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Laser-ultrasound-based non-destructive testing: Optimization of the thermoelastic source

Abstract : Laser-ultrasound-based non-destructive testing (NDT) applications usually use circular or linear thermoelastic sources. This paper studies two more complex sources and presents their specific advantages. The first thermoelastic source is a regular line array, whereas the second one is a chirped line array. The surface acoustic waves generated on an aluminum sample by these two thermoelastic sources are detected by an interferometric optical probe, the measurements showing a good agreement with theoretical expectations. Finally, the potentialities of these two sources in NDT applications are described.
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https://hal-uphf.archives-ouvertes.fr/hal-03776123
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Submitted on : Tuesday, September 13, 2022 - 1:32:15 PM
Last modification on : Wednesday, September 14, 2022 - 3:37:50 AM

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Frédéric Faëse, Frédéric Jenot, Mohammadi Ouaftouh, Marc Duquennoy. Laser-ultrasound-based non-destructive testing: Optimization of the thermoelastic source. Measurement Science and Technology, IOP Publishing, 2015, 26 (8), 5 p. ⟨10.1088/0957-0233/26/8/085205⟩. ⟨hal-03776123⟩

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