Health Assessment of Large Two Dimensional Structures Using Limited Information: Recent Advances

Table 5

Stiffness parameter (EI/L) identification for defect 3 using Stage 1 of GILS-EKF-UI.

Member	Identified (EI/L) values in (kN-m) for member 16a and 16b
	Additional node at mid-span of			Additional node at 3.07 m right			Additional node at 2.07 m
	member 16			of node 10			right of node 10
	9 DDOFs			9 DDOFs			9 DDOFs
	Nominal/Theoretical	Identified	Error (%)	Nominal/Theoretical	Identified	Error (%)	Nominal/Theoretical	Identified	Error (%)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
𝑘16a	26952	20276	− 24.8	40121	29072	− 27.5	59503	39557	− 33.5
𝑘16b	26952	25777	−4.4	20292	20604	1.5	17422	18475	6.0