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

Table 8

Fuzzy rules for damage condition assessment of multiple locations.

Damage condition	Node number
	5	6	10	11	16	17
5-slight damage; 10-slight damage; 16-slight damage	VVH	VVH	VVH	VVH	VVH	VVH
5-slight damage; 10-moderate damage; 16-slight damage	VVH	VVH	H	H	VVH	VVH
5-slight damage; 10-severe damage; 16-slight damage	VVH	VVH	ML	ML	VVH	VVH
5-slight damage; 10-catastrophic damage; 16-slight damage	VVH	VVH	N	N	VVH	VVH
5-severe damage; 10-slight damage; 16-slight damage	ML	ML	VVH	VVH	VVH	VVH
5-severe damage; 10-slight damage; 16-moderate damage	ML	ML	VVH	VVH	H	H
5-severe damage; 10-slight damage; 16-severe damage	ML	ML	VVH	VVH	ML	ML
5-severe damage; 10-slight damage; 16-catastrophic damage	ML	ML	VVH	VVH	N	N
5-moderate damage; 10-moderate damage; 16-moderate damage	H	H	H	H	H	H
5-severe damage; 10-severe damage; 16-severe damage	ML	ML	ML	ML	M	M
5-catastrophic damage; 10-catastrophic damage; 16-catastrophic damage	N	N	N	N	VL	VL