Friction Stir Spot Welding of Al6082-T6/HDPE/Al6082-T6/HDPE/Al6082-T6 sandwich sheets: hook formation and lap shear test performance | Zendy

K. Ravi | Zendy; R. Ganesh Narayanan | Zendy; Pritam Kumar Rana | Zendy

Open Access

Friction Stir Spot Welding of Al6082-T6/HDPE/Al6082-T6/HDPE/Al6082-T6 sandwich sheets: hook formation and lap shear test performance

Author(s) -

K. Ravi,

R. Ganesh Narayanan,

Pritam Kumar Rana

Publication year - 2018

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2018.05.011

Subject(s) - materials science , high density polyethylene , composite material , spot welding , welding , shear (geology) , lap joint , joint (building) , sheet metal , shear strength (soil) , structural engineering , polyethylene , environmental science , soil science , engineering , soil water

In the present work, the effect of shoulder surface and pin profiles during friction stir spot welding of Al6082-T6/HDPE/Al6082-T6/HDPE/Al6082-T6 sandwich sheet has been attempted. Lap shear tests are performed to evaluate the mechanical performance. It is observed during lap shear tests that a tool with square pin produced stronger joints. The square pin produced joints with moderate hook distance, hook width and hook height and larger bond area resulting in stronger joints. The joints made from tri-metallic sheet perform better than sandwich sheet joints. The tool with square pin generated a joint withstanding 1.4 kN fracture load in case of sandwich sheet, while it is 2.8 kN in case of tri-metallic sheet. The tri-metallic joints are characterized by larger bond area and larger hook distance. Nugget pull out is the failure mode seen in sandwich and tri-metallic sheets during lap shear tests.

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