A guided wave dispersion compensation method based on compressed sensing

被引：109
作者：
Xu, Cai-bin [1 ]
Yang, Zhi-bo [1 ]
Chen, Xue-feng [1 ]
Tian, Shao-hua [2 ]
Xie, Yong [3 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Collaborat Innovat Ctr High End Mfg Equipment, Xian 710049, Shaanxi, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2018年 / 103卷
基金：
中国国家自然科学基金;
关键词：
Dispersion compensation; Guided wave; Compressed sensing; Sparse representation; Structural health monitoring; WAFER ACTIVE SENSORS; LAMB WAVES; BASIS PURSUIT; CONSTRAINED OPTIMIZATION; DEFECT DETECTION; TIME-REVERSAL; DAMAGE; IDENTIFICATION; EXCITATION; SIGNALS;
D O I：
10.1016/j.ymssp.2017.09.043
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The ultrasonic guided wave has emerged as a promising tool for structural health monitoring (SHM) and nondestructive testing (NDT) due to their capability to propagate over long distances with minimal loss and sensitivity to both surface and subsurface defects. The dispersion effect degrades the temporal and spatial resolution of guided waves. A novel ultrasonic guided wave processing method for both single mode and multi-mode guided waves dispersion compensation is proposed in this work based on compressed sensing, in which a dispersion signal dictionary is built by utilizing the dispersion curves of the guided wave modes in order to sparsely decompose the recorded dispersive guided waves. Dispersion-compensated guided waves are obtained by utilizing a non-dispersion signal dictionary and the results of sparse decomposition. Numerical simulations and experiments are implemented to verify the effectiveness of the developed method for both single mode and multi-mode guided waves. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：89 / 104
页数：16
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