Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/46602
DC FieldValueLanguage
dc.contributor.authorWang, D.A.en_US
dc.contributor.author王東安zh_TW
dc.contributor.authorChen, C.H.en_US
dc.date2009zh_TW
dc.date.accessioned2014-06-06T08:20:26Z-
dc.date.available2014-06-06T08:20:26Z-
dc.identifier.issn0924-0136zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/46602-
dc.description.abstractThe fatigue lives of friction stir spot welds in aluminum 6061-T6 lap-shear specimens under cyclic loading conditions are investigated in this paper. The paths of fatigue cracks near friction stir spot welds in lap-shear specimens are first examined. The experimental observations suggest that under cyclic loading conditions, the fatigue crack is initiated near the possible original notch tip in the stir zone and propagates along the circumference of the nugget, then through the sheet thickness and finally grows in the width direction to cause final fracture. A fatigue crack growth model based on the Paris law for crack propagation and the local stress intensity factors for kinked cracks is then adopted to predict the fatigue lives of friction stir spot welds. The global and local stress intensity factors are used to estimate the local stress intensity factors of kinked cracks with experimentally determined kink angles. The results indicate that the fatigue life predictions based on the Paris law and the local stress intensity factors as functions of the kink length agree well with the experimental results. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Materials Processing Technologyen_US
dc.relation.ispartofseriesJournal of Materials Processing Technology, Volume 209, Issue 1, Page(s) 367-375.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.jmatprotec.2008.02.008en_US
dc.subjectFriction stir spot welden_US
dc.subjectLap-shear specimenen_US
dc.subjectFatigueen_US
dc.subjectStress intensityen_US
dc.subjectfactoren_US
dc.subjectlap-shear specimensen_US
dc.subjectintensity factor solutionsen_US
dc.subjectkinked cracksen_US
dc.subjectlifeen_US
dc.subjectpredictionen_US
dc.subjectgrowthen_US
dc.subjectbehavioren_US
dc.titleFatigue lives of friction stir spot welds in aluminum 6061-T6 sheetsen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.jmatprotec.2008.02.008zh_TW
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:精密工程研究所
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