نتایج جستجو برای: thermoelastic diffusion with voids
تعداد نتایج: 9260644 فیلتر نتایج به سال:
a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...
A first step towards the development of a model for the Scanning Laser Source technique is presented, which entails an analytical formulation for the transient response of an isotropic, homogeneous, linearly elastic half-space submitted to a pulsed laser line source operating in the thermoelastic regime. The formulation takes into account optical penetration into the material and thermal diffus...
Abstract The aim of the present paper is to study impact diffusion and impedance parameters on propagation plane waves in a thermoelastic medium for Green Lindsay theory (G-L) Coupled (C-T) thermoelasticity. Results are demonstrated boundary conditions amplitude ratios various reflected against angle incidence calculated numerically. characteristics diffusion, relaxation time impedence paramete...
The current study focuses on one-dimensional (1D) deformation in an excited microelongated semiconductor medium impacted by optoelectronics with exponential laser-pulsed heat. Diffusion effect is considered a photothermal problem of semiconducting media. Microelongated and broad variety concepts have been introduced. Appropriate solutions to set diffusion differential equations found. homogeneo...
Microelectronic circuits usually contain small voids or cracks, and if those defects are large enough to sever the line, they cause an open circuit. We present a numerical method for investigating the migration of voids in the presence of both surface diffusion and electric loading. Our mathematical model involves a bulk-interface coupled system, with a moving interface governed by a fourth-ord...
The Kirkendall effect is a consequence of the different diffusivities of atoms in a diffusion couple causing a supersaturation of lattice vacancies. This supersaturation may lead to a condensation of extra vacancies in the form of so-called "Kirkendall voids" close to the interface. On the macroscopic and micrometer scale these Kirkendall voids are generally considered as a nuisance because the...
In this paper, the vibrations of thin plate in modified couple stress thermoelastic medium by using Kirchhoff- Love plate theory has been investigated. The governing equations of motion and heat conduction equation for Lord Shulman (L-S) [1] theory are written with the help of Kirchhoff- Love plate theory. The thermoelastic damping of micro-beam resonators is analyzed by using the normal mode a...
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