Effects of Layer Orientation on the Multiaxial Fatigue Behavior of Additively Manufactured Ti-6Al-4V

dc.creatorCarrion, Patricio
dc.creatorImandoust, Aidin
dc.creatorSimsiriwong, Jutima
dc.creatorShamsaei, Nima
dc.date.accessioned2021-11-11T15:10:32Z
dc.date.available2021-11-11T15:10:32Z
dc.date.issued2018
dc.description.abstractAdditive manufacturing (AM) allows for fabrication of components with complex geometries that cannot be fabricated using conventional manufacturing techniques. These components are often subjected to multiaxial stress states due to their typically complex design accompanied by residual stresses and/or multiaxial external loading. Therefore, understanding the fatigue behavior of AM materials under multiaxial-type loadings is necessary for ensuring reliable in-service component performance. In this study, the effects of layer orientation on the multiaxial fatigue behavior of Ti-6Al-4V fabricated via a laser-powder bed fusion (L-PBF) process was investigated. Tubular thin-walled multiaxial specimens were fabricated in vertical and diagonal orientations with respect to the build plate. Specimens were tested under axial, torsional, in-phase axial/torsional, and 90° out-of-phase axial-torsional cyclic loadings. Upon failure, the crack orientation of vertical and diagonal specimens was correlated to the type of loading, which illustrated the failure mechanism of L-PBF Ti-6Al-4V and justified the variations in the fatigue lives of specimens.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90214
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17135
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2018 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectadditive manufacturingen_US
dc.subjectfailure mechanismsen_US
dc.subjectmutliaxial fatigueen_US
dc.subjecttitaniumen_US
dc.titleEffects of Layer Orientation on the Multiaxial Fatigue Behavior of Additively Manufactured Ti-6Al-4Ven_US
dc.typeConference paperen_US

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