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Multi objective optimization by application of Taguchi based Grey Relational Analysis for GMA welding of IS2062 structural steel

Rizvi S. A., Tewari S. P.

Mechanics and Mechanical Engineering

2017

Vol. 21, nr 3

717--729

Basic object of this research article was to investigate the parametric optimization of welding parameters such as arc voltage, wire feed speed and shielding gas flow rate for IS 2062 structural steel by integrating Taguchi method and Grey relational analysis. Experiments were conducted as per L16 (4xx3) orthogonal array. Design and Mechanical properties such tensile strength, Microhardness, toughness, and Microstructure of IS 2062 structural steel optimized by Grey-based Taguchi analysis were investigated, as they were selected as quality targets. Based on result of the grey relational analysis, a set of optimum welding parameters was obtained. The observed data from result have been interpreted, discussed and analyzed by integration of Grey-Taguchi methodology to optimize tensile strength, microhardness and percentage elongation.