声发射检测是一种新型动态无损检测技术,它具有灵敏度高、能在动态条件下连续检测、并可对重要构件实现实时监测报警等特点,因此发展很快.对于声发射技术在材料断裂、脆性、相变等方面的应用情况,本文做一介绍和进一步的分析,以改进和提高目前的应用水平. Acoustic emission detection is a new type of dynamic non-destructive testing technology, which has the characteristics of high sensitivity, continuous detection under dynamic conditions and real-time monitoring and alarming of important components, so it develops rapidly.As for the acoustic emission technology in material fracture, Brittle, phase change and other aspects of the application of this article to do an introduction and further analysis to improve and enhance the current level of application.