子波变换在复合材料冲击损伤实时检测中的应用(英文)

Application of Wavelet Transformation to Real-time Impact Damage Detection of Composite Material Structure

基于传统信号处理对非平稳信号的局限 ,分析了子波变换下奇异信号和白噪声在多尺度空间中模极大值传播特性 ,对复合材料所受冲击信号进行处理 ,提出一种对相似信号进行归类的方法 ,该方法能实时有效地从冲击信号中提取冲击的大小及位置信息 ,并对复合材料冲击损伤准确定位。

In view of the limitation of classical signal processing method in case of non-stationary, the paper analyzes module maximum evolution behavior of singular signal and random noise in multi-scale space using the wavelet transformation. Impact signal is processed. The result shows that it is useful to obtain the place information and status information from the smashing signal. It shows a nice future of the application in the smashing damage detection of composite material.