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

Table 5

Median values of damage measures.

𝑥-direction						𝑦-direction
DM	0.2	0.4	0.6	0.8	1.0	0.2	0.4	0.6	0.8	1.0
Frequency	0.56	1.27	1.77	2.62	5.71	0.63	1.30	2.15	3.62	5.91
Amplitude	2.05	3.15	4.18	5.20	6.14	2.00	3.16	4.21	5.10	5.97
Energy	2.72	3.80	4.74	5.46	6.14	2.74	3.87	4.69	5.37	5.97