Investigation of machining characteristics and surface integrity for trim cut WEDM of hybrid metal matrix composite [Al 6061, SiC, and TiB2]

Journal of Engineering and Applied Science

Table 7 Design of experiments (fold over fractional factorial) and the results obtained

Sample no	T_on	T_off	SV	I_p	FP	WT	WO	Punch size (mm)	Spark gap (µm)	Surface roughness (µm)
Rough cut	128	48	48	180	H	8	150	4.942	54	3.93
1	103	40	60	110	H	8	130	4.9401	34.95	3.46
2	115	40	60	70	H	11	90	4.882	24	3.39
3	103	60	60	70	L	11	130	4.9823	13.85	2.76
4	115	60	60	110	L	8	90	4.8781	25.95	3.56
5	103	40	90	110	L	11	130	4.9399	30.1	3.29
6	115	40	90	70	L	8	90	4.8798	30.05	3.01
7	103	60	90	70	H	8	90	4.8942	17.9	2.20
8	115	60	90	110	H	11	130	4.9278	41.1	3.38
9	115	60	90	70	L	11	90	4.8851	22.45	3.19
10	103	60	90	110	L	8	130	4.9398	35.1	3.38
11	115	40	90	110	H	8	90	4.8545	37.75	3.64
12	103	40	90	70	H	11	130	4.9448	32.6	3.05
13	115	60	60	70	H	8	130	4.932	39	3.20
14	103	60	60	110	H	11	90	4.9035	13.25	3.04
15	115	40	60	110	L	11	130	4.9436	33.2	3.22
16	103	40	60	70	L	8	90	4.9069	11.55	2.66