小波分析在结构损伤检测中的应用

摘要

Through the vibration signal of a measurement beam, this paper made damage identification research used wavelet packet decomposi tion technique, identified the energy ratio distribution of different frequency bands, analyzed eight energy ratio distribution changes of frequency bands in damage condition, obtained some preliminary results.%通过一根实测简支梁的振动信号，利用小波包分解技术进行损伤识别研究，识别得到不同频带上的能量比分布，分析了8种损伤工况下的频带上的能量比分布变化，得出了一些初步的结果。