PTFE in Wet and Dry Drilling: Two-Tier Modeling and Optimization through ANFIS

Table 7

Predicted results and validation results.

Model	Drilling conditions	Predicted drilling condition			Response		Error
		Spindle speed (N)	Feed rate (f)	Point angle (Ɵ)	Surface roughness (Ra)
					GA predicted	Validation result
		rpm	mm/min	(^o)	μm	μm	%
RSM models based on experimental data- and	Dry condition	1138	0.05	100	0.80	0.84	4.76
	Wet condition	1204	0.05	100	0.77	0.81	4.94
ANFIS updated RSM models: and	Dry condition	1533	0.05	100	0.75	0.77	2.60
	Wet condition	1656	0.05	100	0.68	0.70	2.86