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Title: Ultrasonic Wave Generation by Lasers on Different Metal Surfaces

Abstract

Ultrasonic wave generation by short pulsed laser is revisited in this paper with new experimental work. The generation laser pulse is fiber delivered and a virtually uniform intensity spot is obtained. Ultrasonic pulse strength versus laser pulse energy is obtained for various aluminum and steel surface conditions. To have a better reproducibility, the sample moves after each measurement in order to have a fresh surface for each laser shot. Results show a strong effect of the surface condition. Special attention is paid to the frequency dependence of the generated ultrasonic waves for different laser intensities. The problem of the optimum spot size for a given laser pulse energy is also discussed.

Authors:
;  [1]
  1. Industrial Materials Institute, National Research Council of Canada, Boucherville, Quebec, J4B 6Y4 (Canada)
Publication Date:
OSTI Identifier:
21054960
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 894; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Portland, OR (United States), 30 Jul - 4 Aug 2006; Other Information: DOI: 10.1063/1.2717975; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM; FIBERS; FREQUENCY DEPENDENCE; LASER RADIATION; PULSES; STEELS; SURFACES; ULTRASONIC TESTING; ULTRASONIC WAVES

Citation Formats

Kruger, S. E., and Lord, M.. Ultrasonic Wave Generation by Lasers on Different Metal Surfaces. United States: N. p., 2007. Web. doi:10.1063/1.2717975.
Kruger, S. E., & Lord, M.. Ultrasonic Wave Generation by Lasers on Different Metal Surfaces. United States. doi:10.1063/1.2717975.
Kruger, S. E., and Lord, M.. Wed . "Ultrasonic Wave Generation by Lasers on Different Metal Surfaces". United States. doi:10.1063/1.2717975.
@article{osti_21054960,
title = {Ultrasonic Wave Generation by Lasers on Different Metal Surfaces},
author = {Kruger, S. E. and Lord, M.},
abstractNote = {Ultrasonic wave generation by short pulsed laser is revisited in this paper with new experimental work. The generation laser pulse is fiber delivered and a virtually uniform intensity spot is obtained. Ultrasonic pulse strength versus laser pulse energy is obtained for various aluminum and steel surface conditions. To have a better reproducibility, the sample moves after each measurement in order to have a fresh surface for each laser shot. Results show a strong effect of the surface condition. Special attention is paid to the frequency dependence of the generated ultrasonic waves for different laser intensities. The problem of the optimum spot size for a given laser pulse energy is also discussed.},
doi = {10.1063/1.2717975},
journal = {AIP Conference Proceedings},
number = 1,
volume = 894,
place = {United States},
year = {Wed Mar 21 00:00:00 EDT 2007},
month = {Wed Mar 21 00:00:00 EDT 2007}
}