Analysis of plastic strain localization by a combination of the speckle interferometry with the bulge test

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dc.contributor.authorMontay, G.
dc.contributor.authorFrancois, M.
dc.contributor.authorTourneix, M.
dc.contributor.authorGuelorget, B.
dc.contributor.authorVial Edwards, C.
dc.contributor.authorLira, I.
dc.date.accessioned2024-01-10T13:11:03Z
dc.date.available2024-01-10T13:11:03Z
dc.date.issued2007
dc.description.abstractThe process of localization of strains, diffuse and localized necking, up to fracture in equi-biaxial loading was analyzed through the images obtained by electronic speckle pattern interferometry (ESPI). The problem of localization is important in the sheet metal forming processes. The ESPI technique is used to have a better resolution on the measured strains (10(-5)) than other technique such as the image correlation (10(-2), 10(-3)). The bulge test is currently used to determine the mechanical properties of materials by measuring the deformation that occurs in response to the application of a controlled pressure. This test is used to determine the mechanical properties of sheet metals submitted to an equi-biaxial loading path, the strains at failure are used as data to determine forming limit diagrams (FLDs).
dc.description.abstractThe aim of this study is to detect the localization of plastic strain (diffuse and localized necking) during the bulge test combined with a common speckle interferometer. This paper describes an original technique to detect the localization using the strain rate at different positions on the sample.
dc.description.abstractThe main originality of this work is the application of an optical interferometer to determine the field of plastic strain increments and strain rates in the region of the top of the specimen, at various stages of global strains. (C) 2006 Elsevier Ltd. All rights reserved.
dc.fechaingreso.objetodigital03-04-2024
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.optlaseng.2006.03.012
dc.identifier.eissn1873-0302
dc.identifier.issn0143-8166
dc.identifier.urihttps://doi.org/10.1016/j.optlaseng.2006.03.012
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77985
dc.identifier.wosidWOS:000242269500029
dc.information.autorucIngeniería;Lira I;S/I;99450
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final228
dc.pagina.inicio222
dc.publisherELSEVIER SCI LTD
dc.revistaOPTICS AND LASERS IN ENGINEERING
dc.rightsacceso restringido
dc.subjectlocalization
dc.subjectplastic strain
dc.subjectstrain rate
dc.subjectdiffuse and localized necking
dc.subjectESPI
dc.subjectbulge test
dc.subjectSHEET METALS
dc.subjectINSTABILITY
dc.subjectNECKING
dc.subjectSTRESS
dc.subjectLIMITS
dc.titleAnalysis of plastic strain localization by a combination of the speckle interferometry with the bulge test
dc.typeartículo
dc.volumen45
sipa.codpersvinculados99450
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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