应用局域波对声发射信号监测提取

摘要

The possibility of using local-wave to detect and characterize the acoustic emission signals produced by the crack in the steel tube was presented in this paper. After the theory of localwave was introduced,the characteristics of acoustic emission signals and the system of the acoustic emission testing were analyzed. A sample of the crack in the steel tube was given to demonstrate the feasibility of local-wave in the feature extraction.%介绍了局域波的基本原理,分析了声发射信号的特点和声发射信号检测系统,提出了局域波分解特征量提取技术.通过在钢管裂纹声发射的一个实际信号中的应用,验证了局域波特征量提取的有效性.