基于 WVD/ATDM 的铝合金板孔损伤位置与区域识别

中国民航大学学报 ›› 2022, Vol. 40 ›› Issue (1): 53-59.

基于 WVD/ATDM 的铝合金板孔损伤位置与区域识别

徐建新，宋旭东，武耀罡

（中国民航大学航空工程学院, 天津 300300）

收稿日期:2021-03-04 修回日期:2021-03-04 接受日期:2021-01-08 出版日期:2022-02-22 发布日期:2022-03-17
作者简介:徐建新（1967—），男，江苏徐州人，教授，博士，研究方向为复合材料结构力学。

Recognition of the location and area of hole damage in aluminum alloy plate based on WVD/ATDM

XU Jianxin, SONG Xudong, WU Yaogang

（College of Aeronautical Engineering, CAUC, Tianjin 300300, China）

Received:2021-03-04 Revised:2021-03-04 Accepted:2021-01-08 Online:2022-02-22 Published:2022-03-17

摘要/Abstract

摘要： 为识别铝合金板孔损伤位置及区域，以 Lamb 波为研究基础，提出基于魏格纳-威利分布（WVD，WignerVille distribution）和到达时间差值法（ATDM，arrival time difference method）的损伤识别技术。首先，采集实验铝合金板健康和有损模型的 Lamb 信号，对其差值信号进行 WVD 分析，准确提取损伤反射信号到达时间；其次，通过 ATDM 建立各传感器间的距离差值关系，确定孔损伤位置中心并预测最大损伤半径，从而实现对孔损伤关键指标的识别；最后，通过数值模拟进一步验证该方法，结果表明，基于 WVD/ATDM 的损伤识别技术不仅能准确识别出孔损伤位置，而且能够有效地识别损伤区域面积。

关键词: 铝合金板, Lamb 波, WVD（Wigner-Ville distribution）/ATDM（arrival time difference method）方法, 孔损伤, 位置识别, 区域识别

Abstract: In order to recognize the location and area of the hole damage in the aluminum alloy plate, a damage identification technology based on Wigner-Ville distribution(WVD)/arrival time difference method(ATDM) is proposed, which uses Lamb wave as the research basis. The difference signals of Lamb waves, collected from the healthy and damaged aluminum alloy plate in experiment, are analyzed by WVD, and the arrival time of damage reflection signal is accurately extracted. The relationship of distance difference between sensors is established through ATDM, and the location center of hole damage is determined and the maximum damage radius is predicted, so as to identify the key indicators of hole damage. At the same time, the method is further verified by numerical simulation. The results show that the damage identification technology based on WVD/ATDM can not only accurately locate the hole damage, but also effectively identify the damage area.

Key words: aluminum alloy plate, Lamb wave, Wigner-Ville distribution(WVD)/arrival time difference method(ATDM), hole damage, location recognition, area recognition

中图分类号:

V267.2
TB553

徐建新, 宋旭东, 武耀罡. 基于 WVD/ATDM 的铝合金板孔损伤位置与区域识别[J]. 中国民航大学学报, 2022, 40(1): 53-59.

XU Jianxin, SONG Xudong, WU Yaogang. Recognition of the location and area of hole damage in aluminum alloy plate based on WVD/ATDM [J]. Journal of Civil Aviation University of China, 2022, 40(1): 53-59.

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