A0 Lamb Mode Tracking to Monitor Crack Evolution in Thin Aluminum Plates Using Acoustic Emission Sensors

被引：3

作者：

Dris, El Yamine ^{[1
,2
]}

Bentahar, Mourad ^{[3
]}

Drai, Redouane ^{[1
]}

El Mahi, Abderrahim ^{[3
]}

机构：

[1] Res Ctr Ind Technol CRTI, POB 64, Algiers 16014, Algeria

[2] Ecole Natl Polytech, 10 Ave Hassen Badi,POB 182, Algiers 16200, Algeria

[3] Le Mans Univ, Lab Acoust Univ Mans LAUM, UMR CNRS 6613, Inst Acoust,Grad Sch IA GS,CNRS, F-72085 Le Mans, France

来源：

APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 23期

关键词：

acoustic emission (AE); tensile test; AE events localization; lamb waves; continuous wavelet transform (CWT); extended Kalman filter (EKF); crack propagation; SOURCE LOCALIZATION; WAVELET TRANSFORM; COMPOSITE PANELS; IMPACT LOCATION; FRACTURE; FATIGUE; IDENTIFICATION; DEFORMATION; SURFACE; ALLOYS;

D O I：

10.3390/app122312112

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper presents a real time monitoring methodology to identify the location of acoustic emission (AE) sources generated by microcracks created within an aluminum plate when submitted to a tensile load. The real time detection of the AE hits was performed by means of a network of piezoelectric sensors distributed on the surface of the plate. The proposed localization approach is based on the combination of the time-frequency analysis of the detected AE hits with an extended Kalman filter (EKF). The spatial coordinates of the AE sources were determined by solving a set of nonlinear equations, where the extended Kalman filter is based on an iterative calculation. By considering the statistics related to the estimation of the coordinates' errors, results show that the proposed method is in agreement with the experimental observations related to the propagation of the crack when the aluminum plate is under load.

引用

页数：20

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