Frequency Aliasing-Based Spatial-Wavenumber Filter for Online Damage Monitoring

Table 1

Damage localization results of the six damages.

Damage label	(ka-I, tR-I) (rad/m, ms)	(ka-II, tR-II) (rad/m, ms)	Start time (ms)	Localized position (°, cm)	Actual position (°, cm)	Damage localization error (cm)
A	(382.0, 0.3967)	(58.6, 0.3966)	0.1031	(8.7, 20.1)	(10, 20)	0.5
B	(244.6, 0.3858)	(309.5, 0.3816)	0.1031	(51.7, 19.2)	(50, 20)	1.0
C	(−204.8, 0.3991)	(329.4, 0.3991)	0.1031	(121.9, 20.3)	(120, 20)	0.7
D	(−286.3, 0.5602)	(278.4, 0.5602)	0.1031	(135.8, 31.3)	(135, 30)	1.4
E	(−341.0, 0.4237)	(185.5, 0.4189)	0.1031	(151.5, 21.8)	(150, 20)	1.9
F	(−387.9, 0.4029)	(3.9, 0.3992)	0.1031	(179.4, 20.4)	(180, 20)	0.5