Free-Interface Modal Synthesis Based Substructural Damage Detection Method

Table 2

Eigen errors on Group 4.

Modes	Expected frequency (Hz)	Analytical frequency (Hz)	Differences (%)	MAC (%)
1	1.035	1.052	1.6	100
2	3.361	3.44	2.4	99.4
3	4.359	4.512	3.5	99.5
4	6.349	6.477	2	96.4
5	7.057	7.356	4.2	95.9
6	10.147	10.546	3.9	95.5
7	11.536	11.719	1.6	97.6
8	14.253	14.709	3.2	97.1