Experimental investigation and numerical Analysis using Taguchi and ANOVA Method for Underwater Friction Stir Welding of aluminium alloy 2017 process improvement

Abstract

Abstract The effect of under water friction stir welding for 5 mm AA2017 aluminum alloy plaque on mechanical properties has been examined, nine different test were designed according to Taguchi orthogonal array (OA) without changing the welding tool. Three variable operating parameters (Welding velocity, rotational velocity and axial force) with three levels for each parameter have been used. The effects of each FSW parameters on the weld joint were discussed and analysed, the analysis of variance (ANOVA) is adopted to identify the contribution of each FSW underwater parameters. The statisticl Taguchi method (MT) was employed to pridect the optimal combination of welding parameters to improve the tensile properties such tensile strength (TS) of welded joints as retaining high production rates. The experimental tests show good agreement with the results estimated by the proposed mathematical model. Where the obtained validation results confirm the robustness of the optimization method as a tool for improving the quality responses of under water friction stir welding.