| Téléchargement | - Voir le manuscrit accepté : Laser-generated surface skimming longitudinal wave measurement of residual stress in shot peened samples (PDF, 1.0 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1063/1.2184691 |
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| Auteur | Rechercher : Bescond, C.1; Rechercher : Lévesque, D.1; Rechercher : Lord, M.1; Rechercher : Monchalin, J.-P.1; Rechercher : Forgues, S. |
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| Affiliation | - Conseil national de recherches du Canada. Institut des matériaux industriels du CNRC
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| Format | Texte, Article |
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| Conférence | 32nd Annual Review of Progress in Quantitative Nondestructive Evaluation, July 31-August 5, 2005, Brunswick, Maine, USA |
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| Sujet | Laser-ultrasonics; residual stress; shot peening; surface skimming longitudinal wave; SAW |
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| Résumé | Shot peening is a surface enhancement technique that produces a compressive residual stress in a thin surface layer to extend the fatigue life and prevent stress corrosion cracking of structural components. A laser-ultrasonic non-contact technique is used for determining residual stresses produced by shot peening. The method is essentially based on the acoustoelastic effect of the laser-generated surface skimming longitudinal wave (LSSLW) propagating just below the surface. The LSSLW is found to be more sensitive to residual stress than the Rayleigh surface acoustic wave. When used in combination with the Rayleigh surface wave, this laser ultrasonic technique is shown to be quite effective and provides results in good agreement with x-ray data. Contributing factors such as surface roughness, crystallographic texture and dislocations have been examined and corrections for a satisfactory assessment of residual stress are proposed. |
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| Date de publication | 2006-03-06 |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 47919 |
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| Numéro NPARC | 18398999 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 60415423-51e2-42a4-a333-4b2829506491 |
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| Enregistrement créé | 2011-08-17 |
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| Enregistrement modifié | 2020-04-22 |
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