CALCULATION FOR THE THERMAL DEGRADATION EFFECTS IN THE PRELOADED METAL MATERIAL IRRADIATED BY CW LASER BEAM

The termal degradation effects in the preloaded metal thin plate irradiated by CW laser beam are calculated with the finite element method. A two dimensional mode to calculate the degradation effects induced by CW laser beam is set up. The yielded degradation thresholds and time as well as the dependence of the degradation threshold and time on the laser power densities and the preloads are given.