Ultrasonic Scatter and Compensation of Interfacial Crack due to Thickness Variation of Dissimilar Bonded Components

이종 접합부재의 두께 변화에 따른 계면균열의 초음파 산란 보정

In this paper, the compensation of interfacial scatter due to adhesive layer and adherend thickness ratio variation was applied to improve measuring precision by calculating ultrasonic attenuation coefficient in the Al/Epoxy dissimilar bonded components. The optimum condition of theoretical value and experimental measuring accuracy by the ultrasonic method in the Al/Epoxy dissimilar bonded components have been investigated. From the experimental results, we proposed a measurement method of the interfacial crack lengths by the ultrasonic attenuation coefficient and discussed it.