الفهرس 
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Abstract
The objective of this thesis is to estimate the effect of the electric field, br magnetic field, gravity field, rotation, initial stress, diffusion, void, fibre-reinforced, br microstretch, and micropolar under varies models of thermoelasticity Classical br Dynamical coupled (CD), Lord-Shulman (L-S), Green-Lindsay (G-L), Dual-PhaseLag (DPL) and Three-Phase-Lag (3PHL) theories by using analytical or numerical br methods. br The thesis consists of two sections in the thermoelasticity field, we present them as br follows: br Section I: Analytical problems br CHAPTER 1, in this chapter, we introduced the literature survey for the works br made in this branch and basic equations concern the basic concepts and their br relations. Also, this chapter can be considered as a background for studying of br elastic media under theories of thermoelasticity which we used in this thesis. br CHAPTER 2, in this chapter, we studied the propagation of SV-waves under the br effect of electromagnetic field and initial stress for three models in thermoelasticity: br the coupled (CD) and Green-Lindsay (G-L) theories, as well as the Dual-Phase-Lag br theory (DPL). The problem of reflection and transmission of thermoelastic waves at br a solid-liquid interface in the presence of electromagnetic fields and initial stress br investigated subjected to certain boundary conditions. The appropriate expressions br to find the amplitudes ratios of the incident waves (SV-waves) have been obtained. br The reflection and transmission coefficients for the incident SV-waves computed br numerically. By using an appropriate material the effect of electric field, magneti.