Results 191 to 200 of about 8,208,209 (253)

Critical Thickness for Strained Quantum Wires

MRS Proceedings, 1995
ABSTRACTThe stability of strained quantum wires against the propagation of threading dislocations is considered, using a critical thickness criterion due to Matthews and Blakeslee that is extensively used for strained layers. Given first are results for the critical mismatch at which a buried wire of a given thickness becomes susceptible to degradation.
T. J. Gosling, L. B. Freund
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Critical strain to dead bend

Journal of Materials Science Letters, 1987
On essaie de montrer qu'il y a une relation entre morphologie fibrillaire, resistance a la compression, bandes de cisaillement, deformation non elastique et faible recourance a faibles contraintes.
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Critical Dose for Strained Layer Configurations

Physica Status Solidi (a), 1996
We introduce an equilibrium critical Ge dose as stability criterion for strained SiGe structures, which is based on our new approach in equilibrium theory for strained layer relaxation reported in a recent paper. This critical dose concept for strained layers having a variable concentration of solute atoms in the host lattice is more appropriate to ...
A. Fischer, H. Kühne
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Critical strain of the sharp indentation through serration behavior with strain rate

International Journal of Mechanical Sciences, 2019
Abstract The indentation test is often used to determine the mechanical properties of materials, and its results are typically compared with uniaxial test results. However, the relationship between the indentation and uniaxial tests is unclear. Previously, the limit at which the indentation and uniaxial tests can be related has been determined by ...
Hiroyuki Yamada, Nagahisa Ogasawara
exaly   +2 more sources

An interpretation of the critical strain measure for polymers

Journal of Applied Polymer Science, 1979
During creep deformation many polymeric materials exhibit small cracklike zones, crazes. In the literature it is reported that crazing will not occur if the strain is kept under a critical value, specific for each material. This fact has importance in avoiding rupture.
L. Br??the, M. Rigdahl
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The deviatoric strain description of the critical properties of Nb3Sn conductors

Physica C: Superconductivity and Its Applications, 2002
It is well known that the critical field, -temperature and -current of Nb3Sn superconductors are very sensitive to deformations. In 1994 a new, three-dimensional (3D) model was presented, which accurately describes the behavior of the critical parameters with respect to strain, the so-called deviatoric strain description.
B Ten Haken, H H J Ten Kate
exaly   +4 more sources

On critical surface strain during hot forging of lubricated aluminum alloy

, 2020
We present a new concept of critical surface strain to evaluate the lubrication-effective limit for process design in metal forming. Finite-element predictions obtained at various fixed Coulomb friction coefficients were compared in hot-forging ...
Seong-Won Lee, Jung-Min Lee, M. Joun
semanticscholar   +1 more source

Critical Tensile Strain in Asphalt Pavements

Transportation Engineering Journal of ASCE, 1973
Charts based on two-layer elastic theory are presented for determining the critical tensile strain at the bottom of the asphalt-bound layer under single, dual, and dual-tandem wheels. They can be applied directly to full-depth asphalt pavements where only two layers are involved.
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The strain quantum critical point for superstripes

AIP Conference Proceedings, 2001
The experimental determination of the quantum critical point (QCP) that controls the self-organization of charged striped domains in cuprate perovskites is reported. The phase diagram of doped cuprate superconductors is determined by the hole doping δ and by a second variable: the micro-strain e of the Cu–O bond length.
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A critical strain design limit for thermoplastics

Materials & Design, 1983
Abstract A strain limit is defined to aid designers in the cost effective design of lightly stressed, light weight thermoplastic components subject to degrading environments.
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