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Prediction of multiaxial fatigue life of notched maraging steel components manufactured by selective laser melting

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datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânica
datacite.subject.fosEngenharia e Tecnologia::Engenharia Civil
datacite.subject.fosCiências Naturais::Outras Ciências Naturais
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorBranco, R.
dc.contributor.authorCosta, J. D.
dc.contributor.authorJesus, J.
dc.contributor.authorBerto, F.
dc.contributor.authorFerreira, J. A. Martins
dc.contributor.authorCapela, C.
dc.date.accessioned2026-04-17T15:08:04Z
dc.date.available2026-04-17T15:08:04Z
dc.date.issued2022
dc.description.abstractThis paper aims at predicting the fatigue crack initiation life in maraging steel manufactured by selective laser melting under in-phase bending-torsion loading. Three relationships between the bending moment and the torsion moment were studied, namely B/T=2, B/T=1, and B/T=2/3. The tested geometries consisted of hollow cylindrical specimens with lateral holes. The crack initiation and the crack paths were detected in-situ using a high-resolution digital camera. The local stress-strain states at the notch region were accounted for using two alternative numerical models developed within linear-elastic frameworks: (1) a parametric structured mesh; and (2) an automatic unstructured mesh. Fatigue crack initiation sites and fatigue crack initiation lives were successfully predicted using both numerical models.eng
dc.description.sponsorshipThis 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.citationR. Branco, J.D. Costa, J. Jesus, F. Berto, J.A. Martins Ferreira, C. Capela, Prediction of multiaxial fatigue life of notched maraging steel components manufactured by selective laser melting, Procedia Structural Integrity, Volume 39, 2022, Pages 273-280, ISSN 2452-3216, https://doi.org/10.1016/j.prostr.2022.03.097.
dc.identifier.doi10.1016/j.prostr.2022.03.097
dc.identifier.eissn2452-3216
dc.identifier.urihttp://hdl.handle.net/10400.8/16144
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCentre for Mechanical Enginnering, Materials and Processes
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S2452321622003109?via%3Dihub
dc.relation.ispartofProcedia Structural Integrity
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectmultiaxial fatigue
dc.subjectfatigue crack initiation
dc.subjectmaraging steel
dc.subjectselective laser melting
dc.titlePrediction of multiaxial fatigue life of notched maraging steel components manufactured by selective laser meltingeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDB/00285/2020
oaire.awardTitleCentre for Mechanical Enginnering, Materials and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT
oaire.citation.endPage280
oaire.citation.startPage273
oaire.citation.titleProcedia Structural Integrity
oaire.citation.volume39
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 paper aims at predicting the fatigue crack initiation life in maraging steel manufactured by selective laser melting under in-phase bending-torsion loading. Three relationships between the bending moment and the torsion moment were studied, namely B/T=2, B/T=1, and B/T=2/3. The tested geometries consisted of hollow cylindrical specimens with lateral holes. The crack initiation and the crack paths were detected in-situ using a high-resolution digital camera. The local stress-strain states at the notch region were accounted for using two alternative numerical models developed within linear-elastic frameworks: (1) a parametric structured mesh; and (2) an automatic unstructured mesh. Fatigue crack initiation sites and fatigue crack initiation lives were successfully predicted using both numerical models.
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