Research Article
Damage Detection of Structures for Ambient Loading Based on Cross Correlation Function Amplitude and SVM
Table 6
The damage patterns of truss structure.
| | Damage pattern | Description | Natural frequency |
| | Pattern 0 | Undamaged | 20.51 Hz | | Pattern 1 | The bolts in the b5 connected b1, b3, and b7 are loosened | 16.6 Hz | | Pattern 2 | The bolts in the joint connected b1, b3, and b7 are loosened | 16.6 Hz | | Pattern 3 | The bolts in b1 connected with b3 are loosened | 17.58 Hz | | Pattern 4 | The bolts in b7 connected with b1 and b3 are loosened | 20.51 Hz | | Pattern 5 | A bottom column on the other side of structure is broken | 20.51 Hz |
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