Friction stir stitch welding - process development and mechanical property evaluation
- Badarinarayan H. ,
- Hunt F. and
- Okamoto K.
- Badarinarayan H. ,
- Hunt F. and
- Okamoto K.
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A numerical and experimental study was undertaken to investigate the mechanism of swing friction stir spot welding (FSSW) and the effects of swing length and weld direction on the joint strength. Coupons were taken from a commercial A6022-T4 aluminium alloy sheet (thickness 1 mm), and longitudinal and transverse welds were produced using a C-frame gun. Process parameters of 2500 rpm, 900 mm/min plunge speed and 2.5 mm swing length were utilised. Finite element analysis (ANSYS Multiphysics 10.0) was performed to predict stress distribution on the workpieces. Results are presented comparing lap shear and cross tension static strengths, failure modes and fatigue strengths in swing and conventional FSSW and for lap shear strength as a function of swing length.
6th International Symposium, 10-13 Oct 2006, Session 6B: Friction Stir Spot Welding, Paper 03
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