基于Lamb波时间反转的复合材料结构损伤监测

中国机械工程 ›› 2011, Vol. 22 ›› Issue (20): 2476-2480.

基于Lamb波时间反转的复合材料结构损伤监测

冯勇明;周丽

南京航空航天大学机械结构强度与振动国家重点实验室,南京,210016

出版日期:2011-10-25 发布日期:2011-11-02
基金资助:
国家自然科学基金国际(地区)合作与交流项目(61161120323)；江苏省“六大人才高峰”项目(2010-JZ-004)；江苏省研究生培养创新工程项目(CX09B_070Z)International Cooperation and Communication Program of National Natural Science Foundation of China( No. 61161120323)

Damage Detection for Composites Based on Time Reversal Lamb Waves Method

Feng Yongming;Zhou Li

State Key Laboratory of Mechanical Structural Strength and Vibration,Nanjing University of Aeronautics & Astronautics,Nanjing,210016

Online:2011-10-25 Published:2011-11-02
Supported by:
International Cooperation and Communication Program of National Natural Science Foundation of China( No. 61161120323)

摘要/Abstract

摘要：

采用Lamb波时间反转法,对复合材料结构进行在线连续健康监测。利用板中Lamb波时间反转法的原理和自聚焦特点,运用时间反转方法，通过传感器网络的布置,激励并接收Lamb波,从而对复合材料结构实现损伤监测。该方法无需结构无损情况的基准信号，能够对有损结构进行快速的损伤定位及损伤大小判断。采用改进的RAPID算法进行损伤成像，得到的损伤图像可将损伤情况可视化。实验研究表明所提方法可行和有效。

关键词:

结构健康监测, 时间反转, 损伤成像, 复合材料, Lamb波



Abstract:

An online damage detection and identification method was presented using time reversal Lamb waves method for continuously monitoring of CFRP composites.The principles and characteristics of the time reversal Lamb waves in a composite plate were introduced firstly.Then the time reversal method was adapted to detect the local defects in composite plate structures, by using an active sensing system mounted on a composite plate to excite and receive Lamb waves. This method can identify the location and size of the damage in a composite plate quickly without relying on past baseline

date.The image that indicates the damage can be obtained by the RAPID algorithm. Experimental results demonstrate the applicability and effectiveness of the proposed method.

Key words:

structural health monitoring, time reversal, damage imaging, composite material, Lamb wave

中图分类号:

V214.8

冯勇明, 周丽.

基于Lamb波时间反转的复合材料结构损伤监测

[J]. 中国机械工程, 2011, 22(20): 2476-2480.

FENG Yong-Meng, ZHOU Li.

Damage Detection for Composites Based on Time Reversal Lamb Waves Method

[J]. China Mechanical Engineering, 2011, 22(20): 2476-2480.

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