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dc.contributor.authorLakshmi Balasubramaniam, Guruvignesh
dc.contributor.authorBoldsaikhan, Enkhsaikhan
dc.contributor.authorJoseph Rosario, Gratias Fernandez
dc.contributor.authorRavichandran, Saravana P.
dc.contributor.authorFukada, Shintaro
dc.contributor.authorFujimoto, Mitsuo
dc.contributor.authorKamimuki, Kenichi
dc.date.accessioned2021-11-27T14:42:01Z
dc.date.available2021-11-27T14:42:01Z
dc.date.issued2021-11-01
dc.identifier.citationCitation: Lakshmi Balasubramaniam, G.; Boldsaikhan, E.; Joseph Rosario, G.F.; Ravichandran, S.P.; Fukada, S.; Fujimoto, M.; Kamimuki, K. Mechanical Properties and Failure Mechanisms of Refill Friction Stir Spot Welds. J. Manuf. Mater. Process. 2021, 5, 118. https://doi.org/ 10.3390/jmmp5040118en_US
dc.identifier.issn2504-4494
dc.identifier.urihttps://doi.org/10.3390/jmmp5040118
dc.identifier.urihttps://soar.wichita.edu/handle/10057/22327
dc.descriptionCopyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).en_US
dc.description.abstractRefill friction stir spot welding (RFSSW) is an innovative solid-state welding technology for aluminum structures. The presented study aimed to evaluate the mechanical properties of refill spot welds and their failure mechanisms with the use of industrial test standards. The mechanical properties of refill spot welds were compared with those of rivet joints with comparable joint sizes. Static load tests indicated that RFSSW coupons demonstrate higher ultimate shear strengths but slightly lower ultimate tension strengths than those of rivet coupons. Fatigue test results indicated that both RFSSW coupons and rivet coupons demonstrate comparable performances during lowload-level fatigue lap shear tests but RFSSW coupons outperform rivet coupons during high-loadlevel fatigue lap shear tests. The failure mechanisms of refill spot welds were characterized in terms of external loading, parent metal properties, and weld properties. Refill spot weld failures included parent metal tensile failures, nugget pullouts, and interfacial failures. A refill spot weld may demonstrate one or a combination of these mechanical failures. Although the mechanical tests of refill spot welds demonstrated promising results with predictable failure mechanisms, the metallurgical evolution involved in RFSSW remains a subject to study.en_US
dc.description.sponsorshipThis research was funded by Kawasaki Heavy Industries (KHI) through the Center for Friction Stir Processing (CFSP).en_US
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.relation.ispartofseriesJournal of Manufacturing and Materials Processing;Vol. 5, Iss. 4
dc.subjectRefill friction stir spot weldingen_US
dc.subjectRobotic spot weldingen_US
dc.subjectFailure mechanismsen_US
dc.subjectMechanical propertiesen_US
dc.subjectRivetingen_US
dc.titleMechanical properties and failure mechanisms of refill friction stir spot weldsen_US
dc.typeArticleen_US
dc.rights.holderCopyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).en_US


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