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Fatigue Performance of Thin Laser Butt Welds in HSLA Steel

2021-09-22Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Outras Ciências Naturais
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorRiofrío, Patricio G.
dc.contributor.authorAntunes, Fernando
dc.contributor.authorFerreira, José
dc.contributor.authorBatista, António Castanhola
dc.contributor.authorCapela, Carlos
dc.date.accessioned2026-01-20T12:37:16Z
dc.date.available2026-01-20T12:37:16Z
dc.date.issued2021-09-22
dc.description.abstractThis work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the S-N curves of four welded series. The results showed acceptable fatigue strength although the welded series presented multiple-imperfections. The analysis of fatigue behavior at low stress levels through the stress-concentrating effect explained the influence of each factor on the S-N curves of the welded series. The fatigue limits of the welded series predicted through the stress-concentrating effect and by the relationship proposed by Murakami showed good agreement with the experimental results.eng
dc.description.sponsorshipThe authors acknowledge the support provided by the Universidad de las Fuerzas Armadas-ESPE for the scholarship and Mário da Costa Martins and Fernando Meireles of the Orthopedia Medica Company for laser welding manufacturing. This research is sponsored by FEDER funds through the program COMPETE–Programa Operacional Factores de Competitividade— and by national funds through FCT–Fundação para a Ciência e a Tecnologia–, under the project UIDB/00285/2020.
dc.identifier.citationRiofrío, P.G.; Antunes, F.; Ferreira, J.; Batista, A.C.; Capela, C. Fatigue Performance of Thin Laser ButtWelds in HSLA Steel. Metals 2021, 11, 1499. https://doi.org/10.3390/met11101499.
dc.identifier.doi10.3390/met11101499
dc.identifier.eissn2075-4701
dc.identifier.urihttp://hdl.handle.net/10400.8/15415
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationCentre for Mechanical Enginnering, Materials and Processes
dc.relation.hasversionhttps://www.mdpi.com/2075-4701/11/10/1499
dc.relation.ispartofMetals
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectfatigue strength
dc.subjectlaser butt weld
dc.subjectHSLA steel
dc.subjectfatigue limit prediction
dc.titleFatigue Performance of Thin Laser Butt Welds in HSLA Steeleng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Mechanical Enginnering, Materials and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT
oaire.citation.endPage22
oaire.citation.issue10
oaire.citation.startPage1
oaire.citation.titleMetals
oaire.citation.volume11
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCapela
person.givenNameCarlos
person.identifier.ciencia-id9B1E-6857-3D6B
person.identifier.orcid0000-0003-3334-4945
person.identifier.ridG-6395-2016
person.identifier.scopus-author-id7801358401
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isAuthorOfPublication.latestForDiscovery9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isProjectOfPublication0a3418ca-35b9-4670-a826-154cceca5a89
relation.isProjectOfPublication.latestForDiscovery0a3418ca-35b9-4670-a826-154cceca5a89

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This work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the S-N curves of four welded series. The results showed acceptable fatigue strength although the welded series presented multiple-imperfections. The analysis of fatigue behavior at low stress levels through the stress-concentrating effect explained the influence of each factor on the S-N curves of the welded series. The fatigue limits of the welded series predicted through the stress-concentrating effect and by the relationship proposed by Murakami showed good agreement with the experimental results.
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