The Health Monitoring Method of Concrete Dams Based on Ambient Vibration Testing and Kernel Principle Analysis

Table 3

The identified natural frequencies of dam.

Mode orders	1	2	3	4	5	6	7	8	9	10
FEM	1.01	3.24	3.84	4.38	7.43	7.87	8.98	9.03	10.99	12.45
HJAD	1.05	3.14	—	4.22	7.70	—	8.74	9.10	10.76	12.29