The paper briefly investigates the ultrasonic testing of hydrogen-induced cracking (HIC) for in-service LPG tanks , and analyses types of echo waves of the cracking.

• 简要地探讨液化石油气贮罐母材中氢致分层类缺陷的超声波检测,对检测的几种超声波反射波形进行了分析,并给出了确定缺陷边界和深度范围的方法。