Multi-Objective Optimization of Friction Stir Welding of Aluminium Alloy Using Grey Relation Analysis with Entropy Measurement Method

The present research focus on optimization of Friction Stir Welding (FSW) process parameters for joining of AA6061 aluminium alloy using hybrid approach. The FSW process parameters considered are tool rotational speed, welding speed and axial force. The quality characteristics considered are tensile strength (TS) and percentage of tensile elongation (TE). Taguchi based experimental design L 9 orthogonal array is used for determining the experimental results. The value of weights corresponding to each quality characteristic is determined by using the entropy measurement method so that their importance can be properly explained. Analysis of Variance (ANOVA) is used to determine the contribution of FSW process parameters. The confirmation tests also have been done for verifying the results.

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