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A Study on Applicability of Wireless Impedance Sensor Nodes Technique for Tensile Force Monitoring of Structural Cables  

Park, Jae-Hyung (부경대학교 해양공학과)
Hong, Dong-Soo (부경대학교 해양공학과)
Kim, Jeong-Tae (부경대학교 해양공학과)
Na, Won-Bae (부경대학교 해양공학과)
Cho, Hyun-Man (부경대학교 해양공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.22, no.1, 2010 , pp. 21-31 More about this Journal
Abstract
In this study, a technique that uses wireless impedance sensor nodes is proposed to monitor tensile force of structural cable. To achieve this goal, the following approaches were implemented. First, a wireless impedance sensor node was designed for automated and cost-efficient prestress-loss monitoring. Second, an impedance-based algorithm was embedded in the wireless impedance sensor node for autonomous structural health monitoring of structural cables. Third, a tensile force monitoring technique that uses an interface plate for structural cables was proposed to overcome the limitations of the wireless impedance sensor node such as its narrow-band measurable frequency ranges. Finally, the applicability of the wireless impedance sensor node and the technique that uses the interface washer were evaluated in a lab-scaled prestressed concrete (PSC) girder model with internal and external tendons for which several prestress-loss scenarios were experimentally monitored with the wireless impedance sensor nodes.
Keywords
wireless sensor node; impedance; structural cable; tensile force; interface washer; structural health monitoring;
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Times Cited By KSCI : 4  (Citation Analysis)
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