A Study on Instantaneous Time-Frequency Methods for Damage Detection of Nonlinear Moment-Resisting Frames

Table 1

Statistical variables of extracted frequencies.

	HHT	TEO	HEO	DQ
Mean	3.764	3.417	1.992	2.804
Median	2.846	2.323	1.393	0.738
Std.	15.571	13.963	3.346	89.918
RMS	16.019	14.375	3.894	89.960
Range	527.4	1942.3	340.2	8759.7
𝐾-factor	8448.6	27920.8	1324.9	731797.6