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Acta Optica Sinica, Volume. 40, Issue 17, 1711001(2020)

THz Multi-Feature Parameter Imaging of Bonding Defects of High Temperature Composite Materials

Weihua Xiong1,2, Lijuan Li1,2、*, Jiaojiao Ren1,2, Jian Gu1,2, and Dandan Zhang1,2
Author Affiliations
  • 1Key Laboratory of Optoelectric Measurement and Optical Information Transmission Technology of Ministry of Education, School of Opto-Electrnic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
  • 2National Demonstration Center for Experimental Opto-Electronic Engineering Education, Changchun University of Science and Technology, Changchun, Jilin 130022, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (12)
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    Figures & Tables(9)
    Schematic diagram of sample structure of high temperature composite material. (a) High temperature composite material structure; (b) upper and lower layer defects of high temperature composite material

    Fig. 1. Schematic diagram of sample structure of high temperature composite material. (a) High temperature composite material structure; (b) upper and lower layer defects of high temperature composite material

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    Schematic of reflective terahertz

    Fig. 2. Schematic of reflective terahertz

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    Introduction of high temperature composite material samples

    Fig. 3. Introduction of high temperature composite material samples

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    THz time-domain waveform of feature extraction from different parts of high temperature composite material. (a) Normal bonding area of upper layer; (b) defect bonding area of upper layer; (c) normal bonding area of lower layer; (d) debonding area of lower layer

    Fig. 4. THz time-domain waveform of feature extraction from different parts of high temperature composite material. (a) Normal bonding area of upper layer; (b) defect bonding area of upper layer; (c) normal bonding area of lower layer; (d) debonding area of lower layer

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    Experimental imaging results of the upper layer preset defects. (a) Variance imaging; (b) peak-to-peak imaging; (c) energy imaging; (d) coefficient of variation imaging;(e) mean imaging; (f) multi-feature parameter imaging

    Fig. 5. Experimental imaging results of the upper layer preset defects. (a) Variance imaging; (b) peak-to-peak imaging; (c) energy imaging; (d) coefficient of variation imaging;(e) mean imaging; (f) multi-feature parameter imaging

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    Physical picture of sample defects. (a) Physical image of the sample defect is not extracted; (b) physical image of the sample defect is extracted

    Fig. 6. Physical picture of sample defects. (a) Physical image of the sample defect is not extracted; (b) physical image of the sample defect is extracted

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    Experimental imaging results of the lower layer preset defects. (a) Kurtosis imaging; (b) minimum imaging; (c) amplitude imaging; (d) energy imaging; (e) multi-feature parameter imaging

    Fig. 7. Experimental imaging results of the lower layer preset defects. (a) Kurtosis imaging; (b) minimum imaging; (c) amplitude imaging; (d) energy imaging; (e) multi-feature parameter imaging

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    • Table 1. Relative area of defects in different imaging methods%

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      Table 1. Relative area of defects in different imaging methods%

      Imaging methodUp defectrelative areaRight defectrelative areaDown defectrelative areaLeft defectrelative area
      Peak-to-peak imaging25.69.1050.982.6
      Coefficient of variation imaging8.318.102.069.1
      Energy imaging26.80.2636.571.2
      Mean imaging18.411.707.520.8
      Variance imaging46.51.9050.982.6
      Multi-feature imaging7.50.082.352.0

    • Table 2. Comparison of image quality

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      Table 2. Comparison of image quality

      Imaging methodSizing image contrastImaging methodContrast image
      Minimum imaging0.012801Minimum imaging0.001602
      Peak-to-peak imaging0.021021Energy imaging0.008234
      Maximum imaging0.010086Kurtosis imaging0.020341
      Energy imaging0.004179Amplitude imaging0.012108
      Mean imaging0.002157Multi-feature parameter imaging0.042651
      Variance imaging0.000162
      Multi-feature parameter imaging0.054768
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    Weihua Xiong, Lijuan Li, Jiaojiao Ren, Jian Gu, Dandan Zhang. THz Multi-Feature Parameter Imaging of Bonding Defects of High Temperature Composite Materials[J]. Acta Optica Sinica, 2020, 40(17): 1711001

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    Paper Information

    Category: Imaging Systems

    Received: Apr. 3, 2020

    Accepted: Jun. 2, 2020

    Published Online: Aug. 24, 2020

    The Author Email: Li Lijuan (custjuan@126.com)

    DOI:10.3788/AOS202040.1711001

    Topics

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