Structural Damage Identification Based on Rough Sets and Artificial Neural Network

Table 2

Structural damage database.

Damage case	Damage condition			Natural frequency			⋯	Mode curvature
	Bay	Position	Degree	1	2	3	⋯	1	⋯	13
1	2	1	5%	8.76	32.34	61.57	⋯	0.006	⋯	0.006
2	2	1	10%	8.73	32.31	61.49	⋯	0.006	⋯	0.006
⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯
684	13	3	95%	7.84	24.53	52.32	⋯	0.006	⋯	0.018