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Laser generation of convergent acoustic waves and applications to materials evaluation

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1109/ULTSYM.1986.198792
AuteurRechercher : 1; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada
FormatTexte, Article
ConférenceIEEE 1986 Ultrasonics Symposium, Nov. 11-17, 1986, Williamsburg, VA
Sujetacoustic waves; optical materials; acoustic materials; surface acoustic waves; acoustic signal detection; surface emitting lasers; thermoelasticity; laser theory, inspection; optical pulse generation
Résumé
A converging-wave technique for laser generation and detection of focused acoustic waves is described together with a number of applications to the nondestructive testing and characterization of industrial materials. An annular-shaped wave is produced by irradiating the inspected material with a laser beam focused through a suitable combination of spherical and conical lenses. The ultrasonic pulse reaches a relatively high amplitude in the center of convergence, where it is probed by a noncontact interferometric optical sensor. Applications to the ultrasonic characterization of ceramic materials, coating thickness evaluation, detection of delaminations in layered materials as well as crack inspection are described.
Date de publication
Maison d’éditionIEEE
Dans
  • IEEE 1986 Ultrasonics Symposium : 515–526.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCCNRC 26653
NRC-IGM86-404-434
Numéro NPARC23004068
Exporter la noticeExporter en format RIS
Signaler une correctionSignaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrementa95f2ce6-05bc-4f5b-a43a-2222106c1b31
Enregistrement créé2018-09-25
Enregistrement modifié2020-03-17
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