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Laser & Optoelectronics Progress, Volume. 55, Issue 11, 110604(2018)

Strain Transfer Mechanism of End-Bonding Fibre Bragg Grating Sensors Based on Linear Viscoelasticity

Guang Chen1,2、*, Keqin Ding1, Qibo Feng2, and Zhan Gao2
Author Affiliations
  • 1 China Special Equipment Inspection and Research Institute, Beijing 100029, China
  • 2 School of Science, Beijing Jiaotong University, Beijing 100044, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (23)
    Cited By (6)
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    Figures & Tables(9)
    Schematic of surface adhesive and end-bonding FBG sensor

    Fig. 1. Schematic of surface adhesive and end-bonding FBG sensor

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    Side view of bare FBG bonded on matrix surface

    Fig. 2. Side view of bare FBG bonded on matrix surface

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    Schematic of strain transfer

    Fig. 3. Schematic of strain transfer

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    Standard linear solid model

    Fig. 4. Standard linear solid model

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    Influences of adhesive layer parameters on strain transfer rate. (a) Length; (b) width; (c) Young's modulus; (d) thickness of lower part

    Fig. 5. Influences of adhesive layer parameters on strain transfer rate. (a) Length; (b) width; (c) Young's modulus; (d) thickness of lower part

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    Finite element meshes

    Fig. 6. Finite element meshes

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    Comparison between theoretical solutions and results obtained by FEM

    Fig. 7. Comparison between theoretical solutions and results obtained by FEM

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    • Table 1. Physical parameters of optical fiber

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      Table 1. Physical parameters of optical fiber

      Material parameterValue
      Young's modulus Eg /(1010 Pa)7.2
      Radius rg /nm62.5

    • Table 2. Physical parameters of adhesive layer

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      Table 2. Physical parameters of adhesive layer

      Material parameterValue
      Poisson's ratio υ0.24-0.44
      Young's modulus Ea /(109 Pa)0.05-4.00
      Single bonding length L /mm0.1-2.0
      Bonding width D /mm0.5-4.0
      Bonding height H /mm0-2.5
      Lower thickness h /mm0.1-2.0
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    Guang Chen, Keqin Ding, Qibo Feng, Zhan Gao. Strain Transfer Mechanism of End-Bonding Fibre Bragg Grating Sensors Based on Linear Viscoelasticity[J]. Laser & Optoelectronics Progress, 2018, 55(11): 110604

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: --

    Accepted: --

    Published Online: Aug. 14, 2019

    The Author Email: Guang Chen (chenguang015@163.com)

    DOI:10.3788/LOP55.110604

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology