Ultrasonic echo signal fetures of dissimilar material bonding joints
(1. State Key Lab of Advanced Welding Production Technology,
Harbin Institute of Technology, Harbin 150001, China;
2. JWRI, Osaka University, Japan)
Harbin Institute of Technology, Harbin 150001, China;
2. JWRI, Osaka University, Japan)
Abstract: An ultrasonic evaluation method of echo feature of diffusion bond joint between two dissimilar materials is presented. The echo signal was acquired by an automatic ultrasonic C-scan test system. It is found that the intensity of echo and its phase can be used to evaluate the joint quality, and interface products of dissimilar materials bonding can be evaluated by ultrasonic method.
Key words: non-destructive evaluation; ultrasonic testing; diffusion bonding; dissimilar material