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

Figure 19

Time histories, TFFs and the FFT spectra of interstory displacements of the structure under PGA = 715 gal El Centro ground motion (Case 5). (a) Story 1, (b) Story 2, (c) Story 3, (d) Story 4, (e) Story 5, (f) Story 6, (g) Story 7, (h) Story 10, and (i) Story 15.

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