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Title |
Development of a Convergence Monitoring Method for Cylindrical Structures by Optical Fiber Bragg Grating Sensor
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Keywords |
광섬유 FBG센서 ; 이방향 변위계측시스템 ; 변형각 환산 ; 상대좌표 계측알고리즘 FBG Sensor ; Geometrical Displacement ; Tunnel Lining |
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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.
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