Abstract: Taguchi philosophy was utilised to calculate the most significant control factors which will yield higher impact strength of the joints of friction stir welded dissimilar AA5083 and AA6061 aluminium alloy. To optimize the process parameters such as tool rotational speed, weld speed and tool tilt angle on impact strength of friction stir welded dissimilar AA5083 and AA6061 aluminium alloy, Taguchi Design of Experiment (DOE) and optimization technique was utilised. The optimum levels of process parameters were fund by utilising the Taguchi parametric design concept. The outcomes indicate that the rotational speed, welding speed and tool tilt angle are the important parameters in deciding the impact strength of the weld joint. The predicted optimal value of Impact strength of friction stir welded dissimilar AA5083 and AA6061aluminium alloy is 30J. The outcomes were confirmed by further experiments.
Keywords: Friction stir welding; AA5083 and AA6061; Taguchi design of experiment (DOE) ; Process parameters; Impact strength.