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

Table 2

Statistical variables for different sampling frequencies.

Sampling freq. (Hz)	25	50	100	200	400	800
Mean	3.278	3.206	3.614	3.646	3.764	3.764
Median	2.840	2.827	2.837	2.835	2.844	2.846
Std.	12.211	12.052	14.823	15.267	15.568	15.571
RMS	12.608	12.442	15.253	15.698	16.016	16.019
Range	523.7	523.7	527.4	527.4	527.4	527.4
𝐾-factor	6603.1	6516.2	8044.4	8279.5	8446.8	8448.6