Damage detection method based on continuous wavelet transform of second harmonic Lamb waves

被引：6

作者：

Zheng, Kaihong ^{[1
]}

Shao, Shixuan ^{[1
]}

Hameed, Muhammad Saqib ^{[1
,2
]}

Li, Xiaoyang ^{[3
]}

Zhu, Wenqing ^{[1
]}

Chen, Jianlin ^{[1
]}

Li, Zheng ^{[1
]}

Shui, Guoshuang ^{[3
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing, Peoples R China

[2] Univ Lahore, Lahore Sch Aviat, Lahore, Pakistan

[3] Beijing Jiaotong Univ, Dept Mech, Beijing, Peoples R China

来源：

NONDESTRUCTIVE TESTING AND EVALUATION | 2023年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Non-destructive testing; nonlinear lamb waves; composite laminates; continuous wavelet transform; TIME-REVERSAL INVARIANCE; FATIGUE DAMAGE; GENERATION; IDENTIFICATION; SIMULATION;

D O I：

10.1080/10589759.2023.2181960

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The nonlinear Lamb waves are sensitive to closed micro cracks and have a great potential for the detection of damage to prevent the catastrophic failure of entire structure. A five-stage closed micro crack localisation method based on time of flight (ToF) of the second harmonic Lamb waves is proposed in this research. The first step is frequency analysis of the received signals to ensure the generation of second harmonic wave. The second step is to extract second harmonic wave component in frequency range. The third step is to obtain wave signals in time domain. The fourth step is to extract ToF of second harmonic wave. The fifth step is to locate damage with ToFs. The method provides an effective strategy based on wavelet transform to extract the second harmonic Lamb waves from the dynamic response signals for the detection of closed micro crack. The numerical and experimental results indicate that the proposed method can accurately locate the closed micro crack in plate-like metallic and composite structures.

引用

页码：1006 / 1026

页数：21

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