Experimental investigation and multi-objective optimization of wire electrical discharge machining (WEDM) of 5083 aluminum alloy
(1. Department of Mechanical Engineering, National Engineering College, K.R. Nagar 628503, Tamilnadu, India;
2. Mechanical Engineering Department, SCAD College of Engineering & Technology,
Cheranmahadevi 627414, Tamilnadu, India;
3. Production Engineering Department, Jadavpur University, Kolkata 700032, India)
2. Mechanical Engineering Department, SCAD College of Engineering & Technology,
Cheranmahadevi 627414, Tamilnadu, India;
3. Production Engineering Department, Jadavpur University, Kolkata 700032, India)
Abstract: The experimental analysis presented aims at the selection of the most optimal machining parameter combination for wire electrical discharge machining (WEDM) of 5083 aluminum alloy. Based on the Taguchi experimental design (L9 orthogonal array) method, a series of experiments were performed by considering pulse-on time, pulse-off time, peak current and wire tension as input parameters. The surface roughness and cutting speed were considered responses. Based on the signal-to-noise (S/N) ratio, the influence of the input parameters on the responses was determined. The optimal machining parameters setting for the maximum cutting speed and minimum surface roughness were found using Taguchi methodology. Then, additive model was employed for prediction of all (34) possible machining combinations. Finally, a handy technology table has been reported using Pareto optimality approach.
Key words: wire electrical discharge machining (WEDM); aluminum alloy; Taguchi method; additive model; optimization; Pareto optimization