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

Table 8

Response table for mean GRG.

Level
1	0.5102	0.4841	0.5532	0.6478
2	0.5216	0.4864	0.6147	0.5102
3	0.5402	0.5943	0.4608	0.4892
4	0.5625	0.5698	0.5059	0.4873
Delta	0.0522	0.1102	0.1539	0.1605
Rank	4	3	2	1