Optical fiber ultrasonic nondestructive testing based on frequency modulated continuous wave

Jie Yang; Guolu Yin; Tao Zhu

doi:10.1117/12.2654809

15 December 2022 Optical fiber ultrasonic nondestructive testing based on frequency modulated continuous wave

Jie Yang, Guolu Yin, Tao Zhu

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 1247835 (2022) https://doi.org/10.1117/12.2654809
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

Optical fiber sensing technology is gradually replacing the traditional ultrasonic monitoring sensors. In this paper, we proposed an ultrasonic nondestructive testing (NDT) method based on frequency modulated continuous wave (FMCW). It had been demonstrated that this method was capable of detecting the ultrasonic wave with a center frequency of 130kHz emitted by piezoelectric ceramic sheets, and a signal-to-noise ratio of ~15dB had been obtained on a nondestructive aluminum plate. When the system was applied to the aluminum plate with cracks of different lengths, the amplitude of the acoustic signal changed, which proved the possibility of the system for ultrasonic NDT in metal plates.

Citation Download Citation

Jie Yang, Guolu Yin, and Tao Zhu "Optical fiber ultrasonic nondestructive testing based on frequency modulated continuous wave", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 1247835 (15 December 2022); https://doi.org/10.1117/12.2654809

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