| Téléchargement | - Voir le manuscrit accepté : Neutron diffraction measurements of residual stresses around a crack tip developed under variable-amplitude fatigue loadings (PDF, 1.2 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1111/j.1460-2695.2010.01490.x |
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| Auteur | Rechercher : Lee, S. Y.; Rechercher : Rogge, R. B.1; Rechercher : Choo, H.; Rechercher : Liaw, P. K. |
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| Affiliation | - Conseil national de recherches du Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Sujet | crack tip; fatigue crack propagation; neutron diffraction; residual stress; variable-amplitude fatigue |
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| Résumé | The spatially resolved neutron-diffraction residual stress mappings were performed on five compact-tension (CT) specimens subjected to various variable-amplitude fatigue loadings (e.g. overload, underload and their mixed loads) during fatigue crack propagation. Three principal residual-stress components (i.e. longitudinal, transverse and normal stresses) were measured as a function of the distance from the crack tip along the crack-propagation direction. The shape of respective crack tips on the five CT specimens was examined using scanning electron microscope. The results show the distinct residual-stress fields near the crack tip and significant changes in the crack-tip geometry for five different loading cases. It is thought that the combined effects of the changes in the residual-stress state and crack-tip geometry seem to be a key factor to account for the observed transient crack-growth phenomena. |
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| Date de publication | 2010-12-01 |
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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 NPARC | 16945685 |
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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 | fbcc2de8-9555-4dd9-ae77-c093f3678842 |
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| Enregistrement créé | 2011-03-03 |
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| Enregistrement modifié | 2020-04-17 |
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