作者：顾建祖, 毕秀祥

作者单位：江苏大学土木工程与力学学院, 江苏 镇江 212013

关键词：导波相控阵;波束形成;时间反转方法;频率-波数域;全域-局部检测

摘要：

为满足结构健康监测在线、实时性的要求，该文提出导波相控阵波束形成全域损伤定位及时反局部损伤量化方法。该方法使用一个混合检测系统，其包括一个用于产生导波的压电陶瓷换能器和用于拾取波场信息的非接触扫描式激光多普勒测振仪（SLDV）。由SLDV逐点扫描组成的相控阵阵列，基于导波相控阵波束的形成和成像算法定位薄板中的损伤位置。然后，将已定位的损伤区域作为目标区域，基于频率-波数（f-k）域时反成像方法对局部区域定量评估损伤。数值仿真和实验结果表明：所提方法能够快速定位损伤区域，并定量评估损伤大小。

Study on damage location and quantification using global phased array beamforming and situ time-reversal method based on guided wave
GU Jianzu, BI Xiuxiang
Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China
Abstract: In order to meet the structural health monitoring online and real-time requirement, a method of global damage localization with guided wave phased array beamforming and local damage quantization by time reversal is proposed. This approach uses a hybrid system consisting of one piezoelectric ceramic transducer that generated ultrasonic guided wave and the no-contact scanning laser doppler vibrometer (SLDV) for acquiring guided wave-field data. The phased array configured by the SLDV scan points one by one in order to inspect and locate the presence of damage in thin-plate based on guided wave beamforming and imaging method. Then the identified damage area is the target area, local regional quantitative assessment of damage is based on the imaging of time-reversal method in f-k domain. The numerical simulation and experimental results show that the proposed method can rapidly locate the damage area and evaluate the size of the damage quantitatively.
Keywords: guided-wave phased array;beamforming;time-reversal method;frequency-wavenumber domain;global-local testing
2019, 45(6):6-12  收稿日期: 2018-01-18;收到修改稿日期: 2018-03-14
基金项目: 国家自然科学基金国际重点合作项目（11520101001）
作者简介: 顾建祖(1961-),男,江苏常熟市人,副教授,硕士,研究方向为超声无损检测
参考文献
[1] HAJRYA R, MECHBAL N. Principal component analysis and perturbation theory-based robust damage detection of multifunctional aircraft structure[J]. Structural Health Monitoring, 2013, 12(3):263-277
[2] 田振华, 徐鸿, 李鸿源, 等. 基于单激发端多接收端压电阵列的板内损伤检测[J]. 中国机械工程, 2014, 25(22):3077-3080
[3] 罗斯. 固体中的超声波[M]. 北京:科学出版社, 2004:82-92.
[4] YU L, GIURGIUTIU V. In situ 2-D piezoelectric wafer active sensors arrays for guided wave damage detection[J]. Ultrasonics, 2008, 48(2):117-134
[5] CUC A, GIURGIUTIU V, JOSHI S, et al. Structural health monitoring with piezoelectric wafer active sensors for space applications[J]. AIAA journal, 2007, 45(12):2838-2850
[6] KIM D, PHILEN M. Guided wave beamsteering using MFC phased arrays for structural health monitoring:analysis and experiment[J]. Journal of Intelligent Material Systems and Structures, 2010, 21(10):1011-1024
[7] LELEUX A, MICHEAU P, CASTAINGS M. Long range detection of defects in composite plates using Lamb waves generated and detected by ultrasonic phased array probes[J]. Journal of Nondestructive Evaluation, 2013, 32(2):200-214
[8] 王志凌, 袁慎芳, 邱雷, 等. 基于压电超声相控阵方法的结构多损伤监测[J]. 振动、测试与诊断, 2014, 34(5):796-801
[9] 孙亚杰, 张永宏, 袁慎芳, 等. 无参考Lamb波相控阵结构损伤监测成像方法[J]. 复合材料学报, 2013, 30(6):264-269
[10] ING R K, FINK M. Time-reversed Lamb waves[J]. IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control, 1998, 45(4):1032-1043
[11] ING R K, FINK M. Time recompression of dispersive Lamb waves using a time reversal mirror-application to flaw detection in thin plates[C]//Proceedings of the IEEE Ultrasonics Symposium, 1996.
[12] LIN X, YUAN F G. Detection of multiple damages by prestack reverse-time migration[J]. AIAA journal, 2001, 39(11):2206-2215
[13] WANG L, YUAN F G. Damage identification in a composite plate using prestack reverse-time migration technique[J]. Structural health monitoring, 2005, 4(3):195-211
[14] ZHOU L, YUAN F G, MENG W. A pre-stack migration method for damage identification in composite structures[J]. Smart Structures and Systems, 2007, 3(4):439-454
[15] HE J, YUAN F G. Damage identification for composite structures using a cross-correlation reverse-time migration technique[J]. Structural Health Monitoring, 2015, 14(6):558-570
[16] HE J, YUAN F G. Lamb-wave-based two-dimensional areal scan damage imaging using reverse-time migration with a normalized zero-lag cross-correlation imaging condition[J]. Structural Health Monitoring, 2017, 16(4):444-457
[17] JOHNSON D H, DUDGEON D E. Array signal processing:concepts and techniques[M]. PTR Prentice Hall Englewood Cliffs, 1993.
[18] YU L, TIAN Z. Guided wave phased array beamforming and imaging in composite plates[J]. Ultrasonics, 2016, 68:43-53
[19] ZHU R, HUANG G, YUAN F. Fast damage imaging using the time-reversal technique in the frequency-wavenumber domain[J]. Smart Materials and Structures, 2013, 22(7):075028