Damage Identification of Bridge Based on Chebyshev Polynomial Fitting and Fuzzy Logic without Considering Baseline Model Parameters

Table 7

Membership degree of test samples identified by fuzzy systems.

Damage condition	Damage severity (%)
	2	8	10	13	18	20	22	29	30	32	38	40
No damage	0.99	0	0	0	0	0	0	0	0	0	0	0
Slight damage	0	1	1	1	0	0	0	0	0	0	0	0
Moderate damage	0	0	0	0	1	1	1	0	0	0	0	0
Severe damage	0	0	0	0	0	0	0	1	1	1	0.02	0
Catastrophic damage	0	0	0	0	0	0	0	0	0	0	0.8	1