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Experimental quality and strength evaluation of friction stir spot welding of aluminum sheets using flat tool with miniature profile

Kumar, S and Arpitha, HM and Swamybabu, V (2020) Experimental quality and strength evaluation of friction stir spot welding of aluminum sheets using flat tool with miniature profile. In: 2019 International Conference on Advances in Materials Research, ICAMR 2019, 25 - 27 Jul 2019, Bengaluru.

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Official URL: https://doi.org/10.1063/5.0022728

Abstract

Friction stir welding is a solid state butt joining method in which frictional heat generated between tool and sheet is used for mixing and refining the grains at interface of the sheets. Friction stir spot welding works on the same principle as the friction stir welding but former method is used for lap spot joining. Quality (distortion) and strength (load bearing capacity) are the two fundamental requirements of good joint. Variation in these two with respect to plunge depth is quantified by measuring the thickness of flash formation, and gap between sheets and tensile-shear testing. Distortion and strength of the joint primarily depends on the plunge depth which determines the volume of material displaced from the sheet. Among the selected various plunge depths, optimum joint is obtained for 0.7?mm, for which tensile-shear strength of 8.26?kN, flash thickness of 1.34?mm and gap between the sheets was 0.2?mm. For plunge depth below and above, 0.7mm, the joint interface mixing (strength) is minimal and distortion (flash thickness and gap between sheets) at the joint is more, respectively. © 2020 Author(s).

Item Type: Conference Paper
Publication: AIP Conference Proceedings
Publisher: American Institute of Physics Inc.
Additional Information: The copyright to this article belongs to American Institute of Physics Inc.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 22 Dec 2021 11:02
Last Modified: 22 Dec 2021 11:02
URI: http://eprints.iisc.ac.in/id/eprint/67367

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