Surface Roughness Evaluation in Turning of Nimonic C263 Super Alloy Using 2D DWT Histogram Equalization

Table 6

Evaluation parameters in DWT histogram equalization.

Feed rate (mm/rev)	Depth of cut (mm)	Spindle speed (rpm)	average (μm)	Gray-level intensity	Surface roughness () (μm)	Machining time (minutes)	Histogram frequency (Hz)
0.05	0.25	450	80	60	1.25	0	310
0.07	0.50	450	100	65	1.75	4	310
0.2	0.75	460	130	65	2.10	8	330
0.25	0.75	470	165	70	1.50	12	360
0.26	0.25	480	210	80	1.10	16	380
0.28	0.50	490	260	90	1.50	20	390
0.28	0.50	500	295	100	1.075	24	400
0.28	0.75	510	320	115	0.90	28	410
0.28	0.25	520	360	120	0.85	32	540
0.28	0.25	540	390	125	0.5	33	600