Numerical Voids Detection in Bonded Metal/Composite Assemblies Using Acousto-Ultrasonic Method

Applied Sciences

卷:12

Nathalie Godin¹  Aurélien Doitrand¹  Jialiang Guo¹  Laurent Gaillet²  Sylvain Chataigner²  Cheikh Sarr² 

[1] INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, France;

[2] Laboratoire Structures Métalliques et à Câbles (SMC), University Gustave Eiffel, IFSTTAR, SMC, MAST, Route de Bouaye, 44341 Bouguenais, France;

关键词: acousto-ultrasonic;    acoustic emission;    bonded assemblies;    defects;    FEM model;   

DOI  :  10.3390/app12094153

来源: DOAJ

【 摘 要 】

This research focuses on the application of an acousto-ultrasonics (AU) technique, a combination of ultrasonic characterization and acoustic emission, to nondestructively detect defects such as voids in bonded metal/composite assemblies. Computational methods are established to examine the effects of voids on the collected signal. The position of the receiver sensor with respect to the defect is also investigated. Given a specific structure and type of actuation signal, the sensor location and probability of detection can be enhanced by the model developed in this work. The defect detection is optimal provided the receiver sensor is located around the epicenter of the defect. Moreover, this work highlights the importance of the choice of reception sensor.

【 授权许可】

Unknown