Anomaly Detection of Bridges Based on Bayesian Inference of Multivariate Auto-Regressive Model
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- GOI Yoshinao
- Department of Civil and Earth Resources Engineering, Kyoto University
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- KIM Chul-Woo
- Department of Civil and Earth Resources Engineering, Kyoto University
Bibliographic Information
- Other Title
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- 橋梁振動の多変量自己回帰モデルのベイズ推論に基づく異常検知
- キョウリョウ シンドウ ノ タヘンリョウ ジコ カイキ モデル ノ ベイズ スイロン ニ モトズク イジョウ ケンチ
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Abstract
<p>This study proposes an anomaly detection method for bridges using Bayesian inference, aiming at efficient inspection based on vibration monitoring. In the proposed method, firstly a posterior distribution of the parameters composing multivariate auto-regressive model is acquired from a bridge under healthy condition by means of Bayesian inference. Secondly, based on the posterior distribution representing vibration of the healthy bridge, a Bayes factor is calculated to detect change in the modal properties caused by damage. To investigate feasibility of the proposed method for damage detection, this study utilized data from a field experiment on an actual steel truss bridge whose truss member was artificially severed. The proposed method detected two different damage levels successfully. A damage indicator previously investigated by the authors is also evaluated with respect to the experimental data, and compared with the proposed method.</p>
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 67 (2), 143-150, 2018
The Society of Materials Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205445561216
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- NII Article ID
- 130006386419
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 028853981
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed