Hidden Damage Detection for Main Cables of Suspension Bridges Incorporating DC Magnetization with a Search Coil-Based B-H Loop Measurement

Ju-Won Kim 1 Seunghee Park 1 Dae-Joong Moon 2
1 SKKU - Sungkyunkwan University [Suwon]
2 EJtech
Abstract : Recently, there have been lots of research and development activities to confirm the reliability in terms of the healthy condition for hanger cables of suspension bridges. However, little research about non-destructive evaluation (NDE) techniques for main cable of the suspension bridges has been carried out. In this context, this study proposes a new methodology incorporating DC magnetization with a search coil-based total flux measurement to investigate the loss of the cross section of the main cable due to corrosion damage. From the hysteresis curve of the magnetized main cable measured at the search coil of the proposed NDE equipment, a quantification algorithm to estimate the loss rate of the main cablesÕ cross section is induced. The feasibility of the proposed NDE methodology is verified throughout an experimental study using a real scaled cable specimen with artificially inflicted broken wires.
Keywords : Electromagnetic sensors Damage detection and localization Civil engineering SHM applications
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Soumis le : jeudi 10 juillet 2014 - 09:57:55
Dernière modification le : jeudi 10 juillet 2014 - 10:36:45
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Ju-Won Kim, Seunghee Park, Dae-Joong Moon. Hidden Damage Detection for Main Cables of Suspension Bridges Incorporating DC Magnetization with a Search Coil-Based B-H Loop Measurement. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01022028〉

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