The signal analysis of Lamb wave in steel plates strengthened by CFRP with interface debonding

被引:5
作者
Chen, Baihua [1 ]
Zhang, Yu [1 ]
Wang, Qingsong [1 ]
Zhang, Hongyu [1 ]
Wang, Yi [1 ]
机构
[1] China Univ Petr, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Lamb waves; CFRP; Steel plate; Interface debonding; Signal analysis; BEHAVIOR;
D O I
10.1016/j.oceaneng.2023.115061
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
Interface debonding may happen in steel structures repaired or strengthened by Carbon Fiber Reinforced Polymers (CFRP), which will reduce ultimate loads and fatigue life of the structures. In this paper, a nondestructive method to test the interface debonding using Lamb waves is proposed. The electromechanical finite element detection model of a steel plate strengthened by CFRP is constructed, and the results have good consistency with experimental results. The effects of debonding position and debonding degree on the received signals are discussed in this paper, the signal waves are analyzed by the wavelet time-frequency conversion method and wavelet packet analysis method, and the relationship between the signal waves and the debonding parameters are obtained, which could support the damage detection of the repaired or strengthened structures by CFRP in the future.
引用
收藏
页数:10
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