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

Table 4

Crack parameters identification results by ANN using 600 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	0.39146	90	0.00	4.39	0.00
2	31	0.25	45	31	0.23780	45	0.00	4.88	0.00
3	50	0.1	45	49	0.12001	45	2.00	20.01	0.00
4	25	0.125	45	27	0.11725	45	8.00	6.20	0.00
5	21	0.225	90	22	0.22614	90	4.76	0.51	0.00
6	19	0.45	90	22	0.49150	90	15.79	9.22	0.00
7	49	0.225	45	49	0.22591	45	0.00	0.40	0.00
8	17	0.3	45	17	0.29535	45	0.00	1.55	0.00