Non-contact ultrasonic waveforms in metals using laser generation and interferometric detection

DOI	Trouver le DOI : https://doi.org/10.1109/ULTSYM.1983.198249
Auteur	Rechercher : Hutchins, D. A.; Rechercher : Nadeau, F.¹
Affiliation	Conseil national de recherches du Canada
Format	Texte, Article
Conférence	1983 Ultrasonics Symposium, Oct. 31-Nov. 2, 1983, Atlanta, Georgia
Résumé	A range of ultrasonic waveforms have been generated in an aluminum plate by a Q-switched Nd: YAG laser. Displacements on the far side of the plate were detected on-epicentre by an interferometer with a resolution of 0.2 A and a bandwidth of 40 MHz. At optical power densities below the ablation threshold, the thermoelastic waveform was observed without signal averaging. At increased generating power densities the waveform was seen to be modified. In all cases, good agreement was seen with predictions of wave propagation theory. Studies were also undertaken for generation at modified surfaces.
Date de publication	1983-11-02
Maison d’édition	IEEE
Dans	1983 Ultrasonics Symposium : 1175–1177.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	CNRC 21374 NRC-IGM83-166-093
Numéro NPARC	23004034
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	12ff251a-27a6-4148-9593-bc867b21daed
Enregistrement créé	2018-09-18
Enregistrement modifié	2020-03-13