A Damage Localization Method With Multimodal Lamb Wave Based on Adaptive Polynomial Chirplet Transform
A Damage Localization Method With Multimodal Lamb Wave Based on Adaptive Polynomial Chirplet Transform
复制标题
基于自适应多项式Chirplet变换的多模态兰姆波损伤定位方法
DOI：
10.1109/tim.2020.2993342
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发表时间：
2020-05
影响因子：
5.6
通讯作者：
Wei Zhao
中科院分区：
文献类型：
--
作者：
Zhe Wang;Songling Huang;Shen Wang;Qing Wang;Wei Zhao
超声兰姆波检测可以对板结构进行健康监测，在现代工业中得到了广泛的应用。为了获得损伤的位置并进一步形成损伤成像，飞行时间（TOF）是一个关键参数。然而，兰姆波的色散和多峰性质阻碍了TOF的准确测量。本文的目的是发展有效的技术来分离多模态兰姆波信号，实现准确的损伤定位。窄带兰姆波由中心频率为150 kHz的激励信号产生。利用基本的对称和反对称模式。提出了自适应多项式线调频小波变换（CT）对兰姆波信号进行分解和模式识别。然后，利用瞬时频率特性提取时间信息。从而获得飞行时间，并可以计算损伤位置。重构误差被定义为量化重构信号与接收信号之间的差异。仿真和实验得到的重建误差分别为0.1631和0.2875。采用变化的缺陷位置来获得TOF估计。结果表明，该方法优于CT和互相关，特别是对于较长的传播距离，色散效应是明显的。在考虑缺陷和边界反射的实验中，两种兰姆波模式对共线缺陷的定位误差分别为2.51%和3.04%。与平滑伪维格纳维尔分布和CT相比，该方法在模式识别和定位精度方面具有上级性能。
Ultrasonic Lamb wave testing allows health monitoring for plate structures and has been extensively applied in the modern industry. To obtain the location and further form the damage imaging, the time of flight (TOF) is a pivotal parameter. However, the dispersive and multimodal nature of the Lamb wave obstructs the accurate measurement of TOF. The objective of this article is to develop efficient techniques to separate multimodal Lamb wave signals and accomplish accurate damage localization. The narrowband Lamb wave is generated by the excitation signal with a center frequency of 150 kHz. The fundamental symmetric and antisymmetric modes are exploited. The adaptive polynomial chirplet transform (CT) is proposed to decompose the Lamb wave signals and identify the modes. Then, the instantaneous frequency characteristics are utilized to extract time information. Thus, the TOF is obtained and damage location can be calculated. The reconstruction error is defined to quantitate the difference between the reconstructed signal and the received signal. The obtained reconstruction errors from the simulation and experiment are 0.1631 and 0.2875, respectively. The varied defect location is adopted to obtain the TOF estimation. The results show that the proposed method outperforms the CT and cross correlation, especially for the longer propagation distances where the dispersion effect is distinct. For experiments considering the defect and boundary reflection, the localization errors of the collinear defect are 2.51% and 3.04% for the two Lamb wave modes. In comparison with smoothed-pseudo-Wigner–Ville distribution and CT, the proposed method owns superior performance on mode identification and location accuracy.
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波形分离和图像融合可提高兰姆波检测分辨率
影响因子：
4.2
作者：
Liang Zeng;Ming Zhao;Jing Lin;Wentao Wu
通讯作者：
Wentao Wu
DOI：
10.4028/www.scientific.net/kem.167-168.152
发表时间：
1999-01-01
期刊：
DAMAS 99: DAMAGE ASSESSMENT OF STRUCTURES
影响因子：
--
作者：
Wilcox, PD;Dalton, RP;Cawley, P
通讯作者：
Cawley, P
DOI：
10.1109/tim.2014.2299528
发表时间：
2014-07-01
影响因子：
5.6
作者：
Hosseinabadi, Hossein Zamani;Nazari, Behzad;Sadri, Amir Reza
通讯作者：
Sadri, Amir Reza
DOI：
10.1177/10453890122145348
发表时间：
1999-06
影响因子：
2.7
作者：
P. Wilcox;M. Lowe;P. Cawley
通讯作者：
P. Wilcox;M. Lowe;P. Cawley
DOI：
10.1109/imtc.1999.776987
发表时间：
1999-05
期刊：
IMTC/99. Proceedings of the 16th IEEE Instrumentation and Measurement Technology Conference (Cat. No.99CH36309)
影响因子：
--
作者：
S. Legendre;D. Massicotte;J. Goyette;T. Bose
通讯作者：
S. Legendre;D. Massicotte;J. Goyette;T. Bose