Inspection of polyethylene gas pipe defect based on terahertz time domain spectroscopy

Qiang Chen D.V.M.; Qiang Wang; Yue Yu III; XiaoHong Gu IV; Zhangwei Ling V

doi:10.1117/12.2506393

15 November 2018 Inspection of polyethylene gas pipe defect based on terahertz time domain spectroscopy

Qiang Chen D.V.M., Qiang Wang, Yue Yu III, XiaoHong Gu IV, Zhangwei Ling V

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109645N (2018) https://doi.org/10.1117/12.2506393
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

Polyethylene gas pipe sample with defects was detected by the transmission THz-TDS system. Firstly, the difference of the THz time-domain waveform and corresponding frequency spectra between the defect part and non-defect part was compared. Then, the PE pipe defects were imaged by the maximum value of THz time-domain data and the frequency-domain data. The results show that the existence of defects cause obvious reduction the maximum value of the THz time-domain spectrum. The PE defects can be clearly distinguished from the non-defect part by the transmission THz images. Imaged by the THz timed-domain and the frequency-domain parameter can reveal the defects in the polyethylene gas pipe.

Citation Download Citation

Qiang Chen D.V.M., Qiang Wang, Yue Yu III, XiaoHong Gu IV, and Zhangwei Ling V "Inspection of polyethylene gas pipe defect based on terahertz time domain spectroscopy", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109645N (15 November 2018); https://doi.org/10.1117/12.2506393

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KEYWORDS

Terahertz radiation

Terahertz spectroscopy

Inspection

Nondestructive evaluation

Spectroscopy

Composites

Imaging spectroscopy

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