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Very High Cycle Fatigue for single phase ductile materials: slip band appearance criterion

hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorPHUNG, Ngoc Lam
hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorMARTI, Nicolas
hal.structure.identifierLaboratoire de Mécanique et Génie Civil [LMGC]
hal.structure.identifierThermoMécanique des Matériaux [ThM2]
dc.contributor.authorBLANCHE, ANTOINE
hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorRANC, Nicolas
hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorFAVIER, Véronique
hal.structure.identifierLaboratoire de Mécanique et Génie Civil [LMGC]
hal.structure.identifierThermoMécanique des Matériaux [ThM2]
dc.contributor.authorCHRYSOCHOOS, André
dc.contributor.authorSAINTIER, Nicolas
hal.structure.identifierLaboratoire des Sciences des Procédés et des Matériaux [LSPM]
dc.contributor.authorGREGORI, Fabienne
hal.structure.identifierLaboratoire des Sciences des Procédés et des Matériaux [LSPM]
dc.contributor.authorBACROIX, Brigitte
dc.contributor.authorTHOQUENNE, Guillaume
dc.date.accessioned2021-05-14T09:54:41Z
dc.date.available2021-05-14T09:54:41Z
dc.date.issued2013
dc.date.conference2013
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77634
dc.description.abstractEnThe DISFAT project is a French project financially supported by the French National Agency for Research (ANR). It aims at a deeper understanding of mechanisms leading to crack initiation in metals and alloys under Very High Cycle Fatigue loading (VHCF). The VHCF regime is associated with stress magnitudes lower than the conventional fatigue limit and as a result, numbers of cycles higher than 109. Tests were carried out using an ultrasonic technique at loading frequency of 20 kHz. In the case of pure copper polycrystals, we previously showed that slip band (SB) activity and intrinsic dissipation were closely related.Dissipation and slip band amount increased with the number of cycles. At very small stress amplitudes, no slip band appeared at the specimen surface up to 108 cycles but the material was found to dissipate energy. These results revealed that the material never reached a steady state and so could break at higher number of cycles. In this paper, the morphology and the location of slip bands were characterized. Different types of slip bands depending on the stress amplitudes appeared at the specimen surface. The stress amplitude required to show the first slip bands decreases with the number of cycles. It is twice lower than the stress amplitude required to break the specimen for the same number of cycles. At the smallest stress amplitudes, slip bands were mostly found at twin boundaries. Quasi 3D finite element simulations taking into account the polycrystalline nature of the material emphasized the key role of the elastic anisotropy in slip band initiation. A criterion for slip band appearance was finally proposed.
dc.language.isoen
dc.publisherElsevier
dc.subject.enVery high cycle fatigue
dc.subject.enslip band
dc.subject.enanisotropic elastic crystallinne
dc.subject.enfinite element
dc.title.enVery High Cycle Fatigue for single phase ductile materials: slip band appearance criterion
dc.typeCommunication dans un congrès avec actes
dc.identifier.doi10.1016/j.proeng.2013.12.113
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des structures [physics.class-ph]
bordeaux.page616-625
bordeaux.volume66
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryFR
bordeaux.title.proceedingFatigue Design Conference
bordeaux.conference.citySENLIS
bordeaux.peerReviewedoui
hal.identifierhal-01243216
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01243216v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2013&rft.volume=66&rft.spage=616-625&rft.epage=616-625&rft.au=PHUNG,%20Ngoc%20Lam&MARTI,%20Nicolas&BLANCHE,%20ANTOINE&RANC,%20Nicolas&FAVIER,%20V%C3%A9ronique&rft.genre=proceeding


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