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1.引言用声发射(AE)技术对压力容器和压力边界进行结构评价是声发射的应用中很有吸引力的领域之一。本文介绍了由NAIS系统最先提出的评价缺陷程度的方法应用于东京大学的M—13火箭发动机壳体的爆破实验的情况,目的是为了评价由于水压压力上升时该发动机壳体的有害度,而且讨论了断口特征和得到的声发射结果之间的关系。更进一步讨论了在高压
1. Introduction The structural evaluation of pressure vessels and pressure boundaries using acoustic emission (AE) techniques is one of the attractive areas for the application of acoustic emissions. This paper introduces the first proposed method of evaluating defects by NAIS system applied to the blasting experiment of M-13 rocket motor shell of Tokyo University. The purpose is to evaluate the damage degree of the shell of the engine due to the rise of hydraulic pressure, , But also discusses the relationship between the fracture characteristics and the acoustic emission results obtained. Further discussion at high pressure