声发射源信号强度的“逆源”问题研究  

Study on Reverse Source of AE Source Signal Intensity

作　　者：戴光[1,2] 徐彦廷[1,2] 李伟 李善春[1,2] 

机构地区：[1]大庆石油学院石油机械系 [2]大庆油田化工总厂

出　　处：《大庆石油学院学报》1998年第3期59-62,共4页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金;大庆石油学院自然科学基金

摘　　要：依据弹性波衰减理论，建立了利用实测信号幅度反推声发射源信号幅度的关系式和计算机数值算法，将反推过程编制了计算机程序，为评价声发射源的严重度提供了有效计算声发射源信号强度的方法．还给出两种板厚的反推算例，其反推声源信号幅值的误差不大于１ｄＢ。According to the attenuation theory of elastic wave, a relationship of signal amplitude of reverse source by means of the signal amplitude being detected is established, and the intensity of source is approximately reversed with numerical calculation by computer. For assessment of the severity of AE sources, a calculation method of the signal intensity on AE source is provided. To illustrate this, two examples of reverse calculation for two different thickness of plates are shown, the error of the amplitude calculated for reverse source is ≤1 dB.

关 键 词：声发射源 信号幅度 数值计算 压力容器 

分 类 号：TH49[机械工程—机械制造及自动化]