Describing fatigue crack growth and load ratio effects in Al 2524 T3 alloy with an enhanced exponential model

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dc.contributor.authorBaptista, C. A. R. P.
dc.contributor.authorAdib, A. M. L.
dc.contributor.authorTorres, M. A. S. [UNESP]
dc.contributor.authorPastoukhov, V. A.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionEmpresa Brasileira Aeronaut SA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Taubate
dc.date.accessioned2014-05-20T13:28:29Z
dc.date.available2014-05-20T13:28:29Z
dc.date.issued2012-08-01
dc.description.abstractThe fatigue crack behavior in metals and alloys under constant amplitude test conditions is usually described by relationships between the crack growth rate da/dN and the stress intensity factor range Delta K. In the present work, an enhanced two-parameter exponential equation of fatigue crack growth was introduced in order to describe sub-critical crack propagation behavior of Al 2524-T3 alloy, commonly used in aircraft engineering applications. It was demonstrated that besides adequately correlating the load ratio effects, the exponential model also accounts for the slight deviations from linearity shown by the experimental curves. A comparison with Elber, Kujawski and "Unified Approach" models allowed for verifying the better performance, when confronted to the other tested models, presented by the exponential model. (C) 2012 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv São Paulo, EEL, Dept Mat Engn, BR-12602810 Lorena, SP, Brazil
dc.description.affiliationEmpresa Brasileira Aeronaut SA, EMBRAER, BR-12227901 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUNESP, FEG, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUniv Taubate, UNITAU, Inst Engn, BR-12080000 Taubate, SP, Brazil
dc.description.affiliationUnespUNESP, FEG, BR-12516410 Guaratingueta, SP, Brazil
dc.format.extent66-73
dc.identifierhttp://dx.doi.org/10.1016/j.mechmat.2012.04.003
dc.identifier.citationMechanics of Materials. Amsterdam: Elsevier B.V., v. 51, p. 66-73, 2012.
dc.identifier.doi10.1016/j.mechmat.2012.04.003
dc.identifier.issn0167-6636
dc.identifier.urihttp://hdl.handle.net/11449/9486
dc.identifier.wosWOS:000306033000006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMechanics of Materials
dc.relation.ispartofjcr2.697
dc.relation.ispartofsjr1,248
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFatigue crack growthen
dc.subjectExponential modelen
dc.subjectCycle asymmetryen
dc.subjectAluminum alloy 2524en
dc.titleDescribing fatigue crack growth and load ratio effects in Al 2524 T3 alloy with an enhanced exponential modelen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0003-2442-7714[4]

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