无损检测 声发射检测 (AT) 通过声发射检测泄漏

[中文适用范围]： 本文件规定了声发射检测 (AT) 泄漏检测所需的一般原则。它针对该方法在结构和部件上的应用，在这些结构和部件中，由于压力差异而出现泄漏流并产生声发射 (AE)。它描述了 AE 产生的现象以及流体性质、间隙形状、波传播和环境的影响。讨论了不同的应用技术、仪器和 AE 结果的呈现。还包括编写应用文件的指南，这些指南描述了声发射测试应用的具体要求。附件 A 给出了一些泄漏测试应用的程序。 [外文原描述]： This document specifies the general principles required for leak detection by acoustic emission testing (AT). It is addressed to the application of the methodology on structures and components, where a leak flow as a result of pressure differences appears and generates acoustic emission (AE). It describes phenomena of the AE generation and influence of the nature of fluids, shape of the gap, wave propagation and environment. The different application techniques, instrumentation and presentation of AE results are discussed. Also included are guidelines for the preparation of application documents which describe specific requirements for the application of the acoustic emission testing. Annex A gives procedures for some leak-testing applications.