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Dynamic fracture in a semicrystalline biobased polymer: an analysis of the fracture surface

dc.rights.licenseopenen_US
dc.relation.isnodouble7049c6a0-5e11-4496-a13f-6c4ea7046fa9*
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorKOPP, Jean-Benoit
IDREF: 17687335X
hal.structure.identifierLaboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorGIRARDOT, Jeremie
IDREF: 180810375
dc.date.accessioned2021-04-07T14:09:55Z
dc.date.available2021-04-07T14:09:55Z
dc.date.issued2020-09-11
dc.identifier.issn0376-9429en_US
dc.identifier.urioai:crossref.org:10.1007/s10704-020-00482-y
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/26906
dc.description.abstractEnThe fracture behaviour of a semi-crystalline bio-based polymer was studied. Dynamic fracture tests on strip band specimens were carried out. Fracture surfaces were observed at different scales by optical and electron microscopy to describe cracking scenarios. Crack initiation, propagation and arrest zones were described. Three distinct zones are highlighted in the initiation and propagation zone: a zone with conical markings, a mist zone and a hackle zone. The conical mark zone shows a variation in the size and density of the conical marks along the propagation path. This is synonymous with local speed variation. Microcracks at the origin of the conical marks in the initiation zone seem to develop from the nucleus of the spherulites. In the propagation zone with complex roughness, the direction of the microcracks and their cracking planes are highly variable. Their propagation directions are disturbed by the heterogeneities of the material. They branch or bifurcate at the level of the spherulites. In the arrest zone, the microcracks developed upstream continue to propagate in different directions. The surface created is increasingly smoother as the energy release rate decreases. It is shown that the local velocity of the crack varies in contrast to the macroscopic speed. A specific setup allowing to estimate the minimum fracture energy of the material in order to maintain the rapid propagation of the crack is proposed for materials with antagonistic behaviour: ductile at initiation and brittle in propagation.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enDynamic fracture
dc.subject.enRapid crack propagation
dc.subject.enFracture surface analysis
dc.subject.enSemi-crystalline
dc.subject.enPolymer
dc.title.enDynamic fracture in a semicrystalline biobased polymer: an analysis of the fracture surface
dc.typeArticle de revueen_US
dc.identifier.doi10.1007/s10704-020-00482-yen_US
dc.subject.halSciences de l'ingénieur [physics]/Matériauxen_US
bordeaux.journalInternational Journal of Fractureen_US
bordeaux.page121-132en_US
bordeaux.volume226en_US
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295en_US
bordeaux.issue1en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux INPen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionArts et Métiersen_US
bordeaux.institutionINRAE
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
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