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Yun, Chung Bang
Structural Dynamics Lab
Research Interests
  • Structural dynamics

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Field application of elasto-magnetic stress sensors for monitoring of cable tension force in cable-stayed bridges

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Title
Field application of elasto-magnetic stress sensors for monitoring of cable tension force in cable-stayed bridges
Author
Yim, JinsukWang, Ming L.Shin, Sung WooYun, Chung BangJung, Hyung-JoKim, Jeong-TaeEem, Seung-Hyun
Keywords
stress sensing; elasto-magnetic sensor; cable tension force monitoring; cable-stayed bridge; structural health monitoring
Issue Date
201309
Publisher
TECHNO-PRESS
Citation
SMART STRUCTURES AND SYSTEMS, v.12, no.3-4, pp.465 - 482
Abstract
Recently, a novel stress sensor, which utilizes the elasto-magnetic (EM) effect of ferromagnetic materials, has been developed to measure stress in steel cables and wires. In this study, the effectiveness of this EM based stress sensors for monitoring of the cable tension force of a real scale cable-stayed bridge was investigated. Two EM stress sensors were installed on two selected multi-strand cables in Hwa-Myung Bridge, Busan, South Korea. Conventional lift-off test was conducted to obtain reference cable tension forces of two test cables. The reference forces were used to calibrate and validate cable tension force measurements from the EM sensors. Tension force variations of two test cables during the second tensioning work on Hwa-Myung Bridge were monitored using the EM sensors. Numerical simulations were conducted to compare and verify the monitoring results. Based on the results, the effectiveness of EM sensors for accurate field monitoring of the cable tension force of cable-stayed bridge is discussed.
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DOI
http://dx.doi.org/10.12989/sss.2013.12.3-4.465
ISSN
1738-1584
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UEE_Journal Papers
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