Bi-objective Optimization of Process Parameters in Electric Discharge Machining of SS630 Using Grey Relation Analysis

Table 7

Obtained GRC and GRG values with their corresponding ranks.

Ideal Seq.	Deviation seq.		GRC		GRG	Rank
	MRR (mm^3/min)	SR (μm)	MRR (mm^3/min)	SR (μm)
1	1	0.068	0.333333	0.880282	0.606808	4
2	0.58361	0.32	0.461421	0.609756	0.535588	7
3	0.881129	0.4	0.362023	0.555556	0.458789	12
4	0.765802	0.532	0.395007	0.484496	0.439751	14
5	0.52566	0.576	0.487491	0.464684	0.476087	9
6	0.459481	0.8	0.521115	0.384615	0.452865	13
7	0.861356	0	0.367281	1	0.68364	2
8	0.708652	0.436	0.413684	0.534188	0.473936	10
9	0.721111	0.876	0.409463	0.363372	0.386418	16
10	0.595382	0.72	0.456462	0.409836	0.433149	15
11	0.224597	0.64	0.690039	0.438596	0.564318	6
12	0.114299	0.176	0.813936	0.739645	0.776791	1
13	0.685335	0.476	0.421822	0.512295	0.467058	11
14	0.709681	0.288	0.413332	0.634518	0.523925	8
15	0	0.968	1	0.340599	0.6703	3
16	0.092468	1	0.843928	0.333333	0.588631	5