Influence of thermal stress on temperature sensitivity of FBG-GFRP bars

Abstract

The influence of thermal stress on the temperature sensitivity of fiber Bragg grating-glass fiber reinforce polymer (FBGGFRP) bars is studied by three methods, namely, direct experimental calibration method, stress analysis (finite element analysis) method and the method of apparent temperature sensitivity coefficient. In comparison with the other two methods, fewer parameters are required and the calculation is simple in the method of apparent temperature sensitivity coefficient, while the analytical error is limited within 2%. It is concluded that the results of the method of apparent temperature sensitivity coefficient could be good reference for engineering applications.

Keywords

Axial Stress / Temperature Sensitivity / Fiber Bragg Grating / Glass Fiber Reinforce Polymer / Fiber Bragg Grating Sensor

References

[1] WuY., ShaoC., Quw., ZhouW., CaiH.. Journal of Optoelectronics · Laser, 2010, 21: 481

[2] XieJ., ZhangH., SongL.. Piezoelectrics and Acoustooptics, 2007, 29: 261

[3] WangY., ZhouZ., HaoQ., OuJ.. Journal of Optoelectronics · Laser, 2007, 18: 900

[4] KalamkarovA.L., LiuH.Q., MacDonaldD.O.. Comp. Part B, 1998, 29B: 21

[5] JiaZ.-a., QiaoX.-g., FuH.-w.. Journal of Optoelectronics · Laser, 2003, 14: 453

[6] ZhangX., WuZ., ZhangB.. Journal of Optoelectronics · Laser, 2005, 16: 566

[7] LiZ., WangX., YangH.. Journal of Optoelectronics · Laser, 2006, 17: 1191

[8] XieJ., ZhangH., ZhangG., HuR., XuJ.. Journal of Optoelectronics · Laser, 2008, 19: 1158

[9] XieJ., ZhangH., SongL.. Microcomputer Information, 2007, 23: 150

[10] FabianoC., LaurentH., JohnB.. Composites Science and Technology, 2007, 67: 1830

[11] Kin-takL., ZhouL., TaoX.. Composite Structures, 2002, 58: 39

[12] Kin-takL., YuanL., ZhouL.. Smart Materials and Structions, 2001, 10: 705

[13] GilesC. R.. Journal of Lightwave Technology, 1997, 15: 1391

[14] LiC., ZhangY., ZhaoY.. Fiber Grating: Principles, Techniques and Sensing Applications, 2005, Beijing, Sciencep: 163