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Nondestructive Testing and Predictability of Microcracks in Carbon Fiber-Reinforced Composites via Terahertz Time-Domain Spectroscopy

  • TERAHERTZ METHODS
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Abstract

The presence of various defects in carbon fiber-reinforced composites (CFRP) can be highly detrimental to the safety of aircrafts during their operation. Therefore, it is crucial to employ an accurate and efficient nondestructive technology to detect such defects and ensure safe operation of aircrafts. In this study, we used COMSOL Multiphysics simulation software and terahertz time-domain spectroscopy (THz-TDS) to investigate the THz spectral characteristics of manually preset microcracks in CFRP. Results showed a linear relation between the THz spectral characteristics of the microcracks, including the reflectance, time-spectral amplitude, power spectral density, absorption, and absorption coefficient, with their geometric parameters such as the length, width, and position. This relation can help predict the geometric information of the microcracks through THz-TDS, facilitating a quantitative detection of microcracks in CFRP and providing a reference for practical applications in this detection.

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Funding

This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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Authors and Affiliations

  1. Institute of Electronic and Electrical Engineering, Civil Aviation Flight University of China, 618307, Sichuan, Deyang, China

    Zhong Mian, Xiang Hongxing, Yang Ming, Lei Xia, Tu Xiaoguang & Zhou Chao

  2. Sichuan General Aircraft Maintenance Engineering and Technology Research Center, 618307, Sichuan, Deyang, China

    Zhong Mian, Li Fei, Yang Ming & Xu Yajun

  3. Key Laboratory of Flight Techniques and Flight Safety, CAAC, 618307, Sichuan, Deyang, China

    Li Shouqing

  4. Shenzhen Institute of Terahertz Technology and Innovation, 518110, Guangdong, Shenzhen, China

    Wang Zhiqi & Li Chen

  5. Discipline Construction Office, Civil Aviation Flight University of China, 618307, Sichuan, Deyang, China

    Zhao Xin

  6. Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Guangdong, Shenzhen, China

    Wei Dongshan

Authors
  1. Zhong Mian
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  2. Xiang Hongxing
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  3. Li Fei
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  4. Yang Ming
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  5. Li Shouqing
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  6. Lei Xia
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  7. Tu Xiaoguang
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  8. Wang Zhiqi
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  9. Li Chen
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  10. Zhao Xin
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  11. Wei Dongshan
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  12. Xu Yajun
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  13. Zhou Chao
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Corresponding authors

Correspondence to Zhao Xin or Wei Dongshan.

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Mian, Z., Hongxing, X., Fei, L. et al. Nondestructive Testing and Predictability of Microcracks in Carbon Fiber-Reinforced Composites via Terahertz Time-Domain Spectroscopy. Russ J Nondestruct Test 60, 96–103 (2024). https://doi.org/10.1134/S1061830923600818

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  • DOI: https://doi.org/10.1134/S1061830923600818

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