• Chinese Journal of Lasers
  • Vol. 44, Issue 4, 410001 (2017)
Qin Heying1、2、*, Zhu Wanxu1、2、3, Zhang Heli1、2, Zhou Zhi4, and Ou Jinping3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    DOI: 10.3788/cjl201744.0410001 Cite this Article Set citation alerts
    Qin Heying, Zhu Wanxu, Zhang Heli, Zhou Zhi, Ou Jinping. Manufacturing and Performance Analysis of Intelligent Steel Strand Embedded with Prepressure Large Scale Fiber Bragg Grating Sensor[J]. Chinese Journal of Lasers, 2017, 44(4): 410001 Copy Citation Text show less

    Abstract

    An intelligent steel stand is designed, which is set a groove on the steel stand center wire and embedded with fiber Bragg grating (FBG) sensor under the state of the center wire holding a certain load. FBG sensor can generate a certain strain before serving. Thus, the problems of low survival rate and limited monitoring range of FBG sensor can be solved. Based on the theoretical analysis of the strain transfer rate between embedded FBG sensor and substrate, the cross-sectional size of the groove, the bond length of the sensor and the elastic modulus of the packaging material are proposed to meet the designed requirements. Tensile experiments for the FBG intelligent steel strand are carried out in different monitoring ranges according to different holding values. The results show that the experimental data has good linearity and repeatability. When the holding value reaches 30% of the ultimate bearing capacity of the center wire, the monitoring range of FBG sensor is close to the limit tension of the steel strand. The monitoring for whole life cycle of steel strand can be achieved.
    Qin Heying, Zhu Wanxu, Zhang Heli, Zhou Zhi, Ou Jinping. Manufacturing and Performance Analysis of Intelligent Steel Strand Embedded with Prepressure Large Scale Fiber Bragg Grating Sensor[J]. Chinese Journal of Lasers, 2017, 44(4): 410001
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