Experimental Investigation on Material Transfer Mechanism in WEDM of Pure Titanium (Grade-2)

Table 2

Design of experiments matrix and results.

Factors							Response variables
Standard run no.	Pulse on time 𝑇on (µs)	Pulse off time 𝑇off (µs)	Peak current Ip (Ampere)	Spark gap voltage SV (Volt)	Wire feed WF (m/min)	Wire tension WT (grams)	MRR (mm^3/min)	Overcut (μm)	Surface roughness (μm)
1	1.1	28	200	50	7	500	9.6	40	3.22
2	0.9	38	160	50	4	500	4.92	26	2.48
3	0.7	28	160	60	4	950	3.39	22	2.23
4	0.9	17	120	50	10	950	8.29	38	2.75
5	0.9	28	120	60	7	500	4.45	31	2.47
6	1.1	28	160	40	4	950	9.2	33	2.93
7	0.9	38	160	50	10	1400	4.77	25	2.48
8	0.9	28	160	50	7	950	5.19	30	2.65
9	0.9	17	160	50	4	500	8.81	33	2.81
10	1.1	28	160	40	10	950	8.59	33	2.94
11	1.1	38	160	40	7	950	8.3	32	2.91
12	1.1	28	160	60	4	950	7.03	35	2.83
13	0.9	17	160	50	10	500	8.19	32	2.79
14	0.9	28	160	50	7	950	4.67	30	2.61
15	0.7	28	120	50	7	500	3.28	25	2.49
16	0.9	28	160	50	7	950	5.51	31	2.68
17	0.9	28	120	60	7	1400	4.66	28	2.49
18	0.7	38	160	40	7	950	3.65	28	2.32
19	0.9	38	120	50	10	950	4.37	26	2.31
20	0.9	28	200	40	7	1400	6.72	38	2.89
21	0.9	28	200	60	7	500	6.67	32	2.69
22	0.9	38	200	50	10	950	6.54	35	2.57
23	0.9	28	120	40	7	1400	5.07	29	2.71
24	0.7	28	120	50	7	1400	3.3	24	2.51
25	0.9	38	200	50	4	950	7.07	35	2.56
26	1.1	28	160	60	10	950	6.77	37	2.82
27	1.1	28	120	50	7	500	7.1	33	2.77
28	0.7	28	160	40	10	950	4.27	30	2.35
29	0.7	28	200	50	7	500	4.49	31	2.48
30	0.7	17	160	40	7	950	6.9	33	2.70
31	0.7	28	200	50	7	1400	4.44	33	2.51
32	0.9	28	160	50	7	950	4.7	31	2.65
33	0.9	17	200	50	4	950	8.06	42	2.88
34	0.9	28	160	50	7	950	5.61	33	2.65
35	1.1	17	160	40	7	950	11.16	43	3.28
36	0.9	17	200	50	10	950	8.28	37	2.98
37	0.9	28	200	40	7	500	7.07	35	2.84
38	0.7	28	160	40	4	950	4.41	30	2.33
39	0.9	38	160	50	10	500	4.96	25	2.50
40	0.9	28	160	50	7	950	5.65	32	2.69
41	1.1	38	160	60	7	950	6.77	33	2.66
42	0.7	17	160	60	7	950	4.14	30	2.60
43	0.9	28	200	60	7	1400	6.57	32	2.68
44	0.9	17	120	50	4	950	7.61	35	2.75
45	0.7	28	160	60	10	950	3.75	25	2.28
46	1.1	28	120	50	7	1400	7.11	35	2.75
47	0.7	38	160	60	7	950	3.28	24	2.15
48	0.9	17	160	50	4	1400	8.15	31	2.85
49	0.9	28	120	40	7	500	5.36	31	2.78
50	1.1	17	160	60	7	950	8.45	40	3.00
51	0.9	38	120	50	4	950	4.55	25	2.29
52	1.1	28	200	50	7	1400	8.37	35	3.12
53	0.9	17	160	50	10	1400	7.53	37	2.82
54	0.9	38	160	50	4	1400	4.92	25	2.49