羅裴,姜德生,郭丹
（光纖傳感技術(shù)與信息處理教育部重點(diǎn)實(shí)驗(yàn)室，武漢理工大學(xué)，湖北 武漢，430070）
摘要：本文介紹了小波包多尺度分析的基本原理，設(shè)計(jì)了振動狀況下智能復(fù)合材料板損傷檢測的實(shí)驗(yàn)裝置。采用光纖光柵作為傳感元件，采集智能復(fù)合材料板在振動狀況下的動態(tài)應(yīng)變，以小波包分析技術(shù)為信號提取工具，提取簡支板結(jié)構(gòu)在不同損傷狀況下的特征指標(biāo)，從而實(shí)現(xiàn)了智能復(fù)合材料四邊簡支板結(jié)構(gòu)的損傷檢測。
關(guān)鍵詞：小波包；多尺度分析；智能復(fù)合材料；損傷檢測
中圖分類號：TU311.41 文獻(xiàn)標(biāo)識碼：A 文章編號：1672-4984(2006)03-0048-03
Application of wavelet packet multi-scale analysis on checking damage of intelligent composite plate
LUO Pei, JIANG De-sheng, GUO Dan
(Key Laboratory of Fiber Optical Sensing and Information Processing(Ministry of Education)，
Wuhan University of Techonology, Wuhan 430070，China)
Abstract: 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 element, 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-side supported plate structure has been realized.
Key words: Wavelet packet; Multi-scale analysis; Intelligent composite materials; Damage detection
