DEFORMATION ANALYSIS OF LASER PROCESSED GRAIN ORIENTED SILICON STEEL SHEET USING MOIRE INTERFEROMETRY(Special Issue on Hierarchical Estimations of Materials Strength)

Abstract

In this study, the residual deformation of silicon steel sheets with lowered core loss by strong power laser was investigated in combination of two deposited metal layers grating for high temperature with laser moire interferometry method. The silicon steel sheet was processed with different processing parameters under a CO2 and a YAG laser, respectively. The distributions of residual deformation in x and y axes were obtained. The experimental results showed that the silicon steel sheet was under the state of compressive residual strain, and were analyzed in detail.