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Acta Optica Sinica, Volume. 42, Issue 2, 0206004(2022)

Influence of Interfacial Effect Between Distributed Optical Fiber Sensors and Monitored Structures

Huaping Wang1,2、*
Author Affiliations
  • 1Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, China
  • 2Key Lab of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (20)
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    References (25)
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    Figures & Tables(20)
    Type of pipe damage

    Fig. 1. Type of pipe damage

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    Local debonding and warping of inserted distributed optical fiber

    Fig. 2. Local debonding and warping of inserted distributed optical fiber

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    Cross-section structure of surface-attached distributed optical fiber

    Fig. 3. Cross-section structure of surface-attached distributed optical fiber

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    Layout design of distributed optical fiber on pipe structure

    Fig. 4. Layout design of distributed optical fiber on pipe structure

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    Cross-section profile of test model. (a) Longitudinal section; (b) transversal section

    Fig. 5. Cross-section profile of test model. (a) Longitudinal section; (b) transversal section

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    Stress state and deformation distribution of four-layer sensing model

    Fig. 6. Stress state and deformation distribution of four-layer sensing model

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    Tensile test experiment of CFRP plate attached with bare FBG and packaged FBG

    Fig. 7. Tensile test experiment of CFRP plate attached with bare FBG and packaged FBG

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    Measurement data of bare FBG and packaged FBG, data of packaged FBG modified by strain transfer coefficient

    Fig. 8. Measurement data of bare FBG and packaged FBG, data of packaged FBG modified by strain transfer coefficient

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    Tensile test experiment of CFRP pipe attached with bare FBG and silicone rubber packaged FBG

    Fig. 9. Tensile test experiment of CFRP pipe attached with bare FBG and silicone rubber packaged FBG

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    Measurement data of bare FBG and silicone rubber packaged FBG, data of packaged FBG modified by strain transfer coefficient

    Fig. 10. Measurement data of bare FBG and silicone rubber packaged FBG, data of packaged FBG modified by strain transfer coefficient

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different angles

    Fig. 11. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different angles

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different thickness of adhesive layer

    Fig. 12. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different thickness of adhesive layer

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different radius of protective layer

    Fig. 13. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different radius of protective layer

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different bonded lengths

    Fig. 14. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different bonded lengths

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different shear modulus of adhesive layer

    Fig. 15. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different shear modulus of adhesive layer

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different shear modulus of protective layer

    Fig. 16. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different shear modulus of protective layer

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    Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different elastic modulus of host material

    Fig. 17. Distribution of ratio of interfacial shear stress and stress of host material with bonded length under different elastic modulus of host material

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    Local interfacial debonding of optical fiber sensing model

    Fig. 18. Local interfacial debonding of optical fiber sensing model

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    Variation of average strain transfer coefficient with bonded length

    Fig. 19. Variation of average strain transfer coefficient with bonded length

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    • Table 1. Material and geometrical parameters of four-layer sensing model

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      Table 1. Material and geometrical parameters of four-layer sensing model

      ContentLabelValueUnit
      Young’s modulus of optical fiberEf7.2×1010N/m2
      Radius of optical fiberrf1.25×10-4m
      Shear modulus of protective layerGp6.65×107N/m2
      Radius of protective layerrp1×10-3m
      Shear modulus of adhesive layerGa2.26×107N/m2
      Thickness of adhesive layerha1×10-3m
      Half of bonded lengthL4×10-2m
      Young’s modulus of host materialEm2.06×1011N/m2
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    Huaping Wang. Influence of Interfacial Effect Between Distributed Optical Fiber Sensors and Monitored Structures[J]. Acta Optica Sinica, 2022, 42(2): 0206004

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: May. 10, 2021

    Accepted: Aug. 13, 2021

    Published Online: Dec. 29, 2021

    The Author Email: Wang Huaping (wanghuaping1128@sina.cn)

    DOI:10.3788/AOS202242.0206004

    Topics

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