Search Results - "Beltz, Glenn E."

Potential-based and non-potential-based cohesive zone formulations under mixed-mode separation and over-closure. Part I: Theoretical analysis by McGarry, J. Patrick, Ó Máirtín, Éamonn, Parry, Guillaume, Beltz, Glenn E.

“…This paper presents a thorough analysis of potential-based and non-potential-based cohesive zone models (CZMs) under conditions of mixed-mode separation and…”
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The effect of crack blunting on the competition between dislocation nucleation and cleavage by FISCHER, Lisa L, BELTZ, Glenn E

“…To better understand the ductile versus brittle fracture behavior of crystalline materials, attention should be directed towards physically realistic crack…”
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Potential-based and non-potential-based cohesive zone formulations under mixed-mode separation and over-closure–Part II: Finite element applications by Máirtín, Éamonn Ó, Parry, Guillaume, Beltz, Glenn E., McGarry, J. Patrick

“…This paper, the second of two parts, presents three novel finite element case studies to demonstrate the importance of normal-tangential coupling in cohesive…”
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Ductile–brittle behavior of (0 0 1)[1 1 0] nano-cracks in bcc iron by Machová, Anna, Beltz, Glenn E.

“…We carry out atomistic simulations and stress analysis of crack behavior in bcc iron under Mode I, quasi-static loading. We observe that the formation of…”
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Anisotropy of tensile stresses and cracking in nonbasal plane AlxGa1−xN/GaN heterostructures by Young, Erin C., Romanov, Alexey E., Gallinat, Chad S., Hirai, Asako, Beltz, Glenn E., Speck, James S.

“…Al x Ga 1 − x N films grown on nonpolar m {11¯00} and {112¯2} semipolar orientations of freestanding GaN substrates were investigated over a range of stress…”
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Effect of T-stress on dislocation emission in iron by Beltz, Glenn E., Machová, Anna

“…We compare continuum predictions for dislocation emission from a crack tip loaded under mode I, biaxial conditions with atomistic results for bcc iron. The…”
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Suppression of edge cracking in layered ceramic composites by edge coating by Monkowski, Adam J., Beltz, Glenn E.

“…A strategy is proposed to reduce surface tensile stresses that develop in ceramic microlaminate structures. As a specific example, surface stresses, which can…”
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Crack formation in surface layers with strain gradients by Romanov, Alexei E., Beltz, Glenn E., Speck, James S.

“…The problem of crack formation in surface layers where a linear profile of elastic strain prevails through the thickness of a layer is investigated. Such…”
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Tension–shear coupling in slip and decohesion of iron crystals by da Silva, Kelly D., Beltz, Glenn E., Machová, Anna

“…Results from atomistic simulations are used to parameterize constitutive relations involving the Frenkel sinusoidal dependence of shear stress on sliding…”
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Enhancing the electron mobility of SrTiO3 with strain by Jalan, Bharat, Allen, S. James, Beltz, Glenn E., Moetakef, Pouya, Stemmer, Susanne

“…We demonstrate, using high-mobility SrTiO3 thin films grown by molecular beam epitaxy, that stress has a pronounced influence on the electron mobility in this…”
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Curvature of HVPE c-plane grown GaN wafers in the relation to stress gradients caused by inclined threading dislocations by Foronda, Humberto Miguel, Romanov, Alexey E., Young, Erin C., Robertson, Christian A., Beltz, Glenn E., Speck, James S.

“…We investigate the bow of free standing (0001) oriented HVPE grown GaN wafers and demonstrate that their curvature is consistent with a compressive to tensile…”
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Enhancing the electron mobility of SrTiO{sub 3} with strain by Jalan, Bharat, Moetakef, Pouya, Stemmer, Susanne, Allen, S. James, Beltz, Glenn E.

“…We demonstrate, using high-mobility SrTiO{sub 3} thin films grown by molecular beam epitaxy, that stress has a pronounced influence on the electron mobility in…”
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Enhancing the electron mobility of SrTiO 3 with strain by Jalan, Bharat, Allen, S. James, Beltz, Glenn E., Moetakef, Pouya, Stemmer, Susanne

“…We demonstrate, using high-mobility SrTiO 3 thin films grown by molecular beam epitaxy, that stress has a pronounced influence on the electron mobility in this…”
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Anisotropy of tensile stresses and cracking in nonbasal plane Al x Ga 1 − x N / GaN heterostructures by Young, Erin C., Romanov, Alexey E., Gallinat, Chad S., Hirai, Asako, Beltz, Glenn E., Speck, James S.

“…Al x Ga 1 − x N films grown on nonpolar m { 1 1 ¯ 0 0 } and { 11 2 ¯ 2 } semipolar orientations of freestanding GaN substrates were investigated over a range…”
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Anisotropy of tensile stresses and cracking in nonbasal plane Al{sub x}Ga{sub 1-x}N/GaN heterostructures by Young, Erin C., Gallinat, Chad S., Hirai, Asako, Speck, James S., Romanov, Alexey E., Ioffe Physical Technical Institute RAS, St. Petersburg 194021, Beltz, Glenn E.

“…Al{sub x}Ga{sub 1-x}N films grown on nonpolar m (1100) and (1122) semipolar orientations of freestanding GaN substrates were investigated over a range of…”
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Role of Crack Blunting in Ductile Versus Brittle Response of Crystalline Materials by Beltz, Glenn E., Lipkin, Don M., Fischer, Lisa L.

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Ductile-brittle behavior of (0 0 1)[1 1 0] nano-cracks in bcc iron by MACHOVA, Anna, BELTZ, Glenn E

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Crack formation in surface layers with strain gradients by ROMANOV, Alexei E, BELTZ, Glenn E, SPECK, James S

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A finite element model of the stress field in a star-shaped inclusion by Wulf, Jürgen, Lipetzky, Pete, Beltz, Glenn E., Steinkopff, Thorsten

“…The elastic stress field in the neighborhood of an inclusion in the shape of a five-pointed star embedded in a homogeneous matrix subject to a remote uniaxial…”
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