A New Transmissibility Based Indicator of Local Variation in Structure and Its Application for Damage Detection

Table 2

Comparison of natural frequencies of intact and damaged cantilever beam with different crack depth ratios.

	First mode			Second mode			Third mode
	Intact	Damaged	Rel. (%)	Intact	Damaged	Rel. (%)	Intact	Damaged	Rel. (%)
0.1	4.147	4.127	0.484	11.613	11.521	0.791	22.773	22.766	0.031
0.2	4.147	4.108	0.941	11.613	11.437	1.518	22.773	22.760	0.057
0.3	4.147	4.091	1.352	11.613	11.363	2.153	22.773	22.756	0.078
0.4	4.147	4.076	1.699	11.613	11.302	2.677	22.773	22.752	0.095