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Analysis of geometrical defects in overhang fabrications in electron beam melting based on thermomechanical simulations and experimental validations

hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
hal.structure.identifierConception Produit Process [G-SCOP_CPP ]
dc.contributor.authorGHAOUI, Soukaina
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorLEDOUX, Yann
IDREF: 102217890
hal.structure.identifierConception Produit Process [G-SCOP_CPP ]
dc.contributor.authorVIGNAT, Frédéric
hal.structure.identifierConception Produit Process [G-SCOP_CPP ]
dc.contributor.authorMUSEAU, Matthieu
hal.structure.identifierConception Produit Process [G-SCOP_CPP ]
dc.contributor.authorVO, Thanh Hoang
hal.structure.identifierConception Produit Process [G-SCOP_CPP ]
dc.contributor.authorVILLENEUVE, François
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorBALLU, Alex
IDREF: 106013637
dc.date.accessioned2021-05-14T09:33:06Z
dc.date.available2021-05-14T09:33:06Z
dc.date.created2020-04-26
dc.date.issued2020-08-31
dc.identifier.issn2214-8604
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/76026
dc.description.abstractEnElectron Beam Melting is an innovative process for the production of massive parts with minimum support structures and negligible residual stress. However, some geometries, such as overhang volumes, still pose a challenge to manufacture and can result in non-negligible geometrical defects such as “side loss”. Based on thermomechanical simulations, the aim of this work is to understand the reasons for the appearance of this defect and its evolution throughout successive layer depositions. Simulation results indicate that side loss is due to the repetitive force applied by the new layers on the previous ones due to the fast shrinkage in the top of the part. In addition, both simulation and experimental analysis show an increase in the defect amplitude with increasing thickness of the overhang volume and its stabilization after the first millimeters of the overhang volume.
dc.description.sponsorshipMaîtrise géométrique des pièces produites par fabrication additive métallique - ANR-17-CE10-0004
dc.language.isoen
dc.publisherElsevier
dc.subject.enElectron beam melting
dc.subject.enOverhang geometry
dc.subject.enGeometrical defects
dc.subject.enThermomechanical simulation
dc.subject.enExperimental validation
dc.title.enAnalysis of geometrical defects in overhang fabrications in electron beam melting based on thermomechanical simulations and experimental validations
dc.typeArticle de revue
dc.identifier.doi10.1016/j.addma.2020.101557
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Génie mécanique [physics.class-ph]
bordeaux.journalAdditive Manufacturing
bordeaux.page101557
bordeaux.volume36
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.peerReviewedoui
hal.identifierhal-02945570
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02945570v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Additive%20Manufacturing&rft.date=2020-08-31&rft.volume=36&rft.spage=101557&rft.epage=101557&rft.eissn=2214-8604&rft.issn=2214-8604&rft.au=GHAOUI,%20Soukaina&LEDOUX,%20Yann&VIGNAT,%20Fr%C3%A9d%C3%A9ric&MUSEAU,%20Matthieu&VO,%20Thanh%20Hoang&rft.genre=article


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