Friction stir welding: multi-response optimisation using Taguchi-based GRA

Abstract

In present experimental work, friction stir welding of aluminium alloy 5083-H321 is performed for optimisation of process parameters for maximum tensile strength. Taguchi's L 9 orthogonal array has been used for three parameters -tool rotational speed (TRS), traverse speed (TS), and tool tilt angle (TTA) with three levels. Multi-response optimisation has been carried out through Taguchi-based grey relational analysis. The grey relational grade has been calculated for all three responsesultimate tensile strength, percentage elongation, and micro-hardness. Analysis of variance is the tool used for obtaining grey relational grade to find out the significant process parameters. TRS and TS are the two most significant parameters which influence most of the quality characteristics of friction stir welded joint. Validation of predicted values done through confirmation experiments at optimum setting shows a good agreement with experimental values.

Process Parameters Optimization for Producing AA6061/TiB2 Composites by Friction Stir Processing

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Optimization of Wear Properties in Aluminum Metal Matrix Composites using Hybrid Taguchi-GRA-PCA

“…Many specialists have utilized different statistical tools for optimization of wear properties of casted composite materials. The Taguchi approach is a standout amongst the most helpful systems for single objective optimization utilized for various design problems [4,5,16,23,27,28,15,11]. In the present situation of quick assembly and cost lessening, complex procedures have a few quality attributes.…”

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

“…Since the data obtained from the above design are discrete in nature, uncertainties are more which will have a complex interaction effect on the performance characteristics. These uncertainties are solved using GRA which has certain advantages over the other statistical techniques (Kundu & Singh, 2016). In GRA, multi-objective problems are transformed into a single objective problem.…”