Application of Blind Source Separation Algorithms and Ambient Vibration Testing to the Health Monitoring of Concrete Dams

Table 1

A comparison of the calculated and identified no-damping natural frequencies (unit: Hz).

Method	1	2	3	4	5	6	7	8	9	10
FEM	1.05	2.51	3.77	5.56	6.25	7.91	8.34	10.91	11.93	12.53
SSI	1.06	2.50	3.78	5.57	6.24	7.85	8.35	10.91	11.92	12.53
SOBI	1.06	2.51	3.77	5.57	6.24	7.93	8.35	10.91	11.93	12.54