Afficher la notice abrégée

Time dependent voiding mechanisms in polyamide 6 submitted to high stress triaxiality : experimental characterisation and finite element modelling

hal.structure.identifierCentre des Matériaux [CDM]
dc.contributor.authorSELLES, Nathan
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorKING, Andrew
hal.structure.identifierCentre des Matériaux [CDM]
dc.contributor.authorPROUDHON, Henry
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorSAINTIER, Nicolas
hal.structure.identifierCentre des Matériaux [CDM]
dc.contributor.authorLAIARINANDRASANA, Lucien
dc.date.accessioned2021-05-14T09:46:22Z
dc.date.available2021-05-14T09:46:22Z
dc.date.issued2018-11
dc.identifier.issn1385-2000
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77000
dc.description.abstractEnDouble notched round bars made of semi-crystalline polymer polyamide 6 (PA6) were submitted to monotonic tensile and creep tests. The two notches had a root radius of 0.45 mm, which imposes a multiaxial stress state and a state of high triaxiality in the net (minimal) section of the specimens. Tests were carried out until the failure occurred from one of the notches. The other one, unbroken but deformed under steady strain rate or steady load, was inspected using the Synchrotron Radiation Computed Tomography (SRCT) technique. These 3D through thickness inspections allowed the study of microstructural evolution at the peak stress for the monotonic tensile test and at the beginning of the tertiary creep for the creep tests. Cavitation features were assessed with a micrometre resolution within the notched region. Spatial distributions of void volume fraction (Vf) and void morphology were studied. Voiding mechanisms were similar under steady strain rates and steady loads. The maximum values of Vf were located between the axis of revolution of the specimens and the notch surface and voids were considered as flat cylinders with a circular basis perpendicular to the loading direction. A model, based on porous plasticity, was used to simulate the mechanical response of this PA6 material under high stress triaxiality. Both macroscopic behaviour (loading curves) and voiding micro-mechanisms (radial distributions of void volume fraction) were accurately predicted using finite element simulations.
dc.language.isoen
dc.publisherSociety for Experimental Mechanics
dc.subject.enFinite elements
dc.subject.enCreep test
dc.subject.enSemi-crystalline polymer
dc.subject.enVoiding
dc.subject.enSynchrotron radiation computed tomography
dc.subject.enTensile test
dc.title.enTime dependent voiding mechanisms in polyamide 6 submitted to high stress triaxiality : experimental characterisation and finite element modelling
dc.typeArticle de revue
dc.identifier.doi10.1007/s11043-017-9360-1
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
bordeaux.journalMechanics of Time-Dependent Materials
bordeaux.page351-371
bordeaux.volume22
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.issue3
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01874758
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01874758v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Mechanics%20of%20Time-Dependent%20Materials&rft.date=2018-11&rft.volume=22&rft.issue=3&rft.spage=351-371&rft.epage=351-371&rft.eissn=1385-2000&rft.issn=1385-2000&rft.au=SELLES,%20Nathan&KING,%20Andrew&PROUDHON,%20Henry&SAINTIER,%20Nicolas&LAIARINANDRASANA,%20Lucien&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée