应用声发射对火箭发动机壳体行非破坏检查

• 作 者: 走崎信也 周凤春
• 机 构: 新日本制鐵,
• 出 处: 国外固体火箭技术
• 发表日期: 1979年02期
• 关键词: 火箭发动机壳体 声发射 无损检验 应力集中 图型 集中度 试验压力 发生数 评价方法 能量指数

前言声发射(Acoustic Emission简称AE)无损检验最近被重视。AE方法是利用物体受到应力时,从缺陷或应力集中部位发出的声发射,进行检查的方法,从AE的发生程度,而知道缺陷的位置和程度。AE法与其他的无损检验方法(射线、超声波等)不同,其他方法是测量静态缺陷的大小和位置,来判断有害度,AE法可以由AE信息直接知道物体实际承受应力时,缺陷及应力集中部分与其他部分比较有什么危险。

Preface Acoustic Emission (AE) nondestructive testing has recently been taken seriously. AE method is the use of objects under stress, from the defect or stress concentration of the site issued by the acoustic emission, inspection methods, from the degree of occurrence of AE, and know the location and extent of defects. AE method and other non-destructive testing methods (radiation, ultrasound, etc.) is different from other methods is to measure the size and location of static defects to determine the degree of harm, AE method can be directly known by the AE information objects actually bear the stress, defects and stress concentration Part and other parts of the more dangerous.