激光超声无损检测  

Laser Uitrasonic Techniques for Non-destructive Testing

作　　者：周辛庚[1] 何存富[1] 

机构地区：[1]清华大学

出　　处：《实验力学》1996年第4期434-441,共8页Journal of Experimental Mechanics

基　　金：国家自然科学基金

摘　　要：本文介绍自行研制的非接触式激光超声激励和检测系统，采用共焦式法布里—珀珞干涉仪实现对纳米量级微幅单次超声窄脉冲的检测，并应用该系统进行激光超声探伤及测定材料弹性常数的研究。A laser ultrasonic generating and non contact detecting system has been developed.The weak generated ultrasonic signal of nanosecond duration and nanometer amplitude can be detected with a confocal Fabry Perot interferometer (CFPI).It can be applied for determination of elastic constants of material and inspection of diffusion bonds.The experimental results show that laser ultrasonic technique is practical and effective.

关 键 词：金属 激光超声 无损检测 材料弹性常数 

分 类 号：TG115.28[金属学及工艺—物理冶金] TB302.5[金属学及工艺—金属学]