Fractographic evaluation of welded joints of PPS/glass fiber thermoplastic composites

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dc.contributor.authorMiranda Barbosa, Lorena Cristina
dc.contributor.authorBrejdo de Souza, Samia Danuta [UNESP]
dc.contributor.authorBotelho, Edson Cocchieri [UNESP]
dc.contributor.authorCandidoa, Geraldo Mauricio
dc.contributor.authorRezende, Mirabel Cerqueira
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T01:23:56Z
dc.date.available2019-10-06T01:23:56Z
dc.date.issued2019-08-01
dc.description.abstractJoints obtained by resistance welding of polyphenylene sulphide (PPS) laminates reinforced with bidirectional glass fiber (GF) fabrics were investigated by fractographic analyses. The welded joints were tested under lap shear loading at room temperature. The fracture surfaces were analyzed by scanning electron microscopy (SEM) technique. Electric resistance welding technique uses the matrix flow property, when the thermoplastic is heated above the softening temperature (for amorphous polymers) or above the melting temperature (for semicrystalline polymers), to promote the welding between the laminates. Fractographic aspects of the studied fracture surfaces show that the interfacial adhesion of matrix/heating element was efficient, with the presence of intralaminar and interfacial failures. The intralaminar failure was predominant in laminates with higher values of shear strength (9.6 MPa). On the other hand, interfacial failure was predominant in laminates with lower values of shear strength (1.9 MPa). The mechanical performance measured for the welded joints was attributed to the polymer chains interdiffusion mechanism in the welding region as well as to the good polymer anchoring in the mesh of heating element. The fractographic analyses performed proved to be an adequate tool because provide information to evaluate the quality of welding process of thermoplastic composites.en
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista Julio de Mesquites Filho, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio de Mesquites Filho, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/13214-9
dc.description.sponsorshipIdFAPESP: 2017/16970-0
dc.description.sponsorshipIdCNPq: 150697/2014-7
dc.description.sponsorshipIdCNPq: 303224/2016-9
dc.description.sponsorshipIdCNPq: 303287/2013-6
dc.format.extent60-68
dc.identifierhttp://dx.doi.org/10.1016/j.engfailanal.2019.04.032
dc.identifier.citationEngineering Failure Analysis. Oxford: Pergamon-elsevier Science Ltd, v. 102, p. 60-68, 2019.
dc.identifier.doi10.1016/j.engfailanal.2019.04.032
dc.identifier.issn1350-6307
dc.identifier.lattes4378078337343660
dc.identifier.orcid0000-0001-8338-4879
dc.identifier.urihttp://hdl.handle.net/11449/186747
dc.identifier.wosWOS:000467804800006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofEngineering Failure Analysis
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectFractographic analysis
dc.subjectWelded joints
dc.subjectPPS/glass fiber
dc.subjectThermoplastic composite
dc.subjectFracture surface
dc.titleFractographic evaluation of welded joints of PPS/glass fiber thermoplastic compositesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes4378078337343660[3]
unesp.author.orcid0000-0002-5108-0288[1]
unesp.author.orcid0000-0001-8338-4879[3]

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