Relaxation effects on thermal shock problems in an elastic half-space of generalized magneto-thermoelastic waves

The propagation of electromagneto-thermo-elastic disturbances produced by thermal shock based on Lord-Shulman (L-S), Green-Lindsay (G-L) and classical dynamical coupled (CD) theories in a perfectly conducting half-space are studied. There acts an initial magnetic field parallel to the plane boundary of the half-space. The normal mode analysis is used to obtain the exact expressions for the considered variables. The distributions of the considered variables are represented graphically for each case. A comparison is made with the results predicted by the coupled theory. It is found that the magnetic field has decreasing effect.