基于小波分析的简支梁裂缝识别方法研究

Identification of Simple Supported Beam Cracks by Means of the Wavelet Analysis

利用小波分析技术系统地对简支梁裂缝位置进行识别。从理论上进行了系统分析，利用小波分析具有识别突变信号的特点，有效地识别出裂缝存在的位置，尤其是那种不易察觉的损伤。通过分析及仿真计算，获得了满意的效果，在桥梁故障诊断中具有很高的使用价值。

The wavelet analysis is empolyed to identify the location of simple supported beam cracks systematically.This discontinous function is analysized in a theoretical perspective in this paper.Since the wavelet analysis can be used to identify abrupt signals,it is applied here to identify the location of the cracks effectively,especially the unobservant damage.With the analysis and simulations,we find that the application is quite successful.The method presented here may be useful in bridge failure diagnosis.