نتایج جستجو برای: phase transformations

تعداد نتایج: 649114  

Impact responses of rectangular composite plates with embedded shape memory alloy (SMA) wires are investigated in the present research. The plate is assumed to be placed in a thermal environment; so that in contrast to the available researches in the field, the shape memory and ferroelasticity effects have to be considered also in addition to the superelasticity. The governing equations are der...

2006

Many methods exist for the analysis and for the characterization of the phase transformations of the rapidly solidified alloys, which are also described in the literature [1 3]. frequently used methods are the scanning electron microscopy (sEM), transmission electron microscopy For the characterization of the phase transformations in the alloys during the heat treatment the various methods of t...

2014
Xian-Hua Song Shen Wang Xia-Mu Niu

This paper proposed a novel representation for color image on quantum computer and further explored the basic color and geometric transformations on it. First, a multi-channel representation for color quantum image based on phase transform (CQIPT) is introduced in the form of a normalized state which captures information about colors RGB, transparency and positions. Then, a constructive polynom...

Journal: :CoRR 2007
Linxiang X. Wang Roderick V. N. Melnik

In this paper, the finite volume method is developed to analyze coupled dynamic problems of nonlinear thermoelasticity. The major focus is given to the description of martensitic phase transformations essential in the modelling of shape memory alloys. Computational experiments are carried out to study the thermo-mechanical wave interactions in a shape memory alloy rod, and a patch. Both mechani...

2009
David T. Schoen Stefan Meister Hailin Peng Candace Chan Yuan Yang Yi Cui

Phase transformations at the nanoscale display interesting and important differences from those which occur in the bulk of most materials systems. These differences occur in a large variety of transformations, including melting, solid state phase transformation, chemical ordering and disordering, and chemical and electrochemical transformations. They arise from both the thermodynamic contributi...

2005
M. S. Baptista T. Pereira J. C. Sartorelli I. L. Caldas J. Kurths

We show that, in periodically perturbed chaotic systems, Phase Synchronization appears, associated to a special type of stroboscopic map, in which not only averages quantities are equal to invariants of the perturbation, the angular frequency, but also it exists a very large number of nontransient transformations, possibly infinity. In cases where there is not phase synchronization there is eit...

Journal: :Physical review letters 2009
Wonmin Son Johannes Kofler M S Kim Vlatko Vedral Caslav Brukner

Bell conjectured that a positive Wigner function does not allow violation of the inequalities imposed by local hidden variable theories. A requirement for this conjecture is "when phase space measurements are performed." We introduce the theory-independent concept of "operationally local transformations" which refers to the change of the switch on a local measurement apparatus. We show that two...

Hossein Sarpoolaky M Saeidi S. M. Mirkazemi

Recently, the Al2O3–TiO2–ZrO2 system has found valuable applications, particularly, as a support for NOx storage–reduction (NSR) catalysts. Nanocomposite powders were prepared from the co-precipitation method in inorganic precursors. The behaviors of mixed oxide nanoparticles under ultrasonic irradiation, such as dispersion, and crushing were studied. Phase transformations, crystallite size, an...

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