A Hybrid Nondominant-Based Genetic Algorithm (NSGA-II) for Multiobjective Optimization to Minimize Vibration Amplitude in the End Milling Process

Table 1

Process parameters and their levels.

Parameters (input variables)	Notations used	Units	Factorial levels
			−2	−1	0	1	2
Spindle speed	N	rpm	1500	2000	2500	3000	3500
Rate of feed		mm/rev	0.04	0.06	0.08	0.1	0.12
Depth of cut (axial)		mm	0.5	0.6	0.7	0.8	0.9
Depth of cut (radial)		mm	0.5	0.6	0.7	0.8	0.9
Radial rake angle of tool	γ	Degree	12	15	18	21	24