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Development of a Convergence Monitoring Method for Cylindrical Structures by Optical Fiber Bragg Grating Sensor  

Lho, Byeong-Cheol (상지대학교 건설시스템공학과)
Kim , Jong-Woo (상지대학교 건설시스템공학과)
Kang , Suck-Hwa (동양시멘트(주))
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.4, 2006 , pp. 160-166 More about this Journal
Abstract
Optical Fiber Bragg Grating sensor has a good performance to measure microscopic displacement which can measure strain of lining concrete and cylindrical structure like high intensity containment building and it can present many advantages like a corrosion resistance from the durability point of view. Then it can measure plane geometrical displacement of cylindrical structures with two-way displacement FBG sensor module. According to the test result, measurement of FBG sensor is better performance than other electric sensor system and 2D-level measurement. As a test result, Resolution of the two-way displacement sensor module with FBG sensors are more 10 times than other LVDT or 2D surveying.
Keywords
FBG Sensor; Geometrical Displacement; Tunnel Lining;
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