Defect detection by surface acoustic waves generated by a multiple beam laser

Abstract : Laser-induced Surface Acoustic Wave (SAW) pulses of large amplitude have been launched on the surface of metallic samples. The non contact generation process involves a rectilinear set of photothermal sources equivalent to a phased array of ultrasonic transducers. Line and point source arrays created by a 16-beam YAG laser have been implemented. Two sets of experiments are presented: i) non destructive testing of thin surface breaking slots with giant SAW pulses launched by the line source array, ii) sectorial beam scanning of the surface by SAW generated by the point source array.
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Communication dans un congrès
1995 IEEE Ultrasonics Symposium. An International Symposium, Nov 1995, Seattle, France. IEEE, Proceedings IEEE Ultrasonics Symposium, pp.821-824, 〈https://ieeexplore.ieee.org/abstract/document/495692/〉. 〈10.1109/ULTSYM.1995.495692〉
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https://hal.archives-ouvertes.fr/hal-01843218
Contributeur : Catherine Chenu <>
Soumis le : mercredi 18 juillet 2018 - 16:18:27
Dernière modification le : vendredi 4 janvier 2019 - 17:33:27

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C. Chenu, D. Royer, M. Fink. Defect detection by surface acoustic waves generated by a multiple beam laser. 1995 IEEE Ultrasonics Symposium. An International Symposium, Nov 1995, Seattle, France. IEEE, Proceedings IEEE Ultrasonics Symposium, pp.821-824, 〈https://ieeexplore.ieee.org/abstract/document/495692/〉. 〈10.1109/ULTSYM.1995.495692〉. 〈hal-01843218〉

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