Parametric optimization of MRR and surface roughness in wire electro discharge machining (WEDM) of D2 steel using Taguchi-based utility approach

Journal of Materials Science: Materials in Engineering

Table 3 Experimental plan with mean responses, corresponding S/N ratios and multi-response S/N ratio values

Trial no.	Process parameters				Mean responses		S/N ratio
Trial no.	T _on (μs)	T _off (μs)	SV (V)	WF (m/min)	MRR (mm³/min)	Ra (μm)	η ₁	η ₂	η
1	110	30	20	2	2.6325	1.31	8.4074	−2.3454	3.0309
2	110	30	40	4	1.701	1.5	4.6141	−3.5218	0.5461
3	110	30	60	6	0.7695	1.4	−2.2758	−2.9225	−2.5991
4	110	36	20	4	2.592	1.31	8.2727	−2.3454	2.9636
5	110	36	40	6	1.531	1.41	3.6995	−2.9843	0.3575
6	110	36	60	2	0.6885	1.28	−3.2419	−2.1442	−2.6930
7	110	42	20	6	1.863	1.36	5.4043	−2.6707	1.3667
8	110	42	40	2	1.2555	1.43	1.9763	−3.1067	−0.5651
9	110	42	60	4	0.6075	1.33	−4.3291	−2.4770	−3.4030
10	120	30	20	4	6.561	2.2	16.3394	−6.8484	4.7454
11	120	30	40	6	4.1148	1.85	12.2870	−5.3434	3.4717
12	120	30	60	2	1.9035	1.52	5.5911	−3.6368	0.9770
13	120	36	20	6	5.913	2.3	15.4362	−7.2345	4.1008
14	120	36	40	2	3.8475	1.7	11.7036	−4.6089	3.5472
15	120	36	60	4	1.782	1.54	5.0182	−3.7504	0.63387
16	120	42	20	2	5.2245	2.3	14.3609	−7.2345	3.5631
17	120	42	40	4	3.1995	1.97	10.1016	−5.8893	2.1061
18	120	42	60	6	1.377	1.59	2.7787	−4.0279	−0.6246
19	130	30	20	6	8.505	2.85	18.5935	−9.0969	4.7482
20	130	30	40	2	8.0595	2.46	18.1262	−7.8187	5.15373
21	130	30	60	4	3.7665	1.9	11.5188	−5.5750	2.9718
22	130	36	20	2	9.396	3.05	19.4589	−9.686	4.8864
23	130	36	40	4	6.966	2.7	16.8597	−8.6272	4.1161
24	130	36	60	6	3.1995	2.1	10.1016	−6.4443	1.8286
25	130	42	20	4	8.343	2.85	18.4264	−9.0969	4.6647
26	130	42	40	6	5.7105	2.6	15.1335	−8.2994	3.4170
27	130	42	60	2	2.7135	1.97	8.6706	−5.8893	1.3906