Analysis of diffusion bonded part using immersed UT method

This paper present a summary of the immersion ultrasonic test to analyse the quality of diffusion bonding parts. The most important property of diffusion bonding parts is bonding strength, and that can be obtained by shear test. However, such test is destructive and it is hard to investigate all interface. By comparing among data obtained by ultrasonic test (C Scan) and those by shear test(bonding strength), these data are shown to be in good relation. Therefore ultrasonic C Scan test result can be used successfully in quantitative quality control for diffusion bonded parts.