Parametric Optimization of Nd:YAG Laser Beam Machining Process Using Artificial Bee Colony Algorithm

Table 1

Machining parameters with their levels.

Parameter	Levels
	−2	−1	0	1	2
Lamp current (𝑥1) (amp)	17	19	21	23	25
Pulse frequency (𝑥2) (kHz)	1	2	3	4	5
Air pressure (𝑥3) (kg/cm^2)	0.6	1	1.4	1.8	2.2
Pulse width (𝑥4) (%)	2	6	10	14	18