Laser scatterometry for detection of squat defects in railway rails

Piotr Lesiak; Tadeusz Szumiata; Marek Wlazło

doi:10.5604/08669546.1160926

Authors

Piotr Lesiak University of Technology and Humanities in Radom, Faculty of Transport and Electrical Engineering, Radom, Poland Author
Tadeusz Szumiata University of Technology and Humanities in Radom, Faculty of Mechanical Engineering, Radom, Poland Author
Marek Wlazło University of Technology and Humanities in Radom, Faculty of Transport and Electrical Engineering, Radom, Poland Author

DOI:

https://doi.org/10.5604/08669546.1160926

Keywords:

railway rails, squat defects, laser scatterometry

Abstract

The paper concerns a defectoscopy of squats occurring on the surface of the rail head. Disadvantages of traditional methods being used in detection of such defects were also presented. Authors proposed a new method based on simplified laser scatterometry to detect these defects. Physical model of the laser beam scattering by edges of such defects and simulation results were given. An experimental set-up for practical testing of this method was designed and constructed. This system enabled measurements of squat defects occurring in the section of the rail extracted from the track. The analysis of obtained results was performed. Authors also indicated directions of further research and development.

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