Crack Width Analysis of Reinforced Concrete Using FBG Sensor

IEEE Photonics Journal

Jun Song¹  Honggang Wang²  Yaozhang Sai²  Lili Wang² 

[1] School of Civil Engineering, Ludong University, Yantai, China;School of Information and Electrical Engineering, Ludong University, Yantai, China;

关键词: Crack width;    FBG;    finite element computation.;   

DOI  :  10.1109/JPHOT.2019.2891267

来源: DOAJ

【 摘 要 】

According to the reflection behavior of the fiber Bragg grating, the monitoring method of reinforced concrete was presented in this paper. A postprocessing method to extract crack openings from a three-dimension finite element computation was proposed. The three-axial stresses of the FBG were extracted also from the same finite element computation, and then, were converted as a wavelength deformation of the FBG reflected spectrum. The three-dimension computation result of crack width versus the FBG spectrum deformation was investigated using laboratory experiments. The results showed that the numerical values approximated the experimental ones.

【 授权许可】

Unknown