11803 SI-F法による橋梁構造の疲労き裂モニタリング(モニタリング・設計工学,一般講演,学術講演)

概要

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The present study is about an unsupervised damage diagnostic method for the structural health monitoring named as SI-F method. In the proposed method, structural condition is diagnosed without information about damaged condition. The proposed method statistically diagnoses structural condition by means of investigating the change of a response surface. The shape of the response surface is changed reflecting the change of the structural condition. In this method, the change of the response surface is statistically investigated with the F-test. The proposed method doesn't require information about the damaged condition. In the present study, SI-F method is applied to fatigue crack monitoring of bridge type specimen. Damage detection using SI-F is conducted from the data measured by the strain gages, the FBGs and the accelerometers. As the result, the occurrence of the fatigue crack is successfully detected by the method before the visual inspection.
社団法人日本機械学会の論文
2008-03-13