Results 221 to 230 of about 227,228 (264)
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Displacive Phase Transformations and Phonons
1994The use of first principles calculations to help understand materials properties has gone from wishful thinking, to feasible, to invaluable, largely because of the doubling of computing power every 18 months for the last 30 years,. We are still, however, just beginning the era when such calculations will become a factor in the synthesis, processing ...
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Compatibility and accommodation in displacive phase transformations
Progress in Materials Science, 2011The role of disconnections and lattice-invariant deformation in displacive phase transformations is reviewed, particularly the defect structure of equilibrium habit planes, the mechanism of transformation, and the deformation accompanying growth. This is extended to the 3-D topological modeling of a product embedded in its parent phase.
J.P. Hirth, R.C. Pond
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Displacement and strain calculations by the phase shift method
Applied Optics, 1987The phase shift method, well known in holographic interferometry, is applied to the deformation of line gratings. The method uses the moire effect but it determines local displacement or strain from the grey values of three shifted images instead of the coordinates of the fringes. The basic equations are derived from the transmittance function.
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Design of Two-Phase Displacement Experiments
Inverse Problems in Engineering, 2002This paper presents and demonstrates a systematic approach to the selection of experimental designs leading to accurate estimates of relative permeability and capillary pressure functions for two-phase flow in porous media. The objective is to select the most appropriate experimental designs for determining the flow functions accurately within the ...
André Sylte +5 more
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Phase properties of displaced number states
Quantum Optics: Journal of the European Optical Society Part B, 1992Phase properties of the displaced number states are studied. Exact analytical formulae describing phase distributions based on different phase approaches are obtained and illustrated graphically. It is shown that the Pegg-Barnett phase distribution P( theta ) and the phase distribution Pw( theta ) associated with the Wigner function are very close to ...
R Tanas +3 more
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Elemental Interfaces and Displacive Phase Transformations
Advances in Science and Technology, 2008Two basic processes, namely shear and shuffling of atomic planes can be considered as elementary mechanisms of displacive phase transformations. The atomistic models suitable to investigate the role of interfaces in the structural changes are tested. The many-body potentials are used for the description of interatomic forces.
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The role of anharmonicity in displacive phase transitions /
1975This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
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Theory of displacive phase transitions in minerals
American Mineralogist, 1997A lattice-dynamical treatment of displacive phase transitions leads naturally to the softmode model, in which the phase-transition mechanism involves a phonon frequency that falls to zero at the transition temperature. The basic ideas of this approach are reviewed in relation to displacive phase transitions in silicates.
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Phase-based displacement measurement on a straight edge using an optimal complex Gabor filter
Mechanical Systems and Signal Processing, 2022Jun Young Jeon +2 more
exaly
Phase meter for measuring displacements
Measurement Techniques, 1988G. P. Pushkarev +2 more
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