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Laser & Optoelectronics Progress, Volume. 60, Issue 15, 1512004(2023)

Inspection of Wind Turbine Blades Based on Modified Thermoelastic Stress Analysis Using Thermal Detection of Infrared Radiation

Peng Zhang1, Yu Zhang1、*, Kun Cui1, Jiaxing Ma2, and Song Mei2
Author Affiliations
  • 1College of Safety and Ocean Engineering, China University of Petroleum (Beijing), Beijing 102249, China
  • 2CNOOC Clean Energy Branch of Energy Development Co., Ltd., Tianjin 300450, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (17)
    Equations (9)
    References (21)
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    Paper Information
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    Figures & Tables(17)
    Overall scheme of the experiment

    Fig. 1. Overall scheme of the experiment

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    Sample size

    Fig. 2. Sample size

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    Diagram of experimental setup

    Fig. 3. Diagram of experimental setup

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    Temperature change of sample monitoring point under 1 Hz frequency

    Fig. 4. Temperature change of sample monitoring point under 1 Hz frequency

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    Comparison of temperature difference and stress between experiment and modified model

    Fig. 5. Comparison of temperature difference and stress between experiment and modified model

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    Comparison of modified model results with reference results

    Fig. 6. Comparison of modified model results with reference results

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    Wind turbine blade model based on BLADE

    Fig. 7. Wind turbine blade model based on BLADE

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    BLADED wind turbine model

    Fig. 8. BLADED wind turbine model

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    Blade thrust at rated wind speed

    Fig. 9. Blade thrust at rated wind speed

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    Finite element model of wind turbine blade

    Fig. 10. Finite element model of wind turbine blade

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    Diagram of blade stress

    Fig. 11. Diagram of blade stress

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    Sum of principal stresses of wind turbine blade

    Fig. 12. Sum of principal stresses of wind turbine blade

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    Temperature of wind turbine blade

    Fig. 13. Temperature of wind turbine blade

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    • Table 1. Basic parameters of epoxy resin

      View table

      Table 1. Basic parameters of epoxy resin

      ParameterValue
      Elastic modulus /GPa2.75
      Density /（g·cm-3）1.1
      Poisson’s ratio0.38
      Specific heat capacity /（J·Kg-1·℃-1）220
      Expansion coefficient /℃-150×10-6
      Thermal conductivity /（W·m-1·℃-1）0.2

    • Table 2. Basic parameters of wind turbine blades

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      Table 2. Basic parameters of wind turbine blades

      Cross-sectional pointsDistance from root /mChord length /mTwist angle /（°）Relative thickness /%
      102.6913100
      21.612.6913100
      33.232.941386.4
      44.843.481366.8
      56.454.041352.5
      68.64.4412.939.7
      ⋮⋮⋮⋮⋮
      19570.04411

    • Table 3. Basic parameters of wind turbine

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      Table 3. Basic parameters of wind turbine

      ParameterValue
      Wind speed /（m/s）5，10，15，20，25
      Power rating /MW5
      Wind turbine diameter /m119
      Number of blades3
      Hub height /m92
      Blade mounting angle /（°）-3
      Taper angle /（°）0
      Elevation angle /（°）4
      Rated wind speed /（m/s）11.4

    • Table 4. Material properties

      View table

      Table 4. Material properties

      PropertyCFRPGFRP
      E1 /GPa164.5441
      E2，E3 /GPa10.159
      G12,G13 /GPa4.984.1
      G23 /GPa3.894.1
      Xt /MPa1860.2440.9
      Xc /MPa1038.6569.1
      Yt /MPa65.4933.5
      Yc /MPa132.5885.7
      S12 /MPa90.8551.6
      S13,S23 /MPa90.8551.6
      μ12,μ130.3060.3
      μ230.30.3
      Density /（kg/m3）15601890
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    Peng Zhang, Yu Zhang, Kun Cui, Jiaxing Ma, Song Mei. Inspection of Wind Turbine Blades Based on Modified Thermoelastic Stress Analysis Using Thermal Detection of Infrared Radiation[J]. Laser & Optoelectronics Progress, 2023, 60(15): 1512004

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Apr. 14, 2023

    Accepted: May. 19, 2023

    Published Online: Aug. 11, 2023

    The Author Email: Yu Zhang (zhangyu@cup.edu.cn)

    DOI:10.3788/LOP231086

    Topics

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