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Acta Optica Sinica, Volume. 41, Issue 17, 1712003(2021)

Terahertz Nondestructive Test of Delamination Defects in Glass-Fiber-Reinforced Composite Materials

Qishu Wang1,2, Da Mu1,2、*, Tongyu Zhou1,2, Jiaojiao Ren1,2, Dandan Zhang1,2, and Yinjie Xin1,2
Author Affiliations
  • 1Key Laboratory of Optoelectronic Measurement and Optical Information Transmission Technology, Ministry of Education, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
  • 2National Demonstration Center for Experimental Opto-Electronic Engineering Education, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    References (18)
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    Figures & Tables(10)
    Optical parameters of glass fiber composite material. (a) Refractive index; (b) extinction coefficient

    Fig. 1. Optical parameters of glass fiber composite material. (a) Refractive index; (b) extinction coefficient

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    Glass fiber composite material structure

    Fig. 2. Glass fiber composite material structure

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    Optical path of terahertz wave propagating in medium. (a) Optical path of terahertz wave propagation without delamination defect; (b) optical path of terahertz wave propagation with delamination defect

    Fig. 3. Optical path of terahertz wave propagating in medium. (a) Optical path of terahertz wave propagation without delamination defect; (b) optical path of terahertz wave propagation with delamination defect

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    Reflective simulation experiment structure

    Fig. 4. Reflective simulation experiment structure

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    Terahertz time domain spectroscopy system.(a) Physical picture; (b) schematic diagram

    Fig. 5. Terahertz time domain spectroscopy system.(a) Physical picture; (b) schematic diagram

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    Time-domain waveform simulation using finite difference time domain. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample; (c) delamination defect is 5 mm away from the upper surface of the sample

    Fig. 6. Time-domain waveform simulation using finite difference time domain. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample; (c) delamination defect is 5 mm away from the upper surface of the sample

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    B-scan figures. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample;(c) delamination defect is 5 mm away from the upper surface of the sample

    Fig. 7. B-scan figures. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample;(c) delamination defect is 5 mm away from the upper surface of the sample

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    THz-TDS time-domain waveform of detected defects. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample;(c) delamination defect is 5 mm away from the upper surface of the sample

    Fig. 8. THz-TDS time-domain waveform of detected defects. (a) Without delamination defect; (b) delamination defect is 3 mm away from the upper surface of the sample;(c) delamination defect is 5 mm away from the upper surface of the sample

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    Delamination defect imaging. (a) Delamination defect is 3 mm away from the upper surface of the sample; (b) column B-scan at position 1; (c) delamination defect is 5 mm away from the upper surface of the sample; (d) column B-scan at position 2

    Fig. 9. Delamination defect imaging. (a) Delamination defect is 3 mm away from the upper surface of the sample; (b) column B-scan at position 1; (c) delamination defect is 5 mm away from the upper surface of the sample; (d) column B-scan at position 2

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    • Table 1. Delamination defect thickness and error detected by FDTD and THz-TDS system

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      Table 1. Delamination defect thickness and error detected by FDTD and THz-TDS system

      MethodDelamination defect is 3 mm away from theupper surface of the sampleDelamination defect is 5 mm away from theupper surface of the sample
      h /mmError /%h /mmError /%
      FDTD0.31354.50.30903.0
      THz-TDS0.31505.00.330010
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    Qishu Wang, Da Mu, Tongyu Zhou, Jiaojiao Ren, Dandan Zhang, Yinjie Xin. Terahertz Nondestructive Test of Delamination Defects in Glass-Fiber-Reinforced Composite Materials[J]. Acta Optica Sinica, 2021, 41(17): 1712003

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Jan. 15, 2021

    Accepted: Mar. 31, 2021

    Published Online: Sep. 3, 2021

    The Author Email: Mu Da (md_79@126.com)

    DOI:10.3788/AOS202141.1712003

    Topics

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