THERMOELASTIC GRATING FOR NON-DESTRUCTIVE TESTING BY LASER ULTRASONICS - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

THERMOELASTIC GRATING FOR NON-DESTRUCTIVE TESTING BY LASER ULTRASONICS

Résumé

Ultrasonic Non-Destructive Testing (NDT) uses many types of sources mostly based on piezoelectric transducers. This paper focuses on the generation and detection of acoustic waves by Laser Ultrasonics which is a wellknown non-contact inspection method. More precisely, the main goal of this work is to analyze the interaction between a flaw and Rayleigh waves simultaneously excited by a grating of thermoelastic line sources. Experimentally, a pulsed Nd:YAG laser, combined with different optical devices is used for ultrasound excitation in an aluminum sample with a surface defect. Moreover, the normal displacement of Rayleigh waves is detected by a Mach-Zehnder type interferometer. The results obtained using different configurations are compared to determine the advantages of each of them for NDT. A finite element model also allows to confirm the interpretation of the complex phenomena studied.
Fichier principal
Vignette du fichier
Article_FA (4).pdf (4.45 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04342644 , version 1 (13-12-2023)

Identifiants

Citer

M Karam, Meriem Chrifi Alaoui, Frédéric Jenot, M Baher, Rabih Tauk, et al.. THERMOELASTIC GRATING FOR NON-DESTRUCTIVE TESTING BY LASER ULTRASONICS. Forum Acusticum, Sep 2023, TURIN, Italy. ⟨10.61782/fa.2023.0370⟩. ⟨hal-04342644⟩
36 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More