Abstract: Acoustic Emission Testing (AET) technique is a dynamic testing technology. It can provide real time information about flaw that produce acoustic emission source by inflicted load. It fits the case such as online monitoring and controlling, safety evaluating, and disaster forecasting. It can solve the problem which can’t be solved by means of conventional non-destructive testing. The example application on metal structures and equipment for the water conservancy and hydropower engineering projects proves that AET technique is a useful means for monitoring on-line and controlling or safety evaluating.?

摘要： 声发射检测技术是一种动态的检测技术; 可实时提供构件中产生声发射源的缺陷在外加荷载等因素的作用下所呈现出来的信息．适合于在线监控、安全评估和早期险情预报。可解决常规无损检测方法所不能解决的问题。通过在水利水电工程上的应用实侧证明．声发射检测技术是水利水电工程金属结构、机电设备在线监控和安全评估的有效手段。