激光在金属中激励超声脉冲的研充

A Study of the Laser Generated Ultrasonic in Metal

报道了用Q开与YAG激光器在金属中激励超声脉冲,以及激光能量、材料表面状况和材料中人工缺陷对激光激励超声脉冲影响的研究结果,它对于研究激光与物质的相互作用以及将激光超声用于无损检测都是有益的。

Ultrasonic pulse are generated by irradiation with a Q-switched Nd: YAG laser. The effects of the laser power density and the conditions of the metal surface on the intensity of the ultrasonic pulse are studied. The effects of a simulated defect in the metal sample on the propagation of the ultrasonic pulse are also studied.