Effects of several TIG weld repairs on the axial fatigue strength of AISI 4130 aeronautical steel-welded joints

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dc.contributor.authorNascimento, M. P. [UNESP]
dc.contributor.authorVoorwald, Herman Jacobus Cornelis [UNESP]
dc.contributor.authorPayao Filho, J. da C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.date.accessioned2014-05-20T13:28:19Z
dc.date.available2014-05-20T13:28:19Z
dc.date.issued2012-03-01
dc.description.abstractWelded joints of airframes critical to the flight-safety are commonly repair welded during its operational live. In this study, the effect of up to three weld repairs by gas tungsten arc welding (GTAW) on the axial fatigue strength of AISI4130 steel used in an airframe critical to the flight-safety was investigated. The tests were performed on hot-rolled steel plate specimens, 0.89 mm thick, with load ratio R= 0.1, constant amplitude, at 20 Hz frequency and room temperature. The results obtained indicated that the axial fatigue strength decreased with the GTAW process itself, and with the subsequent repair cycles, as a consequence of microstructural and microhardness changes and of weld profile geometry factors, which induced high stress concentration at the weld toe.en
dc.description.affiliationUniv Estadual Paulista UNESP FEG, Dept Mat & Technol DMT, BR-12516410 São Paulo, Brazil
dc.description.affiliationUniv Fed Rio de Janeiro, Dept Met & Mat Engn PEMM COPPE UFRJ, Ctr Tecnol, Ilha Fundao, BR-21941972 Rio de Janeiro, RJ, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP FEG, Dept Mat & Technol DMT, BR-12516410 São Paulo, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.description.sponsorshipIdFAPESP: 99/11948-6
dc.format.extent191-204
dc.identifierhttp://dx.doi.org/10.1111/j.1460-2695.2011.01606.x
dc.identifier.citationFatigue & Fracture of Engineering Materials & Structures. Hoboken: Wiley-blackwell, v. 35, n. 3, p. 191-204, 2012.
dc.identifier.doi10.1111/j.1460-2695.2011.01606.x
dc.identifier.issn8756-758X
dc.identifier.lattes3511534795805776
dc.identifier.urihttp://hdl.handle.net/11449/9426
dc.identifier.wosWOS:000300765800001
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofFatigue & Fracture of Engineering Materials & Structures
dc.relation.ispartofjcr2.533
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectGTAWen
dc.subjectheat-affected zoneen
dc.subjecthigh strength low alloy steelen
dc.subjectmicrostructureen
dc.subjectrepair weldingen
dc.subjectweld metalen
dc.subjectweld toe notchen
dc.titleEffects of several TIG weld repairs on the axial fatigue strength of AISI 4130 aeronautical steel-welded jointsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes3511534795805776
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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