Impact of Initial Stress on Reflection and Transmission of SV-Wave between Two Orthotropic Thermoelastic Half-Spaces

Reflection and transmission of plane waves between two initially stressed thermoelastic halfspaces with orthotropic type of anisotropy is studied. Incidence of a SVtype wave from the lower halfspace is considered and the amplitude ratios of the reflected and transmitted SVwave, Pwave and thermal wave are obtained by using appropriate boundary conditions. Numerical computation for a particular model is performed and graphs are plotted to study the effect of angle of incidence of the wave and the initial stress parameters of the halfspaces. From the graphical results, it is found that the modulus of reflection and transmission coefficients of the thermal wave is very less in comparison to reflection and transmission coefficients of P and SVwaves. It is also observed that for vertical incidence of SVwave we have only reflected and refracted SVwaves and there is no reflected or refracted P and thermal waves, whereas for horizontal incidence of SVwave there exists only reflected SVwave and no other reflected or transmitted wave exists. Moreover, it is found that all the reflection and transmission coefficients are strongly affected by the initial stress parameters of the both halfspaces.