Table 8.

Validation results: measured vs. predicted surface roughness by high-speed machining.

#	Feed Rate (mm/rev)	Cutting Speed (m/min)	Depth of Cut (mm)	Surface Roughness (µm)
				Measured	Predicted	Error %
1	0.243	313	0.188	0.77	0.837	−8.7
2	0.209	284.2	0.162	0.76	0.686	9.7
3	0.195	340	0.205	0.47	0.409	12.9
	Average of absolute error %					10.4