum of structure types, bounded by stretch-dominated lattices of a single material at one end and\ tensegrities\ of tensile and compressive struts at the other. The present study probes the unexplored domain within this lattice-tensegrity spectrum with a focus on dissipative bi-material lattices. To begin, a primitive structural motif that exhibits the desired behavior is identified and its compressive response is analyzed. A 2D multi-cell lattice based on the primitive motif is designed and several material variants are fabricated and tested. Analysis of test results addresses effects of finite node dimensions, constraints on strut rotation at the nodes, free edges, and friction with the loading platens as well as limits dictated by rupture of tensile struts or buckling or yielding of compressive struts. The study culminates with guidelines on design of bi-material lattices with high strength and high straining capability.

}, url = {https://reader.elsevier.com/reader/sd/pii/S0022509620303781?token=DA549D98CC9FDD15FAC97BBD0351AC4B730A8ECCDCBA6437FBB973C07993C859F88750F0D68805D6984417B4145775CC\&originRegion=us-east-1\&originCreation=20221213232934}, author = {Ruschel, Amanda L and Zok, Frank W} } @article {1566, title = {Damping in cellular structures made from composite struts and walls with elastic and viscoelastic phases}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {145}, year = {2020}, pages = {104106}, abstract = {

Emerging three-dimensional printing approaches enable cellular structures with composite walls or struts, creating new opportunities for architected materials with high specific stiffness and damping. This paper describes the damped dynamic response of composite walls comprising elastic and viscoelastic phases, and quantifies the scaling between material and structural loss factors. These descriptions are embedded in a highly efficient finite element framework to predict the steady-state frequency-dependent dynamic response of cellular structures, with an emphasis on structural loss factors arising from\ viscoelasticity. The framework is then used to compare the response of prismatic structures comprising hexagonal, triangular, rhombic and Kagome cells, and to quantify the scaling relationships between cell properties, structural loss factors and material loss factors. Case studies of structures with heterogeneous cell shapes and composite walls illustrate that significant damping gains are possible through architecture. Increases of a factor of two are possible using simple\ lattice distortions\ in a\ monolithic material, while increases of a factor of ten can be achieved with composite walls when the damping material has a loss factor of\ \ and a modulus of at least 1\% of the elastic phase. The results strongly suggest that future topology and\ materials optimization\ will enable dramatic gains in damping.

}, doi = {https://doi.org/10.1016/j.jmps.2020.104106}, url = {https://www.sciencedirect.com/science/article/pii/S0022509620303409}, author = {Wehmeyer, Steven C and Compton, Brett G and Pro, J William and Zok, Frank and Begley, Matthew R} } @article {1451, title = {Degradation of a SiC-SiC composite in water vapor environments}, journal = {Journal of the American Ceramic Society}, volume = {103}, year = {2020}, pages = {1927{\textendash}1941}, url = {https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16838}, author = {Zok, Frank W and Maxwell, Peter T and Kawanishi, Ken and Callaway, Evan Benjamin} } @article {1681, title = {Perspectives on the craft of scientific research: A conceptual organizational framework for creating research pedagogy}, journal = {MRS Bulletin}, volume = {45}, year = {2020}, pages = {605{\textendash}608}, doi = {10.1557/mrs.2020.207}, url = {https://doi.org/10.1557/mrs.2020.207}, author = {Frank W. Zok} } @article { ISI:000505834600001, title = {Reactions of molten silicate deposits with yttrium monosilicate}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {103}, number = {4}, year = {2020}, month = {APR}, pages = {2919-2932}, abstract = {

The article addresses effects of silicate deposit composition on reactions with yttrium monosilicate (YMS), a candidate environmental barrier coating for aero-engine components. Computed phase equilibria are used to predict the nature and relative proportions of reaction products and the extent of YMS consumption upon reaction with twelve deposits of varying composition at 1300 degrees C. These predictions are compared with results of a corresponding experimental study on three exemplary deposits. Although the nature and sequence of reaction products formed (typically apatite and yttrium disilicate) depend on the Ca:Si ratio of the deposit, the degree of consumption of YMS at equilibrium is relatively insensitive to deposit composition and is predicted to proceed to a greater extent than that in yttrium disilicate. However, sluggish reaction kinetics associated with the formation of a thin apatite layer above the YMS prevents reactions from reaching their terminal equilibrium states within the experimental times investigated (250 hours). For deposit loadings of 18 mg/cm(2) (corresponding to a thickness of about 100 mu m), the degree of consumption following 250 hours exposures is only about 10\%-40\% of the predicted terminal values, depending on deposit composition.

}, issn = {0002-7820}, url = {https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16972}, author = {Summers, William D. and Poerschke, David L. and Taylor, Aidan A. and Ericks, Andrew R. and Levi, Carlos G. and Zok, Frank W.} } @article {1456, title = {Strain fields around strain-concentrating features in fiber-reinforced oxide composites}, journal = {Journal of the American Ceramic Society}, volume = {103}, year = {2020}, pages = {1942{\textendash}1955}, abstract = {

Inelastic straining in the vicinity of strain-concentrating features in fiber-reinforced ceramic composites mitigates the high stresses that would otherwise be present and therefore alters the local conditions required to initiate fracture. The present study examines such effects through experimental measurements of strain fields around holes and notches in two oxide composites coupled with finite element simulations based on an inelastic constitutive model for the composite response. Computed strains fall within the bounds of experimental measurements for open-hole tension over most of the loading history. The results motivate a fracture criterion based on attainment of a critical normal strain over a characteristic area. The response of single edge-notched tensile specimens proves to be more challenging; because of the finite bending stiffness of the loading train, the boundary conditions on the test specimens evolve during loading, with bending playing an increasingly important role as the applied load is increased.

}, url = {https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16840}, author = {Samuel, Avery F and Christodoulou, Paul G and Zok, Frank W} } @article { ISI:000525896300011, title = {Tensile response of unidirectional ceramic minicomposites}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {138}, year = {2020}, month = {MAY}, pages = {103903}, abstract = {Mechanical response of ceramic matrix composites is critically dependent on properties of fibers and fiber coatings. In the present study, we examine effects of these and other constituent properties on the tensile response of unidirectionally-reinforced composites through a combination of existing models of fiber fracture, Monte Carlo simulations of concurrent matrix and fiber fragmentation, and complementary experimental measurements. The results show that, contrary to prevailing understanding, the process of fiber fragmentation cannot go to completion in a uniaxial tensile test. At low stresses (before the maximum), fiber breaks are essentially random throughout the bundle; in contrast, at the stress maximum, all additional breaks are localized to regions close to the fracture plane (within a distance dictated by the characteristic transfer length). Therefore, the resulting distributions in fiber pullout length and strength of pulled-out fibers do not match predictions from existing models. Although the composite stress-strain response associated with fragmentation can be accurately predicted by existing fragmentation models, accurate prediction of the point of instability requires consideration of the local response of fibers in the most heavily strained regions (within matrix crack planes). The response in the latter regions leads to instability at stresses and strains that are lower than those obtained from the average stress-strain response. Additionally, the composite strength and failure strain are found to be sensitive to the fiber volume fraction and the matrix strength distribution. One implication is that the full potential of the fibers may not be realizable in composites of practical interest. (C) 2020 Elsevier Ltd. All rights reserved.}, issn = {0022-5096}, doi = {10.1016/j.jmps.2020.103903}, author = {Callaway, E. Benjamin and Zok, Frank W.} } @article {1446, title = {Defect sensitivity of truss strength}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {124}, year = {2019}, pages = {489{\textendash}504}, abstract = {

Periodic trusses with missing or defective struts may exhibit reduced strength relative to those of otherwise pristine trusses. The principal goal of the present study is to determine the extent to which individual strut defects and free surfaces, both separately and together, elevate strains in neighboring struts and, in turn, the\ effects of strain\ elevations on truss strength, especially in trusses made from elastic-brittle materials. The goals are pursued through finite element analyses of three stretch-dominated truss structures with low relative density under uniaxial\ compressive loading. In all cases considered, strain elevations due to bulk defects (distant from free surfaces) are comparable to or lower than those associated with the surfaces themselves. Although defects located at truss corners and truss edges cause the highest elevations in strut strains, their effects on truss strength are small (5\–25\%). Guidelines are presented for the minimal tensile\ fracture strain\ of the constituent material required to achieve the full strength potential of the truss, dictated by large-scale strut buckling.

}, url = {https://www.sciencedirect.com/science/article/pii/S0022509618304848}, author = {Latture, Ryan M and Begley, Matthew R and Zok, Frank W} } @article {1426, title = {Deformation, rupture and sliding of fiber coatings in ceramic composites}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {132}, year = {2019}, pages = {103673}, abstract = {

We examine the mechanics of\ shear deformation, rupture and\ frictional sliding\ of\ fiber coatings\ in ceramic composites through a combination of experiments, modeling and computational simulations. The work includes fiber push-in tests in several prototypical SiC-SiC composites with\ BN\ coatings on the fibers, using an established model of brittle interface fracture and subsequent sliding to interpret the data. The test results reveal two distinct behaviors: one in which a crack appears to form suddenly within the coating or at one of the interfaces with neighboring phases, followed by interface sliding (in accord with the established model), and another in which yielding of the BN occurs first, followed by rupture and sliding. Deficiencies in the existing brittle interface model are addressed through extensions of the model that account for coating plasticity prior to rupture. An analytical model based on\ shear lag\ analysis is developed and validated by\ finite element calculations\ and subsequently used in the interpretation of the test data. The work provides a new framework for interpreting fiber push-in results, including ways to ascertain the mechanism that governs the stress for push-in initiation and for extracting pertinent coating properties. It also highlights the important role of plasticity in the design and performance of fiber coatings for ceramic composites.

}, url = {https://www.sciencedirect.com/science/article/pii/S0022509619304193}, author = {Callaway, EB and Christodoulou, PG and Zok, FW} } @article {1436, title = {Integrating lattice materials science into the traditional processing{\textendash}structure{\textendash}properties paradigm}, journal = {MRS Communications}, volume = {9}, year = {2019}, pages = {1284{\textendash}1291}, abstract = {

Periodic lattice materials have been studied extensively in numerous science and engineering fields. Despite the vast knowledge that has emerged, the activities have been stove-piped within individual research communities, often in isolation from those in related fields. To bring this work into a holistic framework, the present article considers the elements needed to integrate the study of lattice materials into the processing\–structure\–properties paradigm that underpins materials science as an academic discipline. The emphasis is on concepts of structure involving\ topology, morphology,\ and defects\ of lattice materials, with illustrations of structure\–property relations in the context of lattice strength

}, doi = { https://doi.org/10.1557/mrc.2019.152}, author = {Zok, Frank W} } @article { ISI:000501653300003, title = {Post-buckling and dynamic response of angled struts in elastic lattices}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {133}, year = {2019}, month = {DEC}, pages = {103693}, abstract = {This paper presents analytical and reduced-order numerical solutions describing the nonlinear response of slender, elastic struts (or plates) inclined relative to the loading direction. The solutions provide a highly efficient framework to predict post-buckling behaviors in cellular structures, including: stability regimes, peak strains during and after buckling, the work dissipated via cyclic loading, the impact of biaxial loading, and the role of geometric imperfections in the struts. Regime maps are presented that illustrate configurations that lead to snap-through, permanent deformation after unloading, strut failure, and enhanced hysteresis during cyclic loading. The maps illustrate that reversible snap-through events only occur within a very specific range of relative density (e.g. similar to 0.25 - 0.4 for rhombic lattices). A highly efficient non-linear single degree-of-freedom dynamics model is derived from the statics solution, and is shown to be in excellent agreement with fully explicit, non-linear, dynamic finite element simulations for inclined struts. This simplified dynamics model is used to quantify the relationships between quasi-static responses, loading frequencies and energy dissipation during cycling loading. A key finding is that effective damping during cyclic loading is dramatically increased by non-linear behavior, even when the corresponding quasi-static result exhibits zero hysteresis. The implications for structured foams and the design of lightweight structural dampers is briefly discussed. (C) 2019 Published by Elsevier Ltd.}, issn = {0022-5096}, doi = {10.1016/j.jmps.2019.103693}, author = {Wehrneyer, Steven and Zok, Frank W. and Eberl, Christopher and Gumbsch, Peter and Cohen, Noy and McMeeking, Robert M. and Begley, Matthew R.} } @article {1431, title = {Transition from penetration cracking to spallation in environmental barrier coatings on ceramic composites}, journal = {Surface and Coatings Technology}, volume = {378}, year = {2019}, pages = {125083}, abstract = {

The article addresses the competition between driving forces for penetration cracking and for spallation in bilayer environmental barrier coatings on SiC-based composites. Coatings of interest consist of an outer rare-earth monosilicate (MS) and an inner rare-earth disilicate (DS). Finite element analysis is used to compute energy release rates (ERR) for cracking as functions of misfit strains, layer thicknesses and size of putative cracks. The results indicate that, for certain property combinations, ERRs for spallation in the DS layer exceed those for continued penetration. The implication is that penetration cracks could branch and cause coating spallation. A case study comparing bilayers of Yb- and Y-silicates reveals domains in which (i) the tolerable thickness of MS is high, but eventual spallation could potentially remove the entire DS coating along with the adjoining MS, and (ii) the tolerable thickness of MS is low, but, if it were to occur, spallation would follow a path near the MS/DS interface, leaving most of the DS intact. The behaviors prove to be sensitive to the thermal expansion coefficient of the underlying composite, even over the rather narrow range of values typical of SiC-based composites.

}, doi = {https://doi.org/10.1016/j.surfcoat.2019.125083}, author = {Summers, William D and Begley, Matthew R and Zok, Frank W} } @article {1441, title = {X-ray computed tomography of microstructure evolution during matrix impregnation and curing in unidirectional fiber beds}, journal = {Composites Part A: Applied Science and Manufacturing}, volume = {117}, year = {2019}, pages = {243{\textendash}259}, abstract = {

Microstructural evolution\ during axial impregnation and subsequent curing of a preceramic polymer in unidirectional\ ceramic fiber\ beds is studied using X-ray computed\ tomography. The principal goal is to identify connections between void locations, void sizes, local fiber bed porosity, fiber movement, and impregnation conditions. The degree of saturation after impregnation is found to increase with instantaneous capillary number. But, because of the need to create pathways for gas escape during curing, fiber beds with high saturation after impregnation show the largest reductions in saturation during curing. Notwithstanding, saturation after curing increases with instantaneous capillary number. Voids tend to form in the largest channels between fibers, where the local fiber bed porosity is high, during both impregnation and curing.\ Void formation\ is typically accompanied by fiber movement that increases both the local fiber bed porosity near voids and the overall non-uniformity in the fiber bed, as measured by local porosity entropy.

}, doi = {https://doi.org/10.1016/j.compositesa.2018.11.021}, author = {Larson, Natalie M and Cuellar, Charlene and Zok, Frank W} } @article {1336, title = {Design and mechanical properties of elastically isotropic trusses}, journal = {Journal of Materials Research}, volume = {33}, year = {2018}, pages = {249{\textendash}263}, abstract = {

The present article addresses design of stiff, elastically isotropic trusses and their mechanical properties. Isotropic trusses are created by combining two or more elementary cubic trusses in appropriate proportions and with their respective nodes lying on a common space lattice. Two isotropic binary compound trusses and many isotropic ternary trusses are identified, all with Young\’s moduli equal to the maximal possible value for isotropic strut-based structures. In finite-sized trusses, strain elevations are obtained in struts near the external free boundaries: a consequence of reduced nodal connectivity and thus reduced constraint on strut deformation and rotation. Although the boundary effects persist over distances of only about two unit cell lengths and have minimal effect on elastic properties, their manifestations in failure are more nuanced, especially when failure occurs by modes other than buckling (yielding or fracture). Exhaustive analyses are performed to glean insights into the mechanics of failure of such trusses.

}, doi = {10.1557/jmr.2018.2}, author = {Latture, Ryan M. and Begley, Matthew R. and Zok, Frank W.} } @article {1331, title = {Effects of nodal fillets and external boundaries on compressive response of an octet truss}, journal = {Acta Materialia}, year = {2018}, abstract = {

Additive manufacturing\ has enabled fabrication of weight-efficient periodic trusses over a wide range of length scales. The principal objective of the present study is to address two coupled aspects of truss design and performance: (i) the extent to which circular nodal fillets enhance node stiffness and alleviate stress concentrations, and (ii) the extent to which external boundaries affect local strut strains. To this end, octet trusses with and without filleted nodes were fabricated out of a hard\ thermoplastic\ and tested in compression, with digital image correlation used to monitor axial and bending strut strains and nodal rotations. Complementary finite element simulations were also performed. Macroscopic compressive failure occurs through bending and buckling of certain inclined struts followed by\ tensile\ rupture of struts oriented perpendicular to the loading direction. The struts experiencing the highest\ tensile strain\ and most prone to rupture are those located along the truss mid-plane and that intersect external edges. Additional boundary effects are manifested in exacerbated nodal rotations and bending of inclined struts intersecting the truss corners. Although buckling begins in the affected struts, large-scale buckling is preceded by tensile rupture. The implications for design and failure prediction of finite truss structures are discussed.

}, doi = {10.1016/j.actamat.2017.12.060}, author = {Latture, Ryan M. and Rodriguez, Ricardo X. and Holmes, Larry R. and Zok, Frank W.} } @article {1346, title = {Insights from in-situ X-ray computed tomography during axial impregnation of unidirectional fiber beds}, journal = {Composites Part A: Applied Science and Manufacturing}, volume = {107}, year = {2018}, pages = {124{\textendash}134}, abstract = {

In-situ\ X-ray computed\ tomography\ during axial impregnation of unidirectional fiber beds is used to study coupled effects of fluid velocity, fiber movement and preferred flow channeling on permeability. In order to interpret the experimental measurements, a new computational tool for predicting axial permeability of very large 2D arrays of non-uniformly packed fibers is developed. The results show that, when the impregnation velocity is high, full saturation is attained behind the flow front and the fibers rearrange into a less uniform configuration with higher permeability. In contrast, when the velocity is low, fluid flows preferentially in the narrowest channels between fibers, yielding unsaturated permeabilities that are lower than those in the saturated state. These insights combined with a new computational tool will enable improved prediction of permeability, ultimately for use in optimization of composite manufacturing via liquid impregnation.

}, doi = {10.1016/j.compositesa.2017.12.024}, author = {Larson, Natalie M. and Zok, Frank W.} } @article {1341, title = {In-situ 3D visualization of composite microstructure during polymer-to-ceramic conversion}, journal = {Acta Materialia}, volume = {144}, year = {2018}, pages = {579{\textendash}589}, abstract = {

One route for producing fiber-reinforced ceramic-matrix composites entails repeated impregnation and pyrolysis of a preceramic polymer in a fiber\ preform. The process relies crucially on the development of networks of\ contiguous\ cracks during pyrolysis, thereby allowing further impregnation to attain nearly-full densification. The present study employs\ in-situ\ x-ray computed\ tomography\ (XCT) to reveal in three dimensions the evolution of matrix structure during pyrolysis of a SiC-based preceramic polymer to 1200 \°C. Observations are used to guide the development of a taxonomy of\ crack geometries\ and crack structures and to identify the temporal sequence of their formation. A quantitative analysis is employed to characterize effects of local microstructural dimensions on the conditions required to form cracks of various types. Complementary measurements of gas evolution and mass loss of the preceramic polymer during pyrolysis as well as changes in mass density and\ Young\&$\#$39;s modulus\ provide context for the physical changes revealed by XCT. The findings provide a foundation for future development of physics-based models to guide composite fabrication processes.

}, doi = {10.1016/j.actamat.2017.10.054}, author = {Larson, Natalie M. and Zok, Frank W.} } @article {1326, title = {Interaction of yttrium disilicate environmental barrier coatings with calcium-magnesium-iron alumino-silicate melts}, journal = {Acta Materialia}, volume = {145}, year = {2018}, pages = {451{\textendash}461}, abstract = {

Reactions between molten calcium-magnesium-iron alumino-silicate (CMFAS) deposits and\ yttrium\ disilicate (Y2Si2O7, YDS) based environmental barrier coatings (EBC) on SiC/SiC\ ceramic matrix composites\ (CMCs) were investigated at 1300 \°C. The coating readily dissolves into the melt from which an\ apatite\ phase, nominally Ca2Y8(SiO4)6O2, precipitates. These reactions are sufficiently fast to consume the majority of the approximately 275 \μm thick coating in 24 h. Liquid phase separation, producing an essentially pure SiO2\ second phase, occurs near the reaction front suggesting dissimilar rates of CaO and SiO2\ exchange with the overlaying deposit. The rise of large bubbles through the melt above the coatings appears to disrupt the reaction layer and distributes apatite throughout the residual deposit. Channel cracks were found in the deposits and the reaction layers; after longer exposures, the cracks branch and extend laterally through the Si bond coat and into the underlying CMC. Complementary experiments performed on monolithic YDS pellets yielded long-term recession rates similar to those of the coatings, although some differences were evident in recession rates and reaction layer morphologies in the early stages. Thermodynamic calculations were used to understand the evolving driving force for the YDS-to-apatite conversion. The agreement between the simulated and experimentally observed behaviors suggests that such calculations could be used to predict the influence of temperature and deposit composition on EBC degradation.

}, doi = {10.1016/j.actamat.2017.12.004}, author = {Poerschke, David L. and Shaw, John H. and Verma, Nisha and Zok, Frank W. and Levi, Carlos G.} } @article {1466, title = {Roles of composition and temperature in silicate deposit-induced recession of yttrium disilicate}, journal = {Acta Materialia}, volume = {160}, year = {2018}, pages = {34{\textendash}46}, abstract = {

Reactions between silicate deposits and environmental barrier coatings (EBCs) for SiC/SiC composites can severely degrade coating performance. The goal of the present study is to elucidate effects of deposit composition and exposure temperature and time on the recession of\ yttrium\ disilicate (YDS), a candidate EBC material.\ Phase equilibrium\ calculations are used to predict reactions of YDS with deposits of twelve different compositions at 1300 \°C and 1400 \°C; experimental observations are reported for three exemplary compositions at both temperatures and compared with the thermodynamic predictions. For initial deposit thicknesses of about 100 \μm, recession depths reach terminal values after exposures of about 100 h. Terminal recession depths are sensitive to deposit composition but are only weakly affected by temperature. Deposits with high initial Ca:Si ratios react most severely with YDS, forming thick layers containing\ apatite\ interpenetrated by residual melt, whereas reactions with deposits that have Ca:Si ratios below a threshold for apatite formation are more benign, albeit still significant.

}, doi = {https://doi.org/10.1016/j.actamat.2018.08.043}, author = {Summers, William D and Poerschke, David L and Park, Daesung and Shaw, John H and Zok, Frank W and Levi, Carlos G} } @article { ISI:000443807400008, title = {Solution Mask Liquid Lithography (SMaLL) for One-Step, Multimaterial 3D Printing}, journal = {ADVANCED MATERIALS}, volume = {30}, number = {31}, year = {2018}, month = {AUG 2}, pages = {1800364}, abstract = {A novel methodology for printing 3D objects with spatially resolved mechanical and chemical properties is reported. Photochromic molecules are used to control polymerization through coherent bleaching fronts, providing large depths of cure and rapid build rates without the need for moving parts. The coupling of these photoswitches with resin mixtures containing orthogonal photo-crosslinking systems allows simultaneous and selective curing of multiple networks, providing access to 3D objects with chemically and mechanically distinct domains. The power of this approach is showcased through the one-step fabrication of bioinspired soft joints and mechanically reinforced {\textquoteleft}{\textquoteleft}brick-and-mortar{\textquoteright}{\textquoteright} structures.}, issn = {0935-9648}, doi = {10.1002/adma.201800364}, author = {Dolinski, Neil D. and Page, Zachariah A. and Callaway, E. Benjamin and Eisenreich, Fabian and Garcia, V, Ronnie and Chavez, Roberto and Bothman, David P. and Hecht, Stefan and Zok, Frank W. and Hawker, Craig J.} } @article {1461, title = {Weibull parameters obtained from dependence of fiber strength on fiber length and area}, journal = {Journal of the American Ceramic Society}, volume = {101}, year = {2018}, pages = {4719{\textendash}4731}, abstract = {

Weibull strength parameters of ceramic fibers can be inferred from variations in strength with fiber diameter or gauge length. The goal of this article is to provide a critical assessment of the efficacy of these methods. The issues are addressed using theorems in regression analysis and uncertainty propagation as well as Monte Carlo simulations. The results show that, when Weibull moduli are obtained from strength variations with fiber area, inordinately large sample sizes (\>1000) are required to achieve reliable results. In contrast, Weibull moduli can be accurately estimated from the dependence of average fiber strength on gauge length for a modest sample size at each of two gauge lengths, provided the gauge length range is sufficiently large. The dependence of strengths of bundles containing many (ca. 500) fibers on gauge length yields yet more reliable results. The results are used to assess the fidelity of Weibull moduli obtained from these methods and provide guidance for preferred test methods.

}, doi = { https://doi.org/10.1111/jace.15709}, author = {Callaway, Evan Benjamin and Zok, Frank W} } @article { ISI:000397503100041, title = {Accurate determination of fiber strength distributions}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {100}, number = {3}, year = {2017}, month = {MAR}, pages = {1202-1211}, issn = {0002-7820}, doi = {10.1111/jace.14677}, author = {Callaway, Evan Benjamin and Zok, Frank W.} } @article {1361, title = {Insight into 3D micro-CT data: exploring segmentation algorithms through performance metrics}, journal = {Journal of Synchrotron Radiation}, volume = {24}, year = {2017}, pages = {1065{\textendash}1077}, doi = {10.1107/s1600577517010955}, author = {Perciano, Talita and Ushizima, Daniela and Krishnan, Harinarayan and Parkinson, Dilworth and Larson, Natalie and Pelt, Dani{\"e}l M. and Bethel, Wes and Zok, Frank and Sethian, James} } @article { ISI:000399610800045, title = {Intermediate temperature oxidative strength degradation of a SiC/SiNC composite with a polymer-derived matrix}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {100}, number = {4}, year = {2017}, month = {APR}, pages = {1606-1617}, issn = {0002-7820}, doi = {10.1111/jace.14741}, author = {Poerschke, David L. and Rossol, Michael N. and Zok, Frank W.} } @article {1371, title = {Intermediate temperature oxidative strength degradation of a SiC/SiNC composite with a polymer-derived matrix}, journal = {Journal of the American Ceramic Society}, volume = {100}, year = {2017}, pages = {1606{\textendash}1617}, doi = {10.1111/jace.14741}, author = {Poerschke, David L. and Rossol, Michael N. and Zok, Frank W.} } @article {1351, title = {Reactive alloy melt infiltration for SiC composite matrices: Mechanistic insights}, journal = {Journal of the American Ceramic Society}, volume = {100}, year = {2017}, pages = {5471{\textendash}5481}, doi = {10.1111/jace.15167}, author = {Reitz, Rebecca B. and Zok, Frank W. and Levi, Carlos G.} } @article {1356, title = {Strengths of ceramic fiber bundles: Theory and practice}, journal = {Journal of the American Ceramic Society}, volume = {100}, year = {2017}, month = {Nov}, pages = {5306{\textendash}5317}, doi = {10.1111/jace.15062}, author = {Callaway, Evan B. and Zok, Frank W.} } @article { ISI:000399610800003, title = {On weakest link theory and Weibull statistics}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {100}, number = {4}, year = {2017}, month = {APR}, pages = {1265-1268}, abstract = {

This communication addresses some common misconceptions about weakest link theory and Weibull statistics as they pertain to strength distributions of brittle fibers. After describing the nature of the problem, the flaws in ensuing proposed models of strength distributions are highlighted and discussed. A way forward that obviates the problems is suggested.

}, issn = {0002-7820}, doi = {10.1111/jace.14665}, author = {Zok, Frank W.} } @article { ISI:000382353000011, title = {Ceramic-matrix composites enable revolutionary gains in turbine engine efficiency}, journal = {AMERICAN CERAMIC SOCIETY BULLETIN}, volume = {95}, number = {5}, year = {2016}, month = {JUN-JUL}, pages = {22-28}, issn = {0002-7812}, author = {Zok, Frank W.} } @article { ISI:000387218000031, title = {Effects of Preform Shear on Tensile Properties of a Woven C/SiC Composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {99}, number = {9}, year = {2016}, month = {SEP}, pages = {3081-3089}, issn = {0002-7820}, doi = {10.1111/jace.14280}, author = {Shaw, John H. and Rossol, Michael N. and Marshall, David B. and Zok, Frank W.} } @article { ISI:000387218000036, title = {Intermediate Temperature Internal Oxidation of a SiC/SiCN Composite with a Polymer-Derived Matrix}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {99}, number = {9}, year = {2016}, month = {SEP}, pages = {3120-3128}, issn = {0002-7820}, doi = {10.1111/jace.14275}, author = {Poerschke, David L. and Rossol, Michael N. and Zok, Frank W.} } @article { ISI:000386744600011, title = {Periodic truss structures}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {96}, year = {2016}, month = {NOV}, pages = {184-203}, issn = {0022-5096}, doi = {10.1016/j.jmps.2016.07.007}, author = {Zok, Frank W. and Latture, Ryan M. and Begley, Matthew R.} } @article { ISI:000374916700004, title = {Virtual specimens for analyzing strain distributions in textile ceramic composites}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {85}, year = {2016}, month = {JUN}, pages = {40-51}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2016.02.030}, author = {Blacklock, Matthew and Shaw, John H. and Zok, Frank W. and Cox, Brian N.} } @article { ISI:000365363700011, title = {Ballistic impact response of an UHMWPE fiber reinforced laminate encasing of an aluminum-alumina hybrid panel}, journal = {INTERNATIONAL JOURNAL OF IMPACT ENGINEERING}, volume = {86}, year = {2015}, month = {DEC}, pages = {131-144}, issn = {0734-743X}, doi = {10.1016/j.ijimpeng.2015.08.003}, author = {O{\textquoteright}Masta, M. R. and Compton, B. G. and Gamble, E. A. and Zok, F. W. and Deshpande, V. S. and Wadley, H. N. G.} } @article { ISI:000347302000031, title = {Characterizing In-Plane Geometrical Variability in Textile Ceramic Composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {98}, number = {1}, year = {2015}, month = {JAN}, pages = {205-213}, issn = {0002-7820}, doi = {10.1111/jace.13275}, author = {Rossol, Michael N. and Fast, Tony and Marshall, David B. and Cox, Brian N. and Zok, Frank W.} } @article { ISI:000359596000005, title = {A concept for mitigating head injury under translational blunt impact}, journal = {INTERNATIONAL JOURNAL OF CRASHWORTHINESS}, volume = {20}, number = {5}, year = {2015}, month = {SEP 3}, pages = {483-494}, issn = {1358-8265}, doi = {10.1080/13588265.2015.1038866}, author = {Nazarian, O. and Begley, M. R. and Zok, F. W.} } @article { ISI:000366774400017, title = {Effect of design on the performance of steel-alumina bilayers and trilayers subject to ballistic impact}, journal = {MECHANICS OF MATERIALS}, volume = {91}, number = {1}, year = {2015}, month = {DEC}, pages = {241-251}, issn = {0167-6636}, doi = {10.1016/j.mechmat.2015.05.002}, author = {Holland, Chance C. and Gamble, Eleanor A. and Zok, Frank W. and Deshpande, Vikram S. and McMeeking, Robert M.} } @article { ISI:000351050300038, title = {Effects of Tow-Scale Holes on the Mechanical Performance of a 3D Woven C/SiC Composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {98}, number = {3}, year = {2015}, month = {MAR}, pages = {948-956}, issn = {0002-7820}, doi = {10.1111/jace.13389}, author = {Shaw, John H. and Rossol, Michael N. and Marshall, David B. and Zok, Frank W.} } @article { ISI:000356553600017, title = {Effects of weave architecture on mechanical response of 2D ceramic composites}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {74}, year = {2015}, month = {JUL}, pages = {141-152}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2015.04.003}, author = {Rossol, Michael N. and Rajan, Varun P. and Zok, Frank W.} } @article { ISI:000364887400021, title = {Global load-sharing model for unidirectional hybrid fibre-reinforced composites}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {84}, year = {2015}, month = {NOV}, pages = {380-394}, issn = {0022-5096}, doi = {10.1016/j.jmps.2015.08.009}, author = {Swolfs, Yentl and McMeeking, R. M. and Rajan, V. P. and Zok, F. W. and Verpoest, Ignaas and Gorbatikh, Larissa} } @article { ISI:000328262300006, title = {Compressive Response of Pyramidal Lattices Embedded in Foams}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {81}, number = {1}, year = {2014}, month = {JAN}, pages = {011006}, issn = {0021-8936}, doi = {10.1115/1.4024408}, author = {Hammetter, C. I. and Zok, F. W.} } @article { ISI:000342955600008, title = {Constitutive model for the shear response of Dyneema (R) fiber composites}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {66}, year = {2014}, month = {NOV}, pages = {73-81}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2014.06.012}, author = {Nazarian, Oshin and Zok, Frank W.} } @article { ISI:000342955600005, title = {An elastic-plastic constitutive model for ceramic composite laminates}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {66}, year = {2014}, month = {NOV}, pages = {44-57}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2014.06.013}, author = {Rajan, Varun P. and Shaw, John H. and Rossol, Michael N. and Zok, Frank W.} } @article { ISI:000347023600002, title = {Matrix cracking of fiber-reinforced ceramic composites in shear}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {73}, year = {2014}, month = {DEC 15}, pages = {3-21}, issn = {0022-5096}, doi = {10.1016/j.jmps.2014.08.007}, author = {Rajan, Varun P. and Zok, Frank W.} } @article { ISI:000344779900052, title = {Model of Oxidation-Induced Fiber Fracture in SiC/SiC Composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {97}, number = {11}, year = {2014}, month = {NOV}, pages = {3676-3683}, issn = {0002-7820}, doi = {10.1111/jace.13180}, author = {Xu, Wenbo and Zok, Frank W. and McMeeking, Robert M.} } @article { ISI:000330350100014, title = {Optimal Material Properties for Mitigating Brain Injury During Head Impact}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {81}, number = {3}, year = {2014}, month = {MAR}, pages = {031014}, issn = {0021-8936}, doi = {10.1115/1.4024992}, author = {Begley, Matthew R. and Zok, Frank W.} } @article { ISI:000344203600035, title = {Shear-dominated plastic behavior of a cross-ply Dyneema (R) composite}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {67}, year = {2014}, month = {DEC}, pages = {316-323}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2014.09.012}, author = {Nazarian, Oshin and Zok, Frank W.} } @inbook { ISI:000348451900018, title = {Stochastic Virtual Tests for High-Temperature Ceramic Matrix Composites}, booktitle = {ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 44}, series = {Annual Review of Materials Research}, volume = {44}, year = {2014}, pages = {479+}, isbn = {978-0-8243-1744-7}, issn = {1531-7331}, doi = {10.1146/annurev-matsci-122013-025024}, author = {Cox, Brian N. and Bale, Hrishikesh A. and Begley, Matthew and Blacklock, Matthew and Do, Bao-Chan and Fast, Tony and Naderi, Mehdi and Novak, Mark and Rajan, Varun P. and Rinaldi, Renaud G. and Ritchie, Robert O. and Rossol, Michael N. and Shaw, John H. and Sudre, Olivier and Yang, Qingda and Zok, FrankW. and Marshall, David B.}, editor = {Clarke, DR} } @article { ISI:000334000100003, title = {Stress distributions in bluntly-notched ceramic composite laminates}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {60}, year = {2014}, month = {MAY}, pages = {15-23}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2014.01.010}, author = {Rajan, Varun P. and Zok, Frank W.} } @article { ISI:000333550500033, title = {Towards Virtual Testing of Textile Composites: Calibration of Thermoelastic Tow Properties}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {97}, number = {4}, year = {2014}, month = {APR}, pages = {1209-1217}, issn = {0002-7820}, doi = {10.1111/jace.12829}, author = {Shaw, John H. and Rajan, Varun P. and Blacklock, Matthew and Zok, Frank W.} } @article { ISI:000321081200042, title = {Ameliorating property gradients in photocured polymer lattices via thermal curing}, journal = {MATERIALS LETTERS}, volume = {105}, year = {2013}, month = {AUG 15}, pages = {155-158}, issn = {0167-577X}, doi = {10.1016/j.matlet.2013.04.048}, author = {Rinaldi, R. G. and Hammetter, C. I. and Zok, F. W.} } @article { ISI:000322965300003, title = {Characterizing Weave Geometry in Textile Ceramic Composites Using Digital Image Correlation}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {96}, number = {8}, year = {2013}, month = {AUG}, pages = {2362-2365}, issn = {0002-7820}, doi = {10.1111/jace.12468}, author = {Rossol, Michael N. and Shaw, John H. and Bale, Hrishikesh and Ritchie, Robert O. and Marshall, David B. and Zok, Frank W.} } @article { ISI:000326207100035, title = {Deformation stabilization of lattice structures via foam addition (vol 60, pg 6476, 2012)}, journal = {ACTA MATERIALIA}, volume = {61}, number = {18}, year = {2013}, month = {OCT}, pages = {7034}, issn = {1359-6454}, doi = {10.1016/j.actamat.2013.08.034}, author = {Ostos, J. Bernal and Rinaldi, R. G. and Hammetter, C. I. and Stucky, G. D. and Zok, F. W. and Jacobsen, A. J.} } @article { ISI:000324899300009, title = {Effect of core topology on projectile penetration in hybrid aluminum/alumina sandwich structures}, journal = {INTERNATIONAL JOURNAL OF IMPACT ENGINEERING}, volume = {62}, year = {2013}, month = {DEC}, pages = {99-113}, issn = {0734-743X}, doi = {10.1016/j.ijimpeng.2013.05.008}, author = {Wadley, H. N. G. and O{\textquoteright}Masta, M. R. and Dharmasena, K. P. and Compton, B. G. and Gamble, E. A. and Zok, F. W.} } @article { ISI:000316677900051, title = {Failure and debonding of thin circular and square tiles (islands) bonded with a compliant interlayer}, journal = {THIN SOLID FILMS}, volume = {531}, year = {2013}, month = {MAR 15}, pages = {332-339}, issn = {0040-6090}, doi = {10.1016/j.tsf.2012.11.136}, author = {Begley, Matthew R. and Zok, Frank and Vermaak, Natasha} } @article { ISI:000316042500002, title = {Failure initiation during impact of metal spheres onto ceramic targets}, journal = {INTERNATIONAL JOURNAL OF IMPACT ENGINEERING}, volume = {55}, year = {2013}, month = {MAY}, pages = {11-23}, issn = {0734-743X}, doi = {10.1016/j.ijimpeng.2012.12.002}, author = {Compton, Brett G. and Gamble, Eleanor A. and Zok, Frank W.} } @article { ISI:000324899300007, title = {Impact resistance of TiC-based cermets}, journal = {INTERNATIONAL JOURNAL OF IMPACT ENGINEERING}, volume = {62}, year = {2013}, month = {DEC}, pages = {75-87}, issn = {0734-743X}, doi = {10.1016/j.ijimpeng.2013.06.008}, author = {Compton, B. G. and Zok, F. W.} } @article { ISI:000317377500006, title = {Impact response of layered steel-alumina targets}, journal = {MECHANICS OF MATERIALS}, volume = {60}, year = {2013}, month = {JUL}, pages = {80-92}, issn = {0167-6636}, doi = {10.1016/j.mechmat.2013.01.008}, author = {Gamble, E. A. and Compton, B. G. and Zok, F. W.} } @article { ISI:000326177600029, title = {Pyramidal Lattice Structures for High Strength and Energy Absorption}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {80}, number = {4}, year = {2013}, month = {JUL}, pages = {041015}, issn = {0021-8936}, doi = {10.1115/1.4007865}, author = {Hammetter, C. I. and Rinaldi, R. G. and Zok, F. W.} } @article { ISI:000324962100010, title = {Remediation of a constitutive model for ceramic composite laminates}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {52}, year = {2013}, month = {SEP}, pages = {80-88}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2013.05.010}, author = {Rajan, Varun P. and Zok, Frank W.} } @article { ISI:000312712000003, title = {DAMAGE DEVELOPMENT IN AN ARMOR ALUMINA IMPACTED WITH DUCTILE METAL SPHERES}, journal = {JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES}, volume = {7}, number = {6}, year = {2012}, month = {JUN}, pages = {575-591}, issn = {1559-3959}, doi = {10.2140/jomms.2012.7.575}, author = {Compton, Brett G. and Gamble, Eleanor A. and Deshpande, Vikram S. and Zok, Frank W.} } @article { ISI:000311188400004, title = {Deformation stabilization of lattice structures via foam addition}, journal = {ACTA MATERIALIA}, volume = {60}, number = {19}, year = {2012}, month = {NOV}, pages = {6476-6485}, issn = {1359-6454}, doi = {10.1016/j.actamat.2012.07.053}, author = {Ostos, J. Bernal and Rinaldi, R. G. and Hammetter, C. M. and Stucky, G. D. and Zok, F. W. and Jacobsen, A. J.} } @article { ISI:000305804800017, title = {Effects of material heterogeneities on the compressive response of thiol-ene pyramidal lattices}, journal = {JOURNAL OF MATERIALS SCIENCE}, volume = {47}, number = {18}, year = {2012}, month = {SEP}, pages = {6621-6632}, issn = {0022-2461}, doi = {10.1007/s10853-012-6598-5}, author = {Rinaldi, R. G. and Bernal-Ostos, J. and Hammetter, C. I. and Jacobsen, A. J. and Zok, F. W.} } @article { ISI:000309296700002, title = {Effects of non-uniform strains on tensile fracture of fiber-reinforced ceramic composites}, journal = {JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS}, volume = {60}, number = {12}, year = {2012}, month = {DEC}, pages = {2003-2018}, issn = {0022-5096}, doi = {10.1016/j.jmps.2012.07.006}, author = {Rajan, Varun P. and Zok, Frank W.} } @article { ISI:000310892100013, title = {Optimization of Digital Image Correlation for High-Resolution Strain Mapping of Ceramic Composites}, journal = {EXPERIMENTAL MECHANICS}, volume = {52}, number = {9}, year = {2012}, month = {NOV}, pages = {1407-1421}, issn = {0014-4851}, doi = {10.1007/s11340-012-9617-1}, author = {Rajan, V. P. and Rossol, M. N. and Zok, F. W.} } @article { ISI:000292209200023, title = {A Constitutive Description of the Inelastic Response of Ceramics}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {94}, number = {1}, year = {2011}, month = {JUN}, pages = {S204-S214}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2011.04516.x}, author = {Deshpande, Vikram S. and Gamble, E. A. Nell and Compton, Brett G. and McMeeking, Robert M. and Evans, Anthony G. and Zok, Frank W.} } @article { ISI:000297941100050, title = {High-temperature materials testing with full-field strain measurement: Experimental design and practice}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {82}, number = {11}, year = {2011}, month = {NOV}, pages = {115101}, issn = {0034-6748}, doi = {10.1063/1.3657835}, author = {Novak, Mark D. and Zok, Frank W.} } @article { ISI:000299678000008, title = {IMPLICATIONS OF SHAKEDOWN FOR DESIGN OF ACTIVELY COOLED THERMOSTRUCTURAL PANELS}, journal = {JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES}, volume = {6}, number = {9}, year = {2011}, month = {NOV-DEC}, pages = {1313-1327}, issn = {1559-3959}, doi = {10.2140/jomms.2011.6.1313}, author = {Vermaak, Natasha and Valdevit, Lorenzo and Evans, Anthony G. and Zok, Frank W. and McMeeking, Robert M.} } @article { ISI:000275156100008, title = {Calibration procedures for a computational model of ductile fracture}, journal = {ENGINEERING FRACTURE MECHANICS}, volume = {77}, number = {3}, year = {2010}, month = {FEB}, pages = {492-509}, issn = {0013-7944}, doi = {10.1016/j.engfracmech.2009.10.007}, author = {Xue, Z. and Pontin, M. G. and Zok, F. W. and Hutchinson, J. W.} } @article { ISI:000273934000006, title = {Treating matrix nonlinearity in the binary model formulation for 3D ceramic composite structures}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {41}, number = {2}, year = {2010}, month = {FEB}, pages = {222-229}, issn = {1359-835X}, doi = {10.1016/j.compositesa.2009.10.020}, author = {Flores, Shane and Evans, Anthony G. and Zok, Frank W. and Genet, Martin and Cox, Brian and Marshall, David and Sudre, Olivier and Yang, Qingda} } @article { ISI:000264145000001, title = {Metals and the Integrity of a Biological Coating: The Cuticle of Mussel Byssus}, journal = {LANGMUIR}, volume = {25}, number = {6}, year = {2009}, month = {MAR 17}, pages = {3323-3326}, issn = {0743-7463}, doi = {10.1021/la8027012}, author = {Holten-Andersen, Niels and Mates, Thomas E. and Toprak, Muhammet S. and Stucky, Galen D. and Zok, Frank W. and Waite, J. Herbert} } @article { ISI:000266012300020, title = {Processing of Oxide Composites with Three-Dimensional Fiber Architectures}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {92}, number = {5}, year = {2009}, month = {MAY}, pages = {1087-1092}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2009.03036.x}, author = {Yang, James Y. and Weaver, Jared H. and Zok, Frank W. and Mack, Julia J.} } @article { ISI:000266442500038, title = {The tissue diagnostic instrument}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {80}, number = {5}, year = {2009}, month = {MAY}, pages = {054303}, issn = {0034-6748}, doi = {10.1063/1.3127602}, author = {Hansma, Paul and Yu, Hongmei and Schultz, David and Rodriguez, Azucena and Yurtsev, Eugene A. and Orr, Jessica and Tang, Simon and Miller, Jon and Wallace, Joseph and Zok, Frank and Li, Cheng and Souza, Richard and Proctor, Alexander and Brimer, Davis and Nogues-Solan, Xavier and Mellbovsky, Leonardo and Pena, M. Jesus and Diez-Ferrer, Oriol and Mathews, Phillip and Randall, Connor and Kuo, Alfred and Chen, Carol and Peters, Mathilde and Kohn, David and Buckley, Jenni and Li, Xiaojuan and Pruitt, Lisa and Diez-Perez, Adolfo and Alliston, Tamara and Weaver, Valerie and Lotz, Jeffrey} } @article { ISI:000261714700028, title = {Control of Interface Properties in Oxide Composites Via Fugitive Coatings}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {91}, number = {12}, year = {2008}, month = {DEC}, pages = {4003-4008}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2008.02746.x}, author = {Weaver, Jared H. and Yang, James and Zok, Frank W.} } @article { ISI:000254420100035, title = {Effects of hydration on mechanical properties of a highly sclerotized tissue}, journal = {BIOPHYSICAL JOURNAL}, volume = {94}, number = {8}, year = {2008}, month = {APR 15}, pages = {3266-3272}, issn = {0006-3495}, doi = {10.1529/biophysj.107.120790}, author = {Moses, Dana N. and Pontin, Michael G. and Waite, J. Herbert and Zok, Frank W.} } @article { ISI:000255695400010, title = {Effects of laminate architecture on fracture resistance of sponge biosilica: Lessons from nature}, journal = {ADVANCED FUNCTIONAL MATERIALS}, volume = {18}, number = {8}, year = {2008}, month = {APR 25}, pages = {1241-1248}, issn = {1616-301X}, doi = {10.1002/adfm.200701135}, author = {Miserez, Ali and Weaver, James C. and Thurner, Philipp J. and Aizenberg, Joanna and Dauphin, Yannicke and Fratzl, Peter and Morse, Daniel E. and Zok, Frank W.} } @article { ISI:000260218700022, title = {A Materials Selection Protocol for Lightweight Actively Cooled Panels}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {75}, number = {6}, year = {2008}, month = {NOV}, pages = {061022}, issn = {0021-8936}, doi = {10.1115/1.2966270}, author = {Valdevit, Lorenzo and Vermaak, Natasha and Zok, Frank W. and Evans, Anthony G.} } @article { ISI:000251857100002, title = {A modified test for measuring the interlaminar tensile strength of fiber-reinforced ceramic composites}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {68}, number = {1}, year = {2008}, month = {JAN}, pages = {10-16}, issn = {0266-3538}, doi = {10.1016/j.compscitech.2007.06.002}, author = {Weaver, Jared H. and Yang, James and Evans, Anthony G. and Zok, Frank W.} } @article { ISI:000261253400049, title = {Role of transition metals in sclerotization of biological tissue}, journal = {ACTA BIOMATERIALIA}, volume = {4}, number = {6}, year = {2008}, month = {NOV}, pages = {2045-2051}, issn = {1742-7061}, doi = {10.1016/j.actbio.2008.06.017}, author = {Broomell, C. C. and Zok, F. W. and Waite, J. H.} } @article { ISI:000260218700021, title = {Scratching of Elastic/Plastic Materials With Hard Spherical Indenters}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {75}, number = {6}, year = {2008}, month = {NOV}, pages = {061021}, issn = {0021-8936}, doi = {10.1115/1.2966268}, author = {Flores, Shane E. and Pontin, Michael G. and Zok, Frank W.} } @article { ISI:000254394000044, title = {The transition from stiff to compliant materials in squid beaks}, journal = {SCIENCE}, volume = {319}, number = {5871}, year = {2008}, month = {MAR 28}, pages = {1816-1819}, issn = {0036-8075}, doi = {10.1126/science.1154117}, author = {Miserez, Ali and Schneberk, Todd and Sun, Chengjun and Zok, Frank W. and Waite, J. Herbert} } @article { ISI:000256438600010, title = {Dynamic shear rupture of steel plates}, journal = {JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES}, volume = {2}, number = {10}, year = {2007}, month = {DEC}, pages = {2049-2066}, issn = {1559-3959}, doi = {10.2140/jomms.2007.2.2049}, author = {Nahshon, Ken and Pontin, Michael G. and Evans, Anthony G. and Hutchinson, John W. and Zok, Frank W.} } @article { ISI:000245533500009, title = {Hierarchical assembly of the siliceous skeletal lattice of the hexactinellid sponge Euplectella aspergillum}, journal = {JOURNAL OF STRUCTURAL BIOLOGY}, volume = {158}, number = {1}, year = {2007}, month = {APR}, pages = {93-106}, issn = {1047-8477}, doi = {10.1016/j.jsb.2006.10.027}, author = {Weaver, James C. and Aizenberg, Joanna and Fantner, Georg E. and Kisailus, David and Woesz, Alexander and Allen, Peter and Fields, Kirk and Porter, Michael J. and Zok, Frank W. and Hansma, Paul K. and Fratzl, Peter and Morse, Daniel E.} } @article { ISI:000243178400016, title = {Jumbo squid beaks: Inspiration for design of robust organic composites}, journal = {ACTA BIOMATERIALIA}, volume = {3}, number = {1}, year = {2007}, month = {JAN}, pages = {139-149}, issn = {1742-7061}, doi = {10.1016/j.actbio.2006.09.004}, author = {Miserez, Ali and Li, Youli and Waite, J. Herbert and Zok, Frank} } @article { ISI:000245675300057, title = {A method for coating fibers in oxide composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {90}, number = {4}, year = {2007}, month = {APR}, pages = {1331-1333}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2007.01527.x}, author = {Weaver, Jared H. and Yang, James and Levi, Carlos G. and Zok, Frank W. and Davis, Janet B.} } @article { ISI:000243382600002, title = {Mineral minimization in nature{\textquoteright}s alternative teeth}, journal = {JOURNAL OF THE ROYAL SOCIETY INTERFACE}, volume = {4}, number = {12}, year = {2007}, month = {FEB 22}, pages = {19-31}, issn = {1742-5689}, doi = {10.1098/rsif.2006.0153}, author = {Broomell, Christopher C. and Khan, Rashda K. and Moses, Dana N. and Miserez, Ali and Pontin, Michael G. and Stucky, Galen D. and Zok, Frank W. and Waite, J. Herbert} } @article { ISI:000249064700007, title = {A nonmineralized approach to abrasionresistant biomaterials}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, volume = {104}, number = {34}, year = {2007}, month = {AUG 21}, pages = {13559-13564}, issn = {0027-8424}, doi = {10.1073/pnas.0702034104}, author = {Pontin, Michael G. and Moses, Dana N. and Waite, J. Herbert and Zok, Frank W.} } @article { ISI:000250888800035, title = {Property maps for abrasion resistance of materials}, journal = {ACTA MATERIALIA}, volume = {55}, number = {18}, year = {2007}, month = {OCT}, pages = {6365-6371}, issn = {1359-6454}, doi = {10.1016/j.actamat.2007.07.042}, author = {Zok, F. W. and Miserez, A.} } @article { ISI:000249236200021, title = {Protective coatings on extensible biofibres}, journal = {NATURE MATERIALS}, volume = {6}, number = {9}, year = {2007}, month = {SEP}, pages = {669-672}, issn = {1476-1122}, doi = {10.1038/nmat1956}, author = {Holten-Andersen, Niels and Fantner, Georg E. and Hohlbauch, Sophia and Waite, J. Herbert and Zok, Frank W.} } @article { ISI:000239641300021, title = {Critical role of zinc in hardening of Nereis jaws}, journal = {JOURNAL OF EXPERIMENTAL BIOLOGY}, volume = {209}, number = {16}, year = {2006}, month = {AUG 15}, pages = {3219-3225}, issn = {0022-0949}, doi = {10.1242/jeb.02373}, author = {Broomell, Chris C. and Mattoni, Mike A. and Zok, Frank W. and Waite, J. Herbert} } @article { ISI:000236526300009, title = {Design of sandwich panels with prismatic cores}, journal = {JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME}, volume = {128}, number = {2}, year = {2006}, month = {APR}, pages = {186-192}, issn = {0094-4289}, doi = {10.1115/1.2172279}, author = {Wei, Z and Zok, FW and Evans, AG} } @article { ISI:000241408600001, title = {Developments in oxide fiber composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {89}, number = {11}, year = {2006}, month = {NOV}, pages = {3309-3324}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2006.01342.x}, author = {Zok, Frank W.} } @article { ISI:000207728800003, title = {DYNAMIC BUCKLING OF IMPULSIVELY LOADED PRISMATIC CORES}, journal = {JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES}, volume = {1}, number = {8}, year = {2006}, month = {OCT}, pages = {1345-1365}, issn = {1559-3959}, doi = {10.2140/jomms.2006.1.1345}, author = {Ferri, Enrico and Antinucci, Emilio and He, Ming Y. and Hutchinson, John W. and Zok, Frank W. and Evans, Anthony G.} } @article { ISI:000240384100015, title = {Halogenated veneers: Protein cross-linking and halogenation in the jaws of Nereis, a marine polychaete worm}, journal = {CHEMBIOCHEM}, volume = {7}, number = {9}, year = {2006}, month = {SEP}, pages = {1392-1399}, issn = {1439-4227}, doi = {10.1002/cbic.200600160}, author = {Birkedal, Henrik and Khan, Rashda K. and Slack, Nelle and Broomell, Chris and Lichtenegger, Helga C. and Zok, Frank and Stucky, Galen D. and Waite, J. Herbert} } @article { ISI:000239863100029, title = {Interface properties in a porous-matrix oxide composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {89}, number = {9}, year = {2006}, month = {SEP}, pages = {2869-2873}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2006.01162.x}, author = {Weaver, Jared H. and Rannou, Johann and Mattoni, Michael A. and Zok, Frank W.} } @article { ISI:000235570000022, title = {Performance of metallic honeycomb-core sandwich beams under shock loading}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {43}, number = {6}, year = {2006}, month = {MAR}, pages = {1746-1763}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2005.06.079}, author = {Rathbun, HJ and Radford, DD and Xue, Z and He, MY and Yang, J and Deshpande, V and Fleck, NA and Hutchinson, JW and Zok, FW and Evans, AG} } @article { ISI:000240257600006, title = {Role of melanin in mechanical properties of Glycera jaws}, journal = {ACTA BIOMATERIALIA}, volume = {2}, number = {5}, year = {2006}, month = {SEP}, pages = {521-530}, issn = {1742-7061}, doi = {10.1016/j.actbio.2006.05.002}, author = {Moses, D. N. and Mattoni, M. A. and Slack, N. L. and Waite, J. H. and Zok, F. W.} } @article { ISI:000242779300018, title = {Structural performance of metallic sandwich beams with hollow truss cores}, journal = {ACTA MATERIALIA}, volume = {54}, number = {20}, year = {2006}, month = {DEC}, pages = {5509-5518}, issn = {1359-6454}, doi = {10.1016/j.actamat.2006.07.016}, author = {Rathbun, H. J. and Zok, F. W. and Waltner, S. A. and Mercer, C. and Evans, A. G. and Queheillalt, D. T. and Wadley, H. N. G.} } @article { ISI:000238876800014, title = {Structural performance of near-optimal sandwich panels with corrugated cores}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {43}, number = {16}, year = {2006}, month = {AUG}, pages = {4888-4905}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2005.06.073}, author = {Valdevit, L. and Wei, Z. and Mercer, C. and Zok, F. W. and Evans, A. G.} } @article { ISI:000227510200020, title = {Controlling mechanical properties of porous mullite/alumina mixtures via precursor-derived alumina}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {88}, number = {2}, year = {2005}, month = {FEB}, pages = {367-375}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2005.00061.x}, author = {Fujita, H and Levi, CG and Zok, FW and Jefferson, G} } @article { ISI:000228302400007, title = {Effects of combustor rig exposure on a porous-matrix oxide composite}, journal = {INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY}, volume = {2}, number = {2}, year = {2005}, pages = {133-140}, issn = {1546-542X}, doi = {10.1111/j.1744-7402.2005.02015.x}, author = {Mattoni, MA and Yang, JY and Levi, CG and Zok, FW and Zawada, LP} } @article { ISI:000229410300024, title = {Strength and notch sensitivity of porous-matrix oxide composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {88}, number = {6}, year = {2005}, month = {JUN}, pages = {1504-1513}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2005.00299.x}, author = {Mattoni, MA and Zok, FW} } @article { ISI:000228239600015, title = {Strength of joints produced by transient liquid phase bonding in the Cu-Sn system}, journal = {ACTA MATERIALIA}, volume = {53}, number = {7}, year = {2005}, month = {APR}, pages = {2019-2027}, issn = {1359-6454}, doi = {10.1016/j.actamat.2005.01.013}, author = {Bosco, NS and Zok, FW} } @article { ISI:000233060700007, title = {Strength optimization of metallic sandwich panels subject to bending}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {42}, number = {26}, year = {2005}, month = {DEC}, pages = {6643-6661}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2005.06.044}, author = {Rathbun, HJ and Zok, FW and Evans, AG} } @article { ISI:000232195300015, title = {Structural performance of metallic sandwich panels with square honeycomb cores}, journal = {PHILOSOPHICAL MAGAZINE}, volume = {85}, number = {26-27}, year = {2005}, note = {Embury Symposium, McMaster Univ, Hamilton, CANADA, JUN, 2004}, month = {SEP}, pages = {3207-3234}, issn = {1478-6435}, doi = {10.1080/14786430500073945}, author = {Zok, FW and Rathbun, H and He, M and Ferri, E and Mercer, C and McMeeking, RM and Evans, AG} } @article { ISI:000222122500012, title = {Critical interlayer thickness for transient liquid phase bonding in the Cu-Sn system}, journal = {ACTA MATERIALIA}, volume = {52}, number = {10}, year = {2004}, month = {JUN 7}, pages = {2965-2972}, issn = {1359-6454}, doi = {10.1016/j.actamat.2004.02.043}, author = {Bosco, NS and Zok, FW} } @article { ISI:000222231700012, title = {Damage accumulation and mechanical properties of particle-reinforced metal-matrix composites during hydrostatic extrusion}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {64}, number = {10-11}, year = {2004}, month = {AUG}, pages = {1539-1549}, issn = {0266-3538}, doi = {10.1016/j.compscitech.2003.11.006}, author = {Lahaie, DJ and Embury, JD and Zok, FW} } @article { ISI:000187341900025, title = {Effective conductivity of partially sintered solids}, journal = {JOURNAL OF APPLIED PHYSICS}, volume = {95}, number = {1}, year = {2004}, month = {JAN 1}, pages = {156-160}, issn = {0021-8979}, doi = {10.1063/1.1630360}, author = {Dryden, JR and Zok, FW} } @article { ISI:000222534000009, title = {Measurement and simulation of the performance of a lightweight metallic sandwich structure with a tetrahedral truss core}, journal = {JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME}, volume = {71}, number = {3}, year = {2004}, month = {MAY}, pages = {368-374}, issn = {0021-8936}, doi = {10.1115/1.1757487}, author = {Rathbun, HJ and Wei, Z and He, MY and Zok, FW and Evans, AG and Sypeck, DJ and Wadley, HNG} } @article { ISI:000189158500014, title = {Mullite/alumina mixtures for use as porous matrices in oxide fiber composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {87}, number = {2}, year = {2004}, month = {FEB}, pages = {261-267}, issn = {0002-7820}, doi = {10.1111/j.1551-2916.2004.00261.x}, author = {Fujita, H and Jefferson, G and McMeeking, RM and Zok, FW} } @article { ISI:000221808100024, title = {Notch sensitivity of ceramic composites with rising fracture resistance}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {87}, number = {5}, year = {2004}, month = {MAY}, pages = {914-922}, issn = {0002-7820}, author = {Mattoni, MA and Zok, FW} } @article { ISI:000224136100013, title = {A protocol for characterizing the structural performance of metallic sandwich panels: application to pyramidal truss cores}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {41}, number = {22-23}, year = {2004}, month = {NOV}, pages = {6249-6271}, issn = {0020-7683}, doi = {10.1016/j.ijsolstr.2004.05.045}, author = {Zok, FW and Waltner, SA and Wei, Z and Rathbun, HJ and McMeeking, RM and Evans, AG} } @article { ISI:000185219300011, title = {Design of metallic textile core sandwich panels}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {40}, number = {21}, year = {2003}, month = {OCT}, pages = {5707-5722}, issn = {0020-7683}, doi = {10.1016/S0020-7683(03)00375-5}, author = {Zok, FW and Rathbun, HJ and Wei, Z and Evans, AG} } @article { ISI:000183752500006, title = {A method for determining the stress intensity factor of a single edge-notched tensile specimen}, journal = {INTERNATIONAL JOURNAL OF FRACTURE}, volume = {119}, number = {1}, year = {2003}, month = {JAN}, pages = {L3-L8}, issn = {0376-9429}, author = {Mattoni, MA and Zok, FW} } @article { ISI:000176600000075, title = {Effect of cracks on the thermal resistance of aligned fiber composites}, journal = {JOURNAL OF APPLIED PHYSICS}, volume = {92}, number = {2}, year = {2002}, month = {JUL 15}, pages = {1137-1142}, issn = {0021-8979}, doi = {10.1063/1.1486052}, author = {Dryden, J and Deakin, A and Zok, F} } @article { ISI:000174409800013, title = {Effects of thermal aging on the mechanical properties of a porous-matrix ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {85}, number = {3}, year = {2002}, month = {MAR}, pages = {595-602}, issn = {0002-7820}, author = {Carelli, EAV and Fujita, H and Yang, JY and Zok, FW} } @article { ISI:000175962200006, title = {Thermal expansion of unidirectional and cross-ply fibrous monoliths}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {62}, number = {7-8}, year = {2002}, pages = {PII S0266-3538(02)00033-7}, issn = {0266-3538}, doi = {10.1016/S0266-3538(02)00033-7}, author = {He, MY and Singh, D and McNulty, JC and Zok, FW} } @article { ISI:000170962600015, title = {Effects of matrix cracks on the thermal diffusivity of a fiber-reinforced ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {84}, number = {9}, year = {2001}, month = {SEP}, pages = {2015-2021}, issn = {0002-7820}, author = {McDonald, KR and Dryden, JR and Zok, FW} } @article { ISI:000172137000024, title = {Effects of matrix porosity on the mechanical properties of a porous-matrix, all-oxide ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {84}, number = {11}, year = {2001}, month = {NOV}, pages = {2594-2602}, issn = {0002-7820}, author = {Mattoni, MA and Yang, JY and Levi, CG and Zok, FW} } @article { ISI:000166972500018, title = {In-plane fracture resistance of a crossply fibrous monolith}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {84}, number = {2}, year = {2001}, month = {FEB}, pages = {367-375}, issn = {0002-7820}, author = {McNulty, JC and Begley, MR and Zok, FW} } @article { ISI:000166924600009, title = {Mechanical properties of porous-matrix ceramic composites}, journal = {ADVANCED ENGINEERING MATERIALS}, volume = {3}, number = {1-2}, year = {2001}, month = {JAN}, pages = {15-23}, issn = {1438-1656}, doi = {10.1002/1527-2648(200101)3:1/2<15::AID-ADEM15>3.3.CO;2-1}, author = {Zok, FW and Levi, CG} } @article { ISI:000169998800013, title = {Notch sensitivity of fatigue life in a Sylramic (TM)/SiC composite at elevated temperature}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {61}, number = {9}, year = {2001}, month = {JUL}, pages = {1331-1338}, issn = {0266-3538}, doi = {10.1016/S0266-3538(01)00032-X}, author = {McNulty, JC and He, MY and Zok, FW} } @article { ISI:000170810100005, title = {Thermal phase lag in a solid containing periodic planar cracks}, journal = {INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER}, volume = {44}, number = {21}, year = {2001}, month = {NOV}, pages = {4035-4046}, issn = {0017-9310}, doi = {10.1016/S0017-9310(01)00049-7}, author = {Dryden, JR and Zok, F} } @article { ISI:000167828500058, title = {Thermal resistance of bridged cracks in fiber-reinforced ceramic composites}, journal = {JOURNAL OF APPLIED PHYSICS}, volume = {89}, number = {8}, year = {2001}, month = {APR 15}, pages = {4599-4611}, issn = {0021-8979}, doi = {10.1063/1.1354648}, author = {Dryden, J and Zok, F} } @article { ISI:000085562700013, title = {The energy absorption potential of chain composites}, journal = {ACTA MATERIALIA}, volume = {48}, number = {3}, year = {2000}, month = {FEB 9}, pages = {755+}, issn = {1359-6454}, doi = {10.1016/S1359-6454(99)00344-4}, author = {Cox, BN and Sridhar, N and Davis, JB and Gong, XY and Zok, FW} } @article { ISI:000085562700012, title = {The mechanics of delocalization and energy absorption in chain composites}, journal = {ACTA MATERIALIA}, volume = {48}, number = {3}, year = {2000}, month = {FEB 9}, pages = {745-753}, issn = {1359-6454}, doi = {10.1016/S1359-6454(99)00343-2}, author = {Gong, XY and Zok, FW and Cox, BN and Davis, J} } @article { ISI:000168583500003, title = {A photothermal technique for the determination of the thermal conductance of interfaces and cracks}, journal = {JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME}, volume = {122}, number = {1}, year = {2000}, month = {FEB}, pages = {10-14}, issn = {0022-1481}, doi = {10.1115/1.521430}, author = {McDonald, KR and Dryden, JR and Majumdar, A and Zok, FW} } @article { ISI:000086235400013, title = {Thermal conductance of delamination cracks in a fiber-reinforced ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {83}, number = {3}, year = {2000}, month = {MAR}, pages = {553-562}, issn = {0002-7820}, author = {McDonald, KR and Dryden, JR and Majumdar, A and Zok, FW} } @article { ISI:000085763700024, title = {In-plane mechanical properties of an all-oxide ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {82}, number = {10}, year = {1999}, month = {OCT}, pages = {2721-2730}, issn = {0002-7820}, author = {Heathcote, JA and Gong, XY and Yang, JY and Ramamurty, U and Zok, FW} } @article { ISI:000081770900015, title = {Low-cycle fatigue of Nicalon (TM)-fiber-reinforced ceramic composites}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {59}, number = {10}, year = {1999}, pages = {1597-1607}, issn = {0266-3538}, doi = {10.1016/S0266-3538(99)00019-6}, author = {McNulty, JC and Zok, FW} } @article { ISI:000081722400009, title = {The mechanical response of ceramic microballoon reinforced aluminum matrix composites under compressive loading}, journal = {ACTA MATERIALIA}, volume = {47}, number = {9}, year = {1999}, month = {JUL 9}, pages = {2685-2694}, issn = {1359-6454}, doi = {10.1016/S1359-6454(99)00129-9}, author = {Kiser, M and He, MY and Zok, FW} } @article { ISI:000084479300013, title = {Microstructural design of stable porous matrices for all-oxide ceramic composites}, journal = {ZEITSCHRIFT FUR METALLKUNDE}, volume = {90}, number = {12}, year = {1999}, month = {DEC}, pages = {1037-1047}, issn = {0044-3093}, author = {Levi, CG and Zok, FW and Yang, JY and Mattoni, M and Lofvander, JPA} } @article { ISI:000080447900017, title = {Notch-sensitivity of fiber-reinforced ceramic-matrix composites: Effects of inelastic straining and volume-dependent strength}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {82}, number = {5}, year = {1999}, month = {MAY}, pages = {1217-1228}, issn = {0002-7820}, author = {McNulty, JC and Zok, FW and Genin, GM and Evans, AG} } @article { ISI:000084003000022, title = {Optical measurement of thermal contact conductance between wafer-like thin solid samples}, journal = {JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME}, volume = {121}, number = {4}, year = {1999}, month = {NOV}, pages = {954-963}, issn = {0022-1481}, doi = {10.1115/1.2826086}, author = {Ohsone, Y and Wu, G and Dryden, J and Zok, F and Majumdar, A} } @article { ISI:000079219400003, title = {Recent advances in oxide-oxide composite technology}, journal = {ADVANCED COMPOSITE MATERIALS}, volume = {8}, number = {1}, year = {1999}, pages = {17-23}, issn = {0924-3046}, doi = {10.1163/156855199X00038}, author = {Evans, AG and Marshall, DB and Zok, F and Levi, C} } @article { ISI:000077085300003, title = {Experimental assessment of fatigue life and failure modes in a SiCc/Ti composite}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {58}, number = {10}, year = {1998}, pages = {1583-1591}, issn = {0266-3538}, doi = {10.1016/S0266-3538(97)00218-2}, author = {Steyer, TE and Zok, FW and Walls, DP} } @article { ISI:000073740700007, title = {Limit stress conditions for weakly bonded fiber composites subject to transverse biaxial tensile loading}, journal = {INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES}, volume = {35}, number = {21}, year = {1998}, month = {JUL}, pages = {2821-2842}, issn = {0020-7683}, doi = {10.1016/S0020-7683(97)00279-5}, author = {Du, ZZ and Zok, FW} } @article { ISI:000075368600011, title = {Processing and performance of an all-oxide ceramic composite}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {81}, number = {8}, year = {1998}, month = {AUG}, pages = {2077-2086}, issn = {0002-7820}, author = {Levi, CG and Yang, JY and Dalgleish, BJ and Zok, FW and Evans, AG} } @article { ISI:000075368600019, title = {Stress rupture of an enhanced nicalon/silicon carbide composite at intermediate temperatures}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {81}, number = {8}, year = {1998}, month = {AUG}, pages = {2140-2146}, issn = {0002-7820}, author = {Steyer, TE and Zok, FW and Walls, DP} } @article { ISI:A1997XF13000026, title = {Application of weakest-link fracture statistics to fiber-reinforced ceramic-matrix composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {80}, number = {6}, year = {1997}, month = {JUN}, pages = {1535-1543}, issn = {0002-7820}, author = {McNulty, JC and Zok, FW} } @article { ISI:000071152200008, title = {Delamination resistance of two hybrid ceramic-composite laminates}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {80}, number = {12}, year = {1997}, month = {DEC}, pages = {3029-3037}, issn = {0002-7820}, author = {Cutler, WA and Zok, FW and Lange, FF and Charalambides, PG} } @article { ISI:000071234700003, title = {Effect of notch root radius on the initiation toughness of a C-fiber/SiC-matrix composite}, journal = {SCRIPTA MATERIALIA}, volume = {38}, number = {1}, year = {1997}, month = {DEC 18}, pages = {15-19}, issn = {1359-6462}, doi = {10.1016/S1359-6462(97)00450-8}, author = {Shen, JU and Hirth, JP and Zok, FW and Heathcote, JA} } @article { ISI:A1997YC24900002, title = {Inelastic deformation of fiber composites containing bridged cracks}, journal = {MECHANICS OF MATERIALS}, volume = {26}, number = {2}, year = {1997}, month = {SEP}, pages = {81-92}, issn = {0167-6636}, doi = {10.1016/S0167-6636(97)00021-5}, author = {Zok, FW and Begley, MR and Steyer, TE and Walls, DP} } @article { ISI:A1997YJ67000033, title = {Measurement of the cyclic bridging law in a titanium matrix composite and its application to simulating crack growth}, journal = {ACTA MATERIALIA}, volume = {45}, number = {12}, year = {1997}, month = {DEC}, pages = {5203-5211}, issn = {1359-6454}, doi = {10.1016/S1359-6454(97)00146-8}, author = {Connell, SJ and Zok, FW} } @article { ISI:000071486400030, title = {Role of cladding in the notched tensile properties of a titanium matrix composite}, journal = {METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE}, volume = {28}, number = {12}, year = {1997}, month = {DEC}, pages = {2731-2740}, issn = {1073-5623}, doi = {10.1007/s11661-997-0030-9}, author = {Ramamurty, U and Zok, FW and Leckie, FA} } @article { ISI:A1997YE50400018, title = {Strength variability in alumina fiber-reinforced aluminum matrix composites}, journal = {ACTA MATERIALIA}, volume = {45}, number = {11}, year = {1997}, month = {NOV}, pages = {4603-4613}, issn = {1359-6454}, doi = {10.1016/S1359-6454(97)00133-X}, author = {Ramamurty, U and Zok, FW and Leckie, FA and Deve, HE} } @article { ISI:A1997WW33400001, title = {Strength-limited design of composite/monolith transitions in metallic structures}, journal = {COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING}, volume = {28}, number = {5}, year = {1997}, pages = {399-407}, issn = {1359-835X}, doi = {10.1016/S1359-835X(96)00139-X}, author = {Zok, FW and He, MY and Evans, AG and Leckie, FA and Deve, HE} } @article { ISI:A1996VV09500009, title = {Advances in ceramic composites reinforced by continuous fibers}, journal = {CURRENT OPINION IN SOLID STATE \& MATERIALS SCIENCE}, volume = {1}, number = {5}, year = {1996}, month = {OCT}, pages = {666-673}, issn = {1359-0286}, doi = {10.1016/S1359-0286(96)80049-0}, author = {Cox, BN and Zok, FW} } @article { ISI:A1996VV31900001, title = {The effects of a single mode III loading cycle on mode I crack initiation and growth toughnesses in a cross-ply [90 degrees/0 degrees](2s) Ti-6Al-4V/SiCf composite}, journal = {JOURNAL OF COMPOSITE MATERIALS}, volume = {30}, number = {17}, year = {1996}, pages = {1858-1872}, issn = {0021-9983}, author = {Kamat, SV and Hirth, JP and Zok, FW} } @article { ISI:A1996VH12900007, title = {Effects of cladding on the tensile properties of titanium matrix composites}, journal = {MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, volume = {214}, number = {1-2}, year = {1996}, month = {AUG 30}, pages = {62-67}, issn = {0921-5093}, doi = {10.1016/0921-5093(96)10249-5}, author = {Ramamurty, U and Zok, FW and Leckie, FA} } @article { ISI:A1996UF04600010, title = {Effects of notch root radius on crack initiation and growth toughnesses of a cross-ply Ti-6Al-4V/SiC composite}, journal = {ACTA MATERIALIA}, volume = {44}, number = {5}, year = {1996}, month = {MAY}, pages = {1831-1838}, issn = {1359-6454}, doi = {10.1016/1359-6454(95)00323-1}, author = {Kamat, SV and Hirth, JP and Zok, FW} } @article { ISI:A1996TY67900026, title = {High temperature deformation and fracture of a fiber reinforced titanium matrix composite}, journal = {ACTA MATERIALIA}, volume = {44}, number = {2}, year = {1996}, month = {FEB}, pages = {683-695}, issn = {1359-6454}, doi = {10.1016/1359-6454(95)00208-1}, author = {Weber, CH and Du, ZZ and Zok, FW} } @article { ISI:A1996VA64000003, title = {Influence of thermal expansion mismatch on residual stresses and flow response of microballoon composites}, journal = {MECHANICS OF MATERIALS}, volume = {23}, number = {2}, year = {1996}, month = {JUN}, pages = {133-146}, issn = {0167-6636}, doi = {10.1016/0167-6636(96)00007-5}, author = {He, MY and Kiser, M and Wu, B and Zok, FW} } @article { ISI:A1996UY84100013, title = {Mechanical behavior of several hybrid ceramic-matrix-composite laminates}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {79}, number = {7}, year = {1996}, month = {JUL}, pages = {1825-1833}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1996.tb08002.x}, author = {Cutler, WA and Zok, FW and Lange, FF} } @article { ISI:A1996UY53900033, title = {A method for measuring residual strains in fiber-reinforced titanium matrix composites}, journal = {ACTA MATERIALIA}, volume = {44}, number = {8}, year = {1996}, month = {AUG}, pages = {3397-3406}, issn = {1359-6454}, doi = {10.1016/1359-6454(95)00407-6}, author = {Ramamurty, U and Dary, FC and Zok, FW} } @article { ISI:A1996VJ72700016, title = {Models of high-temperature, environmentally assisted embrittlement in ceramic-matrix composites}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {79}, number = {9}, year = {1996}, month = {SEP}, pages = {2345-2352}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1996.tb08982.x}, author = {Evans, AG and Zok, FW and McMeeking, RM and Du, ZZ} } @article { ISI:A1996UZ59000018, title = {Multiple matrix cracking in a fiber-reinforced titanium matrix composite under high-cycle fatigue}, journal = {METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE}, volume = {27}, number = {7}, year = {1996}, month = {JUL}, pages = {1899-1907}, issn = {1073-5623}, doi = {10.1007/BF02651939}, author = {Walls, DP and McNulty, JC and Zok, FW} } @article { ISI:A1996VD01600003, title = {Plastic flow and fracture of a particulate metal matrix composite}, journal = {ACTA MATERIALIA}, volume = {44}, number = {9}, year = {1996}, month = {SEP}, pages = {3465-3476}, issn = {1359-6454}, doi = {10.1016/1359-6454(96)00028-6}, author = {Kiser, MT and Zok, FW and Wilkinson, DS} } @article { ISI:A1995TA28700012, title = {ON THE DEVELOPMENT OF FATIGUE FAILURE MAPS FOR TITANIUM MATRIX COMPOSITES}, journal = {MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, volume = {200}, number = {1-2}, year = {1995}, note = {TMS/ASM Symposium on Mechanisms and Mechanics of MMC Fatigue, CHICAGO, IL, OCT 02-06, 1994}, month = {SEP}, pages = {103-113}, issn = {0921-5093}, doi = {10.1016/0921-5093(95)07008-7}, author = {Zok, FW and Du, ZZ and Connell, SJ} } @article { ISI:A1995RE45600004, title = {ON THE MECHANICS OF MICROBALLOON-REINFORCED METAL-MATRIX COMPOSITES}, journal = {MECHANICS OF MATERIALS}, volume = {20}, number = {4}, year = {1995}, month = {JUN}, pages = {315-328}, issn = {0167-6636}, doi = {10.1016/0167-6636(94)00066-2}, author = {He, MY and Wu, B and Zok, FW} } @article { ISI:A1995QK38900001, title = {OVERVIEW NO-118 - FATIGUE OF CERAMIC-MATRIX COMPOSITES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {43}, number = {3}, year = {1995}, month = {MAR}, pages = {859-875}, issn = {0956-7151}, doi = {10.1016/0956-7151(94)00304-Z}, author = {Evans, AG and Zok, FW and McMeeking, RM} } @article { ISI:A1995TJ78900012, title = {OXIDATION EMBRITTLEMENT PROBE FOR CERAMIC-MATRIX COMPOSITES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {78}, number = {8}, year = {1995}, month = {AUG}, pages = {2097-2100}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1995.tb08621.x}, author = {HEREDIA, FE and McNulty, JC and Zok, FW and Evans, AG} } @article { ISI:A1995QB80700002, title = {ON THE ROLE OF PARTICLE CRACKING IN FLOW AND FRACTURE OF METAL-MATRIX COMPOSITES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {43}, number = {1}, year = {1995}, month = {JAN}, pages = {11-20}, issn = {0956-7151}, doi = {10.1016/0956-7151(95)90256-2}, author = {BROCKENBROUGH, JR and Zok, FW} } @article { ISI:A1995RJ68000040, title = {TENSILE-STRENGTH OF SIC FIBERS}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {78}, number = {7}, year = {1995}, month = {JUL}, pages = {1965-1968}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1995.tb08919.x}, author = {Zok, FW and CHEN, XY and Weber, CH} } @article { ISI:A1994NX37400006, title = {ENVIRONMENTAL FATIGUE-CRACK GROWTH IN SPHERULITIC POLYETHYLENE}, journal = {JOURNAL OF MATERIALS SCIENCE LETTERS}, volume = {13}, number = {13}, year = {1994}, month = {JUL 1}, pages = {940-943}, issn = {0261-8028}, doi = {10.1007/BF00701431}, author = {Zok, F and SHINOZAKI, DM} } @article { ISI:A1994NB05500011, title = {FLEXURAL PROPERTIES OF BRITTLE MULTILAYER MATERIALS .1. MODELING}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {77}, number = {3}, year = {1994}, month = {MAR}, pages = {689-696}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1994.tb05350.x}, author = {FOLSOM, CA and Zok, FW and Lange, FF} } @article { ISI:A1994PC50900013, title = {FLEXURAL PROPERTIES OF BRITTLE MULTILAYER MATERIALS .2. EXPERIMENTS}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {77}, number = {8}, year = {1994}, month = {AUG}, pages = {2081-2087}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1994.tb07100.x}, author = {FOLSOM, CA and Zok, FW and Lange, FF} } @article { ISI:A1994MW12100030, title = {INFLUENCE OF INTERPARTICLE FORCES ON THE RHEOLOGICAL BEHAVIOR OF PRESSURE-CONSOLIDATED ALUMINA PARTICLE SLURRIES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {77}, number = {1}, year = {1994}, month = {JAN}, pages = {216-220}, issn = {0002-7820}, author = {VELAMAKANNI, BV and Lange, FF and Zok, FW and PEARSON, DS} } @article { ISI:A1994NY10300011, title = {INTERFACIAL FATIGUE IN A FIBER-REINFORCED METAL-MATRIX COMPOSITE}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {42}, number = {8}, year = {1994}, month = {AUG}, pages = {2675-2681}, issn = {0956-7151}, doi = {10.1016/0956-7151(94)90208-9}, author = {Walls, DP and Zok, FW} } @inbook { ISI:A1994BE38H00003, title = {The physics and mechanics of brittle matrix composites}, booktitle = {SOLID STATE PHYSICS - ADVANCES IN RESEARCH AND APPLICATIONS, VOL 47}, series = {SOLID STATE PHYSICS-ADVANCES IN RESEARCH AND APPLICATIONS}, volume = {47}, year = {1994}, pages = {177-286}, doi = {10.1016/S0081-1947(08)60640-2}, author = {Evans, AG and Zok, FW} } @article { ISI:A1994PB78200001, title = {THE PHYSICS AND MECHANICS OF FIBER-REINFORCED BRITTLE-MATRIX COMPOSITES}, journal = {JOURNAL OF MATERIALS SCIENCE}, volume = {29}, number = {15}, year = {1994}, month = {AUG 1}, pages = {3857-3896}, issn = {0022-2461}, doi = {10.1007/BF00355946}, author = {Evans, AG and Zok, FW} } @article { ISI:A1994MW70100037, title = {STRESS-CORROSION CRACKING IN A UNIDIRECTIONAL CERAMIC-MATRIX COMPOSITE}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {77}, number = {2}, year = {1994}, month = {FEB}, pages = {562-570}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1994.tb07030.x}, author = {SPEARING, SM and Zok, FW and Evans, AG} } @article { ISI:A1994PF50500021, title = {ON THE TENSILE PROPERTIES OF A FIBER-REINFORCED TITANIUM MATRIX COMPOSITE .1. UNNOTCHED BEHAVIOR}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {42}, number = {10}, year = {1994}, month = {OCT}, pages = {3443-3450}, issn = {0956-7151}, doi = {10.1016/0956-7151(94)90477-4}, author = {Weber, CH and CHEN, X and Connell, SJ and Zok, FW} } @article { ISI:A1994PF50500022, title = {ON THE TENSILE PROPERTIES OF A FIBER-REINFORCED TITANIUM MATRIX COMPOSITE .2. INFLUENCE OF NOTCHES AND HOLES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {42}, number = {10}, year = {1994}, month = {OCT}, pages = {3451-3461}, issn = {0956-7151}, doi = {10.1016/0956-7151(94)90478-2}, author = {Connell, SJ and Zok, FW and Du, ZZ and SUO, Z} } @article { ISI:A1993LZ28500053, title = {FIBER-REINFORCED DIAMOND MATRIX COMPOSITES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {76}, number = {5}, year = {1993}, month = {MAY}, pages = {1387-1389}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1993.tb03774.x}, author = {DRORY, MD and MCCLELLAND, RJ and Zok, FW and HEREDIA, FE} } @article { ISI:A1993LE27700019, title = {FRACTURE-RESISTANCE CHARACTERISTICS OF A METAL-TOUGHENED CERAMIC}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {76}, number = {2}, year = {1993}, month = {FEB}, pages = {369-375}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1993.tb03794.x}, author = {FLINN, BD and LO, CS and Zok, FW and Evans, AG} } @article { ISI:A1993LG38200012, title = {MODE-I FATIGUE CRACKING IN A FIBER-REINFORCED METAL-MATRIX COMPOSITE}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {41}, number = {7}, year = {1993}, month = {JUL}, pages = {2061-2071}, issn = {0956-7151}, doi = {10.1016/0956-7151(93)90375-3}, author = {Walls, DP and BAO, G and Zok, FW} } @article { ISI:A1993LN81900014, title = {STOCHASTIC ASPECTS OF MATRIX CRACKING IN BRITTLE-MATRIX COMPOSITES}, journal = {JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME}, volume = {115}, number = {3}, year = {1993}, note = {INTERNATIONAL SYMP ON MICROMECHANICS OF CERAMICS AND CERAMIC COMPOSITES / 1992 ANNUAL MEETING OF THE AMERICAN SOC OF MECHANICAL ENGINEERS, ANAHEIM, CA, NOV 08-13, 1992}, month = {JUL}, pages = {314-318}, issn = {0094-4289}, doi = {10.1115/1.2904224}, author = {SPEARING, SM and Zok, FW} } @article { ISI:A1993MD08000017, title = {ON THE STRENGTH OF DUCTILE PARTICLE-REINFORCED BRITTLE-MATRIX COMPOSITES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {41}, number = {12}, year = {1993}, month = {DEC}, pages = {3515-3524}, issn = {0956-7151}, doi = {10.1016/0956-7151(93)90231-G}, author = {BAO, G and Zok, F} } @article { ISI:A1992JT35100015, title = {DAMAGE AND FAILURE IN UNIDIRECTIONAL CERAMIC-MATRIX COMPOSITES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {75}, number = {10}, year = {1992}, month = {OCT}, pages = {2719-2725}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1992.tb05495.x}, author = {BEYERLE, DS and SPEARING, SM and Zok, FW and Evans, AG} } @article { ISI:A1992JX13600046, title = {FIBER BUNDLE PUSHOUT - A TECHNIQUE FOR THE MEASUREMENT OF INTERFACIAL SLIDING PROPERTIES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {75}, number = {11}, year = {1992}, month = {NOV}, pages = {3169-3171}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1992.tb04409.x}, author = {MACKIN, TJ and Zok, FW} } @article { ISI:A1992JD12900025, title = {MATRIX CRACK SPACING IN BRITTLE MATRIX COMPOSITES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {40}, number = {8}, year = {1992}, month = {AUG}, pages = {2033-2043}, issn = {0956-7151}, doi = {10.1016/0956-7151(92)90189-L}, author = {Zok, FW and SPEARING, SM} } @article { ISI:A1992JX13600010, title = {MECHANICAL-BEHAVIOR OF A LAMINAR CERAMIC FIBER-REINFORCED EPOXY COMPOSITE}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {75}, number = {11}, year = {1992}, month = {NOV}, pages = {2969-2975}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1992.tb04373.x}, author = {FOLSOM, CA and Zok, FW and Lange, FF and Marshall, DB} } @article { ISI:A1992HZ03800008, title = {TOUGHENING IN BRITTLE SYSTEMS BY DUCTILE BRIDGING LIGAMENTS}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {40}, number = {7}, year = {1992}, month = {JUL}, pages = {1531-1537}, issn = {0956-7151}, doi = {10.1016/0956-7151(92)90096-W}, author = {BANNISTER, M and SHERCLIFF, H and BAO, G and Zok, F and ASHBY, MF} } @article { ISI:A1991ET03800009, title = {DEFORMATION CONSOLIDATION OF METAL POWDERS CONTAINING STEEL INCLUSIONS}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {39}, number = {2}, year = {1991}, month = {FEB}, pages = {209-219}, issn = {0956-7151}, doi = {10.1016/0956-7151(91)90269-7}, author = {Lange, FF and ATTERAAS, L and Zok, F and PORTER, JR} } @article { ISI:A1991FE91800028, title = {EFFECTS OF FIBER FAILURE ON FATIGUE CRACKING IN A TI/SIC COMPOSITE}, journal = {SCRIPTA METALLURGICA ET MATERIALIA}, volume = {25}, number = {4}, year = {1991}, month = {APR}, pages = {911-916}, issn = {0956-716X}, doi = {10.1016/0956-716X(91)90247-X}, author = {WALLS, D and BAO, G and Zok, F} } @article { ISI:A1991EV67600005, title = {THE INFLUENCE OF PRESSURE ON FRACTURE OF A TI-V PLATE STEEL}, journal = {CANADIAN METALLURGICAL QUARTERLY}, volume = {30}, number = {1}, year = {1991}, month = {JAN-MAR}, pages = {31-37}, issn = {0008-4433}, author = {Zok, F and Embury, JD and BOYD, JD} } @article { ISI:A1991GD84800021, title = {THE MECHANICAL-BEHAVIOR OF A HYBRID METAL MATRIX COMPOSITE}, journal = {METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE}, volume = {22}, number = {9}, year = {1991}, month = {SEP}, pages = {2107-2117}, issn = {0360-2133}, doi = {10.1007/BF02669878}, author = {Zok, F and JANSSON, S and Evans, AG and NARDONE, V} } @article { ISI:A1991ET96300029, title = {MODE-I FRACTURE-RESISTANCE OF A LAMINATED FIBER-REINFORCED CERAMIC}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {74}, number = {1}, year = {1991}, month = {JAN}, pages = {187-193}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1991.tb07316.x}, author = {Zok, F and SBAIZERO, O and HOM, CL and Evans, AG} } @article { ISI:A1991GC00600016, title = {PACKING DENSITY OF COMPOSITE POWDER MIXTURES}, journal = {JOURNAL OF THE AMERICAN CERAMIC SOCIETY}, volume = {74}, number = {8}, year = {1991}, month = {AUG}, pages = {1880-1885}, issn = {0002-7820}, doi = {10.1111/j.1151-2916.1991.tb07803.x}, author = {Zok, F and Lange, FF and PORTER, JR} } @article { ISI:A1991GN77800017, title = {POWDER PROCESSING OF CERAMIC MATRIX COMPOSITES}, journal = {MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, volume = {144}, year = {1991}, note = {SYMP OF THE AMERICAN SOC OF METALS INTERNATIONAL MATERIALS WEEK : INNOVATIVE INORGANIC COMPOSITES, DETROIT, MI, OCT 08-11, 1990}, month = {OCT 1}, pages = {143-152}, issn = {0921-5093}, doi = {10.1016/0921-5093(91)90219-D}, author = {Lange, FF and LAM, DCC and SUDRE, O and FLINN, BD and FOLSOM, C and VELAMAKANNI, BV and Zok, FW and Evans, AG} } @article { ISI:A1991GN77800018, title = {PROCESSING AND PROPERTIES OF AL2O3-AL COMPOSITES}, journal = {MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, volume = {144}, year = {1991}, note = {SYMP OF THE AMERICAN SOC OF METALS INTERNATIONAL MATERIALS WEEK : INNOVATIVE INORGANIC COMPOSITES, DETROIT, MI, OCT 08-11, 1990}, month = {OCT 1}, pages = {153-157}, issn = {0921-5093}, doi = {10.1016/0921-5093(91)90220-H}, author = {FLINN, BD and Zok, FW and Lange, FF and Evans, AG} } @article { ISI:A1991GC48800002, title = {THE ROLE OF INTERFACES IN FIBER-REINFORCED BRITTLE MATRIX COMPOSITES}, journal = {COMPOSITES SCIENCE AND TECHNOLOGY}, volume = {42}, number = {1-3}, year = {1991}, pages = {3-24}, issn = {0266-3538}, doi = {10.1016/0266-3538(91)90010-M}, author = {Evans, AG and Zok, FW and Davis, J} } @article { ISI:A1990EA94800027, title = {ON THE ANALYSIS OF DELAMINATION FRACTURES IN HIGH-STRENGTH STEELS}, journal = {METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE}, volume = {21}, number = {9}, year = {1990}, month = {SEP}, pages = {2565-2575}, issn = {0360-2133}, doi = {10.1007/BF02647002}, author = {Zok, F and Embury, JD} } @article { ISI:A1990EN96200024, title = {EFFECTS OF DAMAGE ON THE FLOW STRENGTH AND DUCTILITY OF A DUCTILE AL-ALLOY REINFORCED WITH SIC PARTICULATES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {38}, number = {12}, year = {1990}, month = {DEC}, pages = {2613-2619}, issn = {0956-7151}, doi = {10.1016/0956-7151(90)90273-J}, author = {Yang, J and CADY, C and HU, MS and Zok, F and MEHRABIAN, R and Evans, AG} } @article { ISI:A1990EC96200011, title = {LARGE-SCALE BRIDGING IN BRITTLE MATRIX COMPOSITES}, journal = {ACTA METALLURGICA ET MATERIALIA}, volume = {38}, number = {10}, year = {1990}, month = {OCT}, pages = {1895+}, issn = {0956-7151}, doi = {10.1016/0956-7151(90)90301-V}, author = {Zok, F and HOM, CL} } @article { ISI:A1989AY93900015, title = {ON THE INFLUENCE OF HYDROSTATIC-PRESSURE ON THE FRACTURE OF NI3AL}, journal = {SCRIPTA METALLURGICA}, volume = {23}, number = {11}, year = {1989}, month = {NOV}, pages = {1893-1897}, issn = {0036-9748}, doi = {10.1016/0036-9748(89)90478-X}, author = {Zok, F and Embury, JD and VASUDEVAN, AK and RICHMOND, O and HACK, J} } @article { ISI:A1988P145300035, title = {THE EFFECTS OF PRESSURE ON FRACTURE OF COMPOSITE-MATERIALS}, journal = {CIM BULLETIN}, volume = {81}, number = {914}, year = {1988}, month = {JUN}, pages = {61}, issn = {0317-0926}, author = {Zok, F and Embury, JD} } @article { ISI:A1988N414400002, title = {FRACTURE MECHANISM MAPS IN STRESS SPACE}, journal = {ACTA METALLURGICA}, volume = {36}, number = {5}, year = {1988}, month = {MAY}, pages = {1213-1228}, issn = {0001-6160}, doi = {10.1016/0001-6160(88)90274-X}, author = {TEIRLINCK, D and Zok, F and Embury, JD and ASHBY, MF} } @article { ISI:A1987J423700051, title = {DAMAGE ACCUMULATION IN DUCTILE AND SHEAR FRACTURE PROCESSES}, journal = {CIM BULLETIN}, volume = {80}, number = {902}, year = {1987}, month = {JUN}, pages = {66}, issn = {0317-0926}, author = {Embury, JD and Zok, F} } @article { ISI:A1987L535100025, title = {DILATIONAL DAMAGE ACCUMULATION DURING FATIGUE OF POLYPROPYLENE}, journal = {JOURNAL OF MATERIALS SCIENCE}, volume = {22}, number = {11}, year = {1987}, month = {NOV}, pages = {3995-4001}, issn = {0022-2461}, doi = {10.1007/BF01133350}, author = {Zok, F and SHINOZAKI, DM} }