Search Results - "Buchheit, T. E."

Indentation fracture toughness and acoustic energy release in tetrahedral amorphous carbon diamond-like thin films by Jungk, J.M., Boyce, B.L., Buchheit, T.E., Friedmann, T.A., Yang, D., Gerberich, W.W.

“…The fracture behavior and toughness of thin tetrahedral amorphous carbon (ta-C) films were examined using acoustic-sensing nanoindentation. Laser annealing was…”
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Electrodeposited 80Ni–20Fe (Permalloy) as a structural material for high aspect ratio microfabrication by Buchheit, T.E., Goods, S.H., Kotula, P.G., Hlava, P.F.

“…This article summarizes results from a study directed toward evaluating electrodeposited 80Ni–20Fe as a structural material for the LIGA (German acronym for…”
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Grain-scale experimental validation of crystal plasticity finite element simulations of tantalum oligocrystals by Lim, H., Carroll, J.D., Battaile, C.C., Buchheit, T.E., Boyce, B.L., Weinberger, C.R.

“…•CP-FEM simulations of Ta oligocrystals were validated with experimental intragranular measurements.•Model predictions of strain fields showed good agreement…”
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Measurement of ceramic powders using instrumented indentation and correlation with their dynamic response by Buchheit, T.E., Vogler, T.J.

“…This article discusses an experimental approach for measuring the properties of individual powder particles sized between 25 μm and 100 μm of four common very…”
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Investigating the limits of polycrystal plasticity modeling by Buchheit, Thomas E., Wellman, Gerald W., Battaile, Corbett C.

“…A material model which describes the rate-dependent crystallographic slip of FCC metals has been implemented into a quasistatic, large deformation, nonlinear…”
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An experimental statistical analysis of stress projection factors in BCC tantalum by Carroll, J.D., Clark, B.G., Buchheit, T.E., Boyce, B.L., Weinberger, C.R.

“…Crystallographic slip planes in body centered cubic (BCC) metals are not fully understood. In polycrystals, there are additional confounding effects from grain…”
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Multiscale Modeling of Total Ionizing Dose Effects in Commercial-off-the-Shelf Parts in Bipolar Technologies by Privat, A., Barnaby, H. J., Adell, P. C., Tolleson, B. S., Wang, Y., Han, X., Davis, P., Rax, B. R., Buchheit, T. E.

“…A multiscale modeling platform that supports the "virtual" qualification of commercial-off-the-shelf parts is presented. The multiscale approach is divided…”
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Micromechanical testing of MEMS materials by BUCHHEIT, T. E, GLASS, S. J, SULLIVAN, J. R, MANI, S. S, LAVAN, D. A, FRIEDMANN, T. A, JANEK, R

“…This paper discusses tensile testing techniques and results derived as part of a broader microstructure-properties investigation of structural materials used…”
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Simulating grain growth in a deformed polycrystal by coupled finite-element and microstructure evolution modeling by BATTAILE, C. C, COUNTS, W. A, WELLMAN, G. W, BUCHHEIT, T. E, HOLM, E. A

“…The interplay between deformation and micro structure evolution can be strong and is the basis of a large majority of thermomechanical processing techniques…”
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Oxide dispersion strengthening of nickel electrodeposits for microsystem applications by GOODS, S. H, BUCHHEIT, T. E, JANEK, R. P, MICHAEL, J. R, KOTULA, P. G

“…Oxide dispersion strengthened nickel (ODS-Ni) electrodeposits were fabricated to net shape using the lithography, electroforming, and molding (LIGA) process in…”
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Elastic property differences in a multi-mode optical fiber and the effect on predicted mechanical lifetime by Tandon, R., Buchheit, T.E., Berry, D.M.

“…Multi-mode optical fibers are used for high energy transmission. One configuration of such fibers has a fluorine-doped silica cladding, and a pure silica core…”
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Modeling the effects of stress state and crystal orientation on the stress-induced transformation of NiTi single crystals by BUCHHEIT, T. E, WERT, J. A

“…A model that combines the phenomenological theory of martensite with a generalized Schmid's law has been used to predict the principal stress combinations…”
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Predicting the orientation-dependent stress-induced transformation and detwinning response of shape memory alloy single crystals by BUCCHEIT, T. E, WERT, J. A

“…The present investigation examines three models that predict the orientation dependence of the stress-induced transformation strain in shape memory alloys…”
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Measuring residual stress in glasses and ceramics using instrumented indentation by Buchheit, T.E., Tandon, R.

“…Instrumented indentation has yielded mixed results when used to measure surface residual stresses in metal films. Relative to metals, many glasses and ceramics…”
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Modeling the transformation stress of constrained shape memory alloy single crystals by Comstock, R.J., Buchheit, T.E., Somerday, M., Wert, J.A.

“…Shape memory alloys (SMA) are a unique class of engineering materials that can be further exploited with accurate polycrystal constitutive models. Previous…”
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Strength Distributions in Polycrystalline Silicon MEMS by Boyce, B.L., Grazier, J.M., Buchheit, T.E., Shaw, M.J.

“…Safe and reliable design of MEMS components requires a statistical description of the material properties that are associated with failure. To this end, a…”
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Size and Frequency of Defects in Silicon MEMS by Lavan, David A., Boyce, B. L., Buchheit, T. E.

“…Mechanical testing of thin films for MEMS has progressed from a developmental stage to a point where validated techniques are used to study the behavior of…”
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Transfer of molecules from glia to axon in the squid may be mediated by glial vesicles by Buchheit, T E, Tytell, M

“…Although the transfer of glial proteins into the squid giant axon is well documented, the mechanism of the transfer remains unknown. We examined the…”
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Modeling the stress-induced transformation behavior of shape memory alloy single crystals by Buchheit, T.E., Kumpf, S.L., Wert, J.A.

“…The phenomenological theory of martensite crystallography has been used to determine habit plane/shear direction combinations for stress-induced transformation…”
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An Assessment of the Effectiveness of the Hertzian Indentation Technique for Determining the Fracture Toughness of Brittle Materials by Paliwal, Bhasker, Tandon, Rajan, Buchheit, Thomas E., Rodelas, Jeffrey M.

“…Ring crack initiation loads on glass using a spherical WC indenter were measured, and the methodology proposed by Warren and Hills and Warren was used to…”
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