摘要
模态声发射是材料声发射检测的新方法。在模态声发射中 ,声发射波形被高度真实地采样 ,故能顺利解决源定位不准确、信号解释和噪声剔除困难等阻碍声发射推广应用的一些问题。本文介绍了模态声发射检测技术的基本原理、信号特征、噪声剔除和源定位等内容。
Modal acoustic emission (MAE) is a new method for acoustic emission testing of materials. In MAE, acoustic emission waves are captured with high fidelity, so MAE fairly solves and explains the problems which impede the application of acoustic emission technique, such as incorrect source location, difficult signal explanation and noise rejection. This paper introduces modal acoustic emission evaluation technique, including its fundamental principles, signal characteristic, noise rejection and source location etc.
出处
《航空制造技术》
北大核心
2003年第4期74-77,91,共5页
Aeronautical Manufacturing Technology
关键词
模态声发射
飞机结构
无损检测
宽带传感器
源定位
Modal acoustic emission (MAE) Windband sensor Resonant sensor Source location
