摘要
本文介绍了小波包多尺度分析的基本原理,设计了振动状况下智能复合材料板损伤检测的实验装置。采用光纤光栅作为传感元件,采集智能复合材料板在振动状况下的动态应变,以小波包分析技术为信号提取工具,提取简支板结构在不同损伤状况下的特征指标,从而实现了智能复合材料四边简支板结构的损伤检测。
This article introduced essential principle of wavelet packet multi-scale analysis and design of experimental equipment of damage checking of intelligent composite materials under vibrating state. Fiber gratings, as sensing dement, collected the dynamic strain of intelligent composite materials plate under vibrating state. Wavelet packet analysis, as signal extracting tool, extracted characeristic index of four-side simple supported plate structure with different damage state.So,the damage checking of intelligent composite materials four-slde supported plate structure has been realized.
出处
《中国测试技术》
2006年第3期48-50,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
小波包
多尺度分析
智能复合材料
损伤检测
Wavelet packet
Multi-scale analysis
Intelligent composite materials
Damage detection
