Prediction of Tool Lifetime and Surface Roughness for Nickel-Based Waspaloy

Table 7

Comparison for the experimental and predictive cutting time for each set of the cutting parameters.

The first group cutting parameters	V = 40 m/min, fz = 0.3 mm/tooth, ap = 0.3 mm
Experimental value (min)	3.133	6.267	9.4	12.533	15.667
Predictive value (min)	3.992036	5.845427	7.791341	13.705577	15.719503
Error (%)	27.419	6.727	17.113	9.356	0.335
Average magnitude of error (%)	12.190
The second group cutting parameters	V = 37.5 m/min, fz = 0.35 mm/tooth, ap = 0.25 mm
Experimental value (min)	3.82	5.64	7.46	11.28	14.1
Predictive value (min)	4.335873	4.974936	6.271479	11.736453	15.077437
Error (%)	13.5	11.792	15.95	4.047	6.932
Average magnitude of error (%)	10.4458
The third group cutting parameters	V = 35 m/min, fz = 0.4 mm/tooth, ap = 0.2 mm
Experimental value (min)	2.564	5.127	7.691	10.255	12.818
Predictive value (min)	3.027042	4.607661	7.894739	9.680498	13.283241
Error (%)	18.059	10.129	2.649	5.602	3.630
Average magnitude of error (%)	8.014