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Very high cycle fatigue for single phase ductile materials: microplasticity and energy dissipation

hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorPHUNG, Ngoc-Lam
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.identifierThermoMécanique des Matériaux [ThM2]
dc.contributor.authorCHRYSOCHOOS, André
hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
hal.structure.identifierLaboratoire des Sciences des Procédés et des Matériaux [LSPM]
dc.contributor.authorMARTI, Nicolas
dc.contributor.authorSAINTIER, Nicolas
hal.structure.identifierLaboratoire Energétique Mécanique Electromagnétisme [LEME]
dc.contributor.authorWANG, Chow
hal.structure.identifierLaboratoire Energétique Mécanique Electromagnétisme [LEME]
dc.contributor.authorWAGNER, Danièle
hal.structure.identifierLaboratoire Energétique Mécanique Electromagnétisme [LEME]
dc.contributor.authorBATHIAS, Claude
hal.structure.identifierLaboratoire des Sciences des Procédés et des Matériaux [LSPM]
dc.contributor.authorGRÉGORI, Fabienne
hal.structure.identifierLaboratoire des Sciences des Procédés et des Matériaux [LSPM]
dc.contributor.authorBACROIX, Brigitte
hal.structure.identifierFriedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg [FAU]
dc.contributor.authorMUGHRABI, Haël
hal.structure.identifierCentre Technique des Industries Mécaniques [CETIM]
dc.contributor.authorTHOQUENNE, Guillaume
dc.date.accessioned2021-05-14T10:03:19Z
dc.date.available2021-05-14T10:03:19Z
dc.date.issued2013
dc.date.conference2013
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78387
dc.description.abstractEnThe DISFAT project is a ongoing French project financially supported by the French National Agency ANR. It aims at a deeper understanding of mechanisms leading to crack initiation in ductile metals in Very High Cycle Fatigue (VHCF). The VHCF regime is associated with stress amplitudes lower than the conventional fatigue limit and numbers of cycles higher than 109. Tests were conducted using an ultrasonic technique at loading frequency of 20 kHz. The mechanisms leading to crack initiation express via slip bands at the specimen surface and self-heating due to intrinsic dissipation. Thermal maps were used to estimate the mean dissipation and its change with number of cycles and stress amplitudes in case of pure copper polycrystals. At the same time, the surface relief changes due to plasticity were characterized using optical and scanning electronic microscopes. A good correlation was found between slip band initiation and dissipation. Dissipation and slip band amount always increased over the number of cycles. At very small stress amplitudes, no slip band appeared up to 108 cycles but the material was found to dissipate energy. These results reveal that the material never reached a steady state. Therefore it could break at higher number of cycles.
dc.language.isoen
dc.source.titleProceedings of the 13th International Conference on Fracture
dc.subject.encopper
dc.subject.enself-heating
dc.subject.enslip bands
dc.subject.enIR thermography
dc.subject.enultrasonic fatigue
dc.title.enVery high cycle fatigue for single phase ductile materials: microplasticity and energy dissipation
dc.typeCommunication dans un congrès avec actes
dc.subject.halSciences de l'ingénieur [physics]/Matériaux
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des matériaux [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des solides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des solides [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Thermique [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Thermique [physics.class-ph]
bordeaux.page9 p.
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.countryCN
bordeaux.title.proceeding13th International Conference on Fracture
bordeaux.conference.cityPékin
bordeaux.peerReviewedoui
hal.identifierhal-00859814
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00859814v1
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