Wave Propagation in Orthotropic Generalized Thermoelastic Half-spacewith Voids under Initial Stress

The purpose of this research is to study the wave propagation in orthotropic generalized thermoelastic half-space with voids under initial stress. It is found that, for two dimensional model of orthotropic generalized thermoelastic material with voids under initial stress, there exists three quasi-longitudinal waves namely, quasi-longitudinal wave (QP-mode), quasi-longitudinal thermal wave (QPT-mode),quasi-longitudinal volume fractional wave (QPV-mode) and one quasi-transverse wave (QSV-mode). The phase velocities and attenuation coefficients of these plane waves are also computed and depicted graphically along various direction of wave propagation. To discuss the reflection characteristics of these waves, stress free, thermally insulated or isothermal boundary conditions are considered. The amplitude ratios of various reflected waves to that of incident waves have been obtained numerically and presented graphically. Some special cases of interest are also discussed.