Study on fabrication of smart FRP-OFBG composite laminates and their sensing properties

Yanlei Wang; Zhi Zhou; Jinping Ou

doi:10.1117/12.725913

5 March 2007 Study on fabrication of smart FRP-OFBG composite laminates and their sensing properties

Yanlei Wang, Zhi Zhou, Jinping Ou

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65952W (2007) https://doi.org/10.1117/12.725913
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

Fiber reinforced polymer (FRP) has gained much attention in civil engineering due to its high strength-to-weight and stiffness-to-weight ratios, corrosion resistance and good fatigue resistance. Optical Fiber Bragg Grating (OFBG) is now widely accepted as smart sensor due to its advantages of electric-magnetic resistance, small size, distributed sensing, durability, and so on. Combined the FRP with OFBG, new kind of smart FRP-OFBG composite laminates was developed. Fabrication method of the smart composite laminates was introduced in this paper. The study presented the basic principle of OFBG sensors. Then the strain and temperature sensing properties of the proposed smart FRP-OFBG composite laminates were experimentally studied on material test system and under hot water, respectively. The experimental results indicate the strain sensing properties of the smart FRP-OFBG composite laminates are nearly the same as that of bare OFBG, however, the temperature sensing abilities of the smart FRP-OFBG composite laminates are improved and the sensitivity coefficient is nearly 3.2 times as much as that of bare OFBG. The strain and temperature sensing precisions of the smart FRP-OFBG composite laminates are 1 &mgr;&Vegr; and 0.03 °C, respectively. The smart FRYOFBG composite laminates are very proper for application in civil engineering.

Citation Download Citation

Yanlei Wang, Zhi Zhou, and Jinping Ou "Study on fabrication of smart FRP-OFBG composite laminates and their sensing properties", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65952W (5 March 2007); https://doi.org/10.1117/12.725913

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