METHOD OF ASSESSING STATE OF RAILWAY TRACK Russian patent published in 2011 - IPC G01N29/14 

FIELD: physics.

SUBSTANCE: acoustic emission signal parameters are received, recorded and assessed during movement of a railway wagon bogie. The acoustic signals are digitised. The spectrum of the acoustic signals is analysed and said signals are processed. Transducers of acoustic emission system SDS1008 are mounted on clean fixed elements of the wagon bogie, which does not have wearing on the whole or on its separate components and is the "reference", on the "right" and "left" side with two on each side. The acoustic emission transducers are connected to preamplifiers lying near the transducers. The preamplifiers are connected to the system unit of the SDS1008 system and a portable computer. The railway wagon bogie is moved at different speeds and modes with different degree of loading the wagon on circular and straight railway sections which are "reference sections", having standard generalised indicators of the state of the track. Spectral parameters of the acoustic emission from the acoustic emission transducers are recorded. The obtained data are considered "reference" for each section of the railway track. The wagon with the "reference bogie" is moved on the railway tracks under analysis. Spectral parameters of the acoustic emission on the analysed sections of the railway track are recorded. The obtained data are analysed and compared with "reference" data and the state of the railway track is determined from the analysis and comparison results.

EFFECT: possibility of fast and reliable assessment of the state of the railway track.

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