A new kind of smart hybrid FRP-concrete beam based on FBG sensors
Fiber Bragg Grating (FBG) sensor is broadly accepted as a structural health monitoring device for fiber reinforced polymer (FRP) materials by either embedding into or bonding onto the structures. A new kind of smart hybrid FRP-concrete beam was developed by using embedded FBG sensors. Firstly, fabrication process of the smart hybrid FRP-concrete beam was introduced. Subsequently, FRP laminates with embedded FBG sensors, which have the same stacking sequences as that of the smart hybrid beam, were fabricated and tested on material test system to determine the strain sensitivity coefficients of the smart hybrid beams. Finally, the proposed smart hybrid FRP-concrete beam was tested in 4-point bending to verify the operation of FBG sensors embedded in the smart beam. The experimental results indicate the strain sensing property of the laminates with embedding FBG sensors is nearly the same as that of bare FBG sensor, and the output of embedded FBG sensors in the smart beam agrees well with that of surface-bonded strain gauges over the entire load range. The proposed smart hybrid FRP-concrete beam can reveal the true internal strain of itself in its service life and will have wide applications for long-term monitoring in civil engineering.
FRP FBG sensors smart structure hybrid FRP-concrete beam strain sensing
Yanlei Wang Qingduo Hao Jinping Ou
School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China;School
国际会议
第六届国际振动工程会议(The 6th International Conference on Vibration Engineering)(ICVE’ 2008)
大连
英文
2008-06-04（万方平台首次上网日期，不代表论文的发表时间）