Role of machining defects and residual stress on the AISI 304 fatigue crack nucleation

Dépôt DSpace/Manakin

Afficher la notice abrégée YAHYAOUI, Houda
ensam.hal.laboratories BEN MOUSSA, N
ensam.hal.laboratories BRAHAM, Chedly
  86289 Procédés et Ingénierie en Mécanique et Matériaux [Paris] [PIMM] SIDHOM, H
ensam.hal.laboratories BEN FREDJ, N 2015-09-03T10:18:33Z 2015-09-03T10:18:33Z 2015-04 2015-07-23T14:58:01Z
dc.description.abstract Machining defects as rebuilt material and dislodgement were often induced by cutting of difficult to machining AISI 304 stainless steel. Their density increases with a decreasing of cutting speed. The effect of these defects on surface topography and residual stress was evaluated by roughness and X-ray diffraction measurements coupled with numerical simulation. The role of the rebuilt material on the distribution of fatigue crack nucleation sites was investigated by scanning electron microscope examination of post fatigue samples loaded at different imposed strain amplitudes. The association of machining defects and fatigue crack nucleation sites was attributed to the contribution of additional tensile residual stresses induced by rebuilt material rather than local stress concentration. Moreover, the fatigue crack coalescence is promoted by increasing the rebuilt material density. When the machining defect density increases from 5 to 60 particles/mm2, the fatigue life decreases from -22% to -65% with respect to the electropolished surface. © 2014 Wiley Publishing Ltd. en
dc.language.iso en
dc.publisher Wiley
dc.rights Post-print
dc.subject stainless steel en
dc.subject machining defects en
dc.subject residual stress en
dc.subject fatigue life en
dc.subject crack distribution. en
dc.title Role of machining defects and residual stress on the AISI 304 fatigue crack nucleation en hal-01192691 *
ensam.hal.status accept *
dc.identifier.doi 10.1111/ffe.12243
dc.typdoc Articles dans des revues avec comité de lecture
dc.localisation Centre de Paris
dc.subject.hal Sciences de l'ingénieur: Matériaux
dc.subject.hal Sciences de l'ingénieur: Mécanique
ensam.workflow.submissionConsumer updateMetadata *
ensam.audience Internationale 420-433
ensam.journal Fatigue and Fracture of Engineering Materials and Structures
ensam.hal.faultCode {"meta":{"peerReviewing":{"isEmpty":"Vous devez remplir ce champ"}}}
ensam.volume 38

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