Research Article
Vibration-Based Damage Detection of a Steel-Concrete Composite Slab Using Non-Model-Based and Model-Based Methods
Table 8
Comparison of the identified and tested modal parameters for Cases 3, 4, and 5.
| | Case 3 | Case 4 | Case 5 | Mode | Exp. Freq. (Hz) | Updated Freq. (Hz) | Diff. (%) | MAC | Exp. Freq. (Hz) | Updated Freq. (Hz) | Diff. (%) | MAC | Exp. Freq. (Hz) | Updated Freq. (Hz) | Diff. (%) | MAC |
| 1st | 24.57 | 24.34 | 0.90 | 0.96 | 22.17 | 21.85 | 1.44 | 0.97 | 19.15 | 18.79 | 1.87 | 0.93 | 2nd | 31.09 | 31.65 | 1.81 | 0.96 | 30.90 | 31.42 | 1.68 | 0.94 | 28.46 | 29.28 | 2.88 | 0.91 | 3rd | 57.56 | 60.36 | 4.86 | 0.63 | 55.24 | 59.78 | 8.21 | 0.59 | 53.70 | 58.93 | 9.74 | 0.61 | 5th | 83.09 | 78.11 | 5.99 | 0.91 | 80.02 | 76.43 | 4.49 | 0.89 | 79.74 | 75.86 | 4.87 | 0.83 | 7th | 121.13 | 122.09 | 0.79 | 0.79 | 119.56 | 121.43 | 1.56 | 0.78 | 117.25 | 120.85 | 3.07 | 0.75 |
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Note., fe2 is the experimental frequency in Cases 3, 4, or 5, and fu2 is the frequency of updating model in Cases 3, 4, or 5. |