Research Article
Delamination Detection of Reinforced Concrete Decks Using Modal Identification
Table 8
Comparison of modal frequencies by ANSYS modeling and FDD of the responses of experimental specimens under random excitation.
| | — | — | 1st bending | 2nd bending | 1st bending/torsion | 3rd bending |
| | 0% delaminated | ANSYS (Hz) | 31.46 | 69.13 | 81.68 | 165.80 | | FDD (Hz) | 31.77 | 68.03 | 83.04 | 166.08 |
| | 22.2% delaminated | ANSYS (Hz) | 27.38 | 51.99 | 65.63 | 91.71 | | FDD (Hz) | 27.01 | 50.77 | — | 91.79 |
| | 51.9% delaminated | ANSYS (Hz) | 26.98 | 50.81 | 65.27 | 96.99 | | FDD (Hz) | 27.51 | 54.53 | — | 96.80 |
| | 74.1% delaminated | ANSYS (Hz) | 24.91 | 42.78 | 60.47 | 81.39 | | FDD (Hz) | 24.01 | 44.77 | — | 84.54 |
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