Title: Multi response optimisation of FSW while using dissimilar aluminium alloys

Authors: Bikram Jit Singh; Rahul Singla

Addresses: Mechanical Engineering Department, M.M. University, Mullana-133207, Ambala, Haryana, India ' M.M. University, Mullana-133207, Ambala, Haryana, India

Abstract: In recent times, focus has been on developing fast and efficient processes that are environment friendly. The spotlight has been turned on 'friction stir welding' as a joining technology, capable of providing welds that do not have defects normally associated with fusion welding processes. From the available literature, it has been observed that the effect of welding parameters on desired characteristics was determined by taking into consideration one parameter at a time or by using conventional methods. So without ignoring the limitations of earlier researches, the main focus in this study has been kept on welding of dissimilar aluminium alloys (AA6061 and AA5086) by using design of experiments which is quite rarely used multi-factor at a time technique. Tensile strength and hardness were identified as key mechanical properties and were optimised upto 0.156 KN/mm² and 73.19 HVN respectively. The fractional factorial design has been used to achieve required optimisation by using software 'Minitab-16'.

Keywords: aluminium alloys; critical to process parameters; CPPs; design of experiments; DoE; feed; friction stir welding; FSW; hardness; optimisation; tensile strength; tilt angle; tip plunge depth; tool rotation speed; tool shape; two sample t-test; shoulder diameter; weld specimen.

DOI: 10.1504/IJPSE.2018.093710

International Journal of Process Systems Engineering, 2018 Vol.4 No.4, pp.230 - 256

Received: 08 May 2017
Accepted: 25 Nov 2017
Published online: 01 Aug 2018 *

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