Seismic Damage Detection of Moment Resisting Frame Structures Using Time-Frequency Features

Figure 24

FDs of the TFFs of interstory displacements of the structure under Northridge ground motion for Cases 6–10. (a) Case 6, (b) Case 7, (c) Case 8, (d) Case 9, and (e) Case 10.

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(b)

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(d)

(e)