Measurement and assessment of fatigue life of spot-weld joints

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dc.authorid0000-0002-6253-7597
dc.authorid0000-0003-4065-8862
dc.contributor.authorErtaş, Ahmet Hanifien_US
dc.contributor.authorVardar, Öktemen_US
dc.contributor.authorSönmez, Fazıl Önderen_US
dc.contributor.authorSolim, Zaferen_US
dc.date.accessioned2015-01-15T23:01:20Z
dc.date.available2015-01-15T23:01:20Z
dc.date.issued2009-01
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.description.abstractSpot-weld joints are commonly used to fasten together metal sheets. Because fatigue fracture is the most critical failure mode for these joints under fluctuating loads, understanding their fatigue failure behavior and assessment of their fatigue lives are crucial from the viewpoint of failure prevention in design. In this study, a series of experiments was conducted to study the fatigue failure of spot-welded modified tensile-shear specimens made of a low carbon steel. Two different types of resistance spot welding were investigated (manual and automated). Tests were repeated under different load ranges, and the corresponding fatigue lives were determined. The specimens were also examined under an optical microscope. In the numerical part of this study, a finite element analysis was carried out using commercial software, ANSYS, to determine the stress and strain states within the specimens. The material nonlinearity, local plastic deformations around the welds during loading, and the residual stresses and strains developed after unloading as a result of plastic deformations were taken into account. Based on the predicted stress and strain states, fatigue analyses were performed using several models for life assessment. Then, the measured and predicted fatigue lives were compared, and the suitability of the models was discussed. Among the strain-based models, Coffin-Manson and Morrow's means stress models yielded the best predictions.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationErtaş, A. H., Vardar, Ö., Sönmez, F. O. & Solim, Z. (2009). Measurement and assessment of fatigue life of spot-weld joints. Journal of Engineering Materials and Technology, Transactions of the ASME, 131(1), 1-11. doi:10.1115/1.3030941en_US
dc.identifier.doi10.1115/1.3030941
dc.identifier.endpage11
dc.identifier.issn0094-4289
dc.identifier.issn1528-8889
dc.identifier.issue1
dc.identifier.scopus2-s2.0-77955388027
dc.identifier.scopusqualityQ3
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/11729/347
dc.identifier.urihttp://dx.doi.org/10.1115/1.3030941
dc.identifier.volume131
dc.identifier.wosWOS:000262008300012
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorVardar, Öktemen_US
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherAsme-Amer Soc Mechanical Engen_US
dc.relation.ispartofJournal of Engineering Materials and Technology-Transactions of The Asmeen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCarbon steelen_US
dc.subjectFatigue testingen_US
dc.subjectFinite element analysisen_US
dc.subjectInternal stressesen_US
dc.subjectOptical microscopyen_US
dc.subjectPlastic deformationen_US
dc.subjectSheet materialsen_US
dc.subjectSpot weldingen_US
dc.subjectStress-strain relationsen_US
dc.subjectTensile strengthen_US
dc.subjectFinite-elementen_US
dc.subjectSheet steelsen_US
dc.subjectPredictionen_US
dc.subjectResistanceen_US
dc.subjectStrengthen_US
dc.subjectBehavioren_US
dc.subjectTensileen_US
dc.subjectSpecimenen_US
dc.subjectStressesen_US
dc.subjectModelen_US
dc.subjectElasticityen_US
dc.subjectFinite element methoden_US
dc.subjectLow carbon steelen_US
dc.subjectStrainen_US
dc.subjectStructural designen_US
dc.subjectUnloadingen_US
dc.subjectWeldsen_US
dc.subjectCommercial softwareen_US
dc.subjectFatigue fractureen_US
dc.subjectLocal plastic deformationen_US
dc.subjectMaterial non-linearityen_US
dc.subjectModified tensile shear specimenen_US
dc.subjectResidual stresses and strainsen_US
dc.subjectResistance spot weldingen_US
dc.subjectTensile shearsen_US
dc.subjectFatigue of materialsen_US
dc.titleMeasurement and assessment of fatigue life of spot-weld jointsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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