| DOI | Trouver le DOI : https://doi.org/10.1016/j.ndteint.2009.01.012 |
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| Auteur | Rechercher : Mabrouki, F.1; Rechercher : Thomas, Michael; Rechercher : Genest, M.1; Rechercher : Fahr, A.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut de recherche aérospatiale du CNRC
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| Format | Texte, Article |
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| Sujet | closed crack detection; vibrothermography; finite element modeling; frictional heating |
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| Résumé | This paper investigates vibrothermography for the detection of fatigue cracks in steel compact tension specimens using combined experimental and numerical analyses. First, a numerical modal analysis is carried out to predict the optimal excitation parameters. A coupled thermo-mechanical model is then built to simulate the thermographic inspection. The model predicts the detection of cracks as short as 0.1 mm that is also confirmed experimentally using a commercial infrared camera with a maximum error of 2.13% on the temperature distribution. The model reveals that the specimens’ temperature increases at the crack vicinity according to the excitation frequency and is modulated due to the nonlinearity induced by the crack. The model also shows that the stress at the crack tip is lower than the material's yield stress, which makes the test truly non-destructive. |
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| Date de publication | 2009-02-13 |
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| Maison d’édition | Elsevier |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | SMPL-2008-0123 |
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| Numéro NPARC | 8929022 |
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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 | 359f235b-19bc-4f00-a3f1-b5efc2ee321c |
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| Enregistrement créé | 2009-04-23 |
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| Enregistrement modifié | 2020-04-16 |
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