小波变换在层板实时损伤检测中的应用

鲁大伟; 李书

小波变换在层板实时损伤检测中的应用

鲁大伟,
李书

北京航空航天大学航空科学与工程学院, 北京 100083

基金项目: 航空基础科学基金资助项目(02B51060); 航空支撑科技基金资助项目(01A51007)

详细信息

作者简介:
鲁大伟(1981-),男,辽宁鞍山人,博士生, ludawei1981@sohu.com.

中图分类号: V 2502
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- 文章访问数: 2485
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- 被引次数: 0
出版历程
- 收稿日期: 2003-06-25
- 网络出版日期: 2003-11-30

Application of wavelet transform for laminate real time injuries measuring

Lu Dawei,
Li Shu

School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 采用小波变换作为复合材料层合板损伤检测信号的分析工具,在获得复合材料层合板的动力学响应的基础上,应用小波分析工具对结构响应信号进行提取,对含噪声信号则先作降噪声处理,然后再进行小波分解,根据各种响应信号对损伤的灵敏度,选择损伤特征,通过捕捉结构出现损伤的时刻,实现复合材料损伤实时监控.
- 层板 /
- 小波 /
- 实时监测 /
- 损伤检测
Abstract: The wavelet analysis is adopted in this article for dealing with the signal. The main subject is calculating the dynamics response of samdwich board. Then decompose the structure response signal with wavelet tools after deducing the annoyance. The real-time monitoring for composite material is carried out by catching the damaging moment. Then choose the damage character by comparing the susceptibility to damage among every response signals.
- laminates /
- wavelet /
- real time monitoring /
- damage detection

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参考文献(1)

[1] 杨福生.小波变换的工程分析与应用[M].北京:科学出版社,1999.48~67 Yang Fusheng. The engineering analysis and application of wavelet transform[M]. Beijing:Science Press, 1999.48~67(in Chinese) [2] Daubechies I. The wavelet transform, time-frequency localization and signal analysis[J]. IEEE Trans Information Theory, 1990,36(5):961~1005 [3] 杜元虎,何成辉,王晓梅.小波理论与振动分析[J].东北林业大学学报,1997,25(3):60~64 Du Yuanhu, He Chenghui, Wang Xiaomei. Theory and vibration analysis wavelets . Journal of Northeast Forestry University, 1997,25(3):60~64(in Chinese) [4] 何正嘉.我国小波技术的应用现状与发展[J].振动工程学报,2000,13(增刊):16~22 He Zhengjia. Joyful perspective on boundless waves of wavelets[J]. Journal of Vibration Engineering, 2000,13(sup):16~22(in Chinese) [5] 吴耀军,陶宝祺,史见智. 基于小波包技术的复合材料损伤检测[J].复合材料学报,1997,14(4):95~100 Wu Yaojun, Tao Baoqi, Shi Jianzhi. Damage detection of the composite materials based on wavelet packets[J]. Acta Materiae Compostae Sinica, 1997,14(4):95~100(in Chinese) [6] Rhim J,Lee S W. A network approach for damage detection and identification of structures[J]. AIAA,94-1753-CP,1994.173~1802

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