Beam Structure Damage Identification Based on BP Neural Network and Support Vector Machine

Table 4

The damage identification results of double cracks with 1% noise level.

Working condition number	Damage element number	Ideal result of SVM	Actual result of SVM
No. 1	10	3.125%	3.180%
	20	3.125%	3.150%
No. 2	10	6.250%	6.320%
	20	6.250%	6.300%
No. 3	10	12.500%	12.490%
	20	12.500%	12.460%
No. 4	10	15.625%	15.660%
	20	15.625%	15.640%