Crack Parameters Identification Based on a Kriging Surrogate Model for Operating Rotors

Table 3

Crack parameters identification results by ANN using 300 sets of samples.

Case	Actual crack parameters			Predicted crack parameters by ANN			Percentage error
	Position, (element)	Depth, (cm)	Angle, (degrees)	Position, (element)	Depth, (cm)	Angle, (degrees)	Error (%)	Error (%)	Error (%)
1	20	0.375	90	20	0.39386	90	0.00	5.03	0.00
2	31	0.25	45	31	0.25569	45	0.00	2.28	0.00
3	50	0.1	45	48	0.10314	45	4.00	3.14	0.00
4	25	0.125	45	28	0.11122	45	12.00	11.02	0.00
5	21	0.225	90	20	0.22909	45	4.76	1.81	50.00
6	19	0.45	90	23	0.49150	90	21.01	9.22	0.00
7	49	0.225	45	49	0.22645	45	0.00	0.64	0.00
8	17	0.3	45	17	0.27013	45	0.00	9.96	0.00