Laser-induced ultrasonic measurements for the detection and reconstruction of surface defects

Par Conseil national de recherches du Canada

Téléchargement	Voir la version finale : Laser-induced ultrasonic measurements for the detection and reconstruction of surface defects (PDF, 1.2 Mio)
DOI	Trouver le DOI : https://doi.org/10.1051/aacus/2021031
Auteur	Rechercher : Qian, Feiming; Rechercher : Xing, Guangzhen; Rechercher : Yang, Ping; Rechercher : Hu, Pengcheng; Rechercher : Zou, Limin; Rechercher : Koukoulas, Triantafillos¹
Affiliation	Conseil national de recherches du Canada. Centre de recherche en métrologie
Bailleur de fonds	Rechercher : Key Technologies Research and Development Program; Rechercher : National Natural Science Foundation of China; Rechercher : China Postdoctoral Science Foundation; Rechercher : China Postdoctoral Science Foundation; Rechercher : Natural Science Foundation of Heilongjiang Province of China
Format	Texte, Article
Description physique	7 p.
Sujet	laser-induced ultrasound; surface defects detection; full matrix capture; total focusing method
Résumé	Laser-induced ultrasonic measurement is a non-contact non-destructive technology that can be employed for the testing and assessment of surface defects. In order to improve the correct identification of defects, the full matrix capture (FMC) and total focusing method (TFM) are applied on the imaging process. FMC data includes A-scans resulting from the combination of all measurement axes defined by the sequential generation and detection of utilized laser beams in the system. In this paper, an aluminium block with four holes whose diameters range from 1 mm to 2.5 mm is assessed through B-scans, the synthetic aperture focusing technique (SAFT) and FMC/TFM. The results demonstrate that the FMC/TFM technology can significantly improve the imaging quality and signal-to-noise ratio (SNR). In addition, this method has higher lateral resolution and larger imaging range compared with traditional B-scans.
Date de publication	2021-08-31
Maison d’édition	EDP Open European Acoustics Association
Licence	Creative Commons, Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	Acta Acustica 5, 38 (31 août 2021).
Langue	anglais
Publications évaluées par des pairs	Oui
Identificateur	aacus210059
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	a9fb681d-f4b2-4949-b3bc-5e4d46b00b57
Enregistrement créé	2022-10-24
Enregistrement modifié	2022-10-24

Date de modification :: 2024-07-01