Numerical simulation of rail surface defect detection with laser-induced ultrasound

Hao Sui; Xiaorong Gao; Hongna Zhu; Lin Luo; Jinli Zhang; Zhenyu Zhu; Jianping Peng

doi:10.1117/12.2548897

20 December 2019 Numerical simulation of rail surface defect detection with laser-induced ultrasound

Hao Sui, Xiaorong Gao, Hongna Zhu, Lin Luo, Jinli Zhang, Zhenyu Zhu, Jianping Peng

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112093J (2019) https://doi.org/10.1117/12.2548897
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

The detection of rail surface defects is of great significance for railway safety. To detect the rail surface defect, the laserinduced ultrasonic rail propagation model is established by the finite element method. The intrinsic relationship between the defect depth, of the defect on rail surface and the acoustic surface wave is investigated by discussing the variation of the reflected wave and the transmitted wave both in the time and frequency domain, respectively. Quantitative evaluation of defect depth is given based on the energy of the reflected and transmitted wave, which providing a promising theoretical way for the estimation of the rail surface defect feature.

Citation Download Citation

Hao Sui, Xiaorong Gao, Hongna Zhu, Lin Luo, Jinli Zhang, Zhenyu Zhu, and Jianping Peng "Numerical simulation of rail surface defect detection with laser-induced ultrasound", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112093J (20 December 2019); https://doi.org/10.1117/12.2548897

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