Optimization on Material Removal Rate and Surface Roughness of Stainless Steel 304 Wire Cut EDM by Response Surface Methodology

Table 4

Response surface methodology design.

Sl. no.	X1 (T –ON)	X2 (T- OFF)	X3 (IP)
1	1	0	0
2	0	1	0
3	0	0	0
4	0	−1	0
5	−1	1	−1
6	0	0	1
7	1	−1	1
8	0	0	−1
9	0	0	0
10	0	0	0
11	0	0	0
12	−1	−1	−1
13	1	1	1
14	−1	0	0
15	1	−1	−1
16	−1	−1	1
17	0	0	0
18	0	0	0
19	1	1	−1
20	0	1	−1