Research Article
Direct Index Method of Beam Damage Location Detection Based on Difference Theory of Strain Modal Shapes and the Genetic Algorithms Application
Table 1
Damage location indices.
| Damage location | Order | Damage degree | 6.25% | 12.5% | 25% | 31.25% |
| Quarter span | First order | | | | | | 0.0018 | 0.0049 | 0.0111 | 0.0159 | | 0.0048 | 0.0092 | 0.0197 | 0.0238 | | 0.0011 | 0.0013 | 0.0114 | 0.0167 | | | | 0.0016 | 0.0022 | | | | 0.0010 | | Second order | | | | | | 0.0162 | 0.0205 | 0.0673 | 0.1003 | | 0.0202 | 0.0497 | 0.1054 | 0.1647 | | 0.0137 | 0.0162 | 0.0655 | 0.0997 | | | 0.0127 | 0.0000078 | 0.0035 | | | | 0.0122 | 0.0105 | | | | | 0.0154 | Third order | | | | | | 0.0787 | 0.0877 | 0.1005 | 0.1335 | | 0.0110 | 0.0661 | 0.1699 | 0.2660 | | 0.0457 | 0.0754 | 0.0885 | 0.1821 | | 0.0544 | 0.0539 | 0.0649 | 0.0644 | | | 0.0701 | 0.0707 | 0.0753 |
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Note: overstriking index and overstriking data correspond to damage location.
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