METHOD TO MONITOR TEMPERATURE MODE OF OPERATION OF CONTINUOUS WELDED RAILROAD TRACK Russian patent published in 2017 - IPC E01B35/00 B61K9/08 

FIELD: transportation.

SUBSTANCE: invention relates to the field of railroad bed condition monitoring, in particular, to nondestructive testing of stressed condition of continuous welded railroad track rail bar sections. Proposed method to monitor temperature mode of operation of a continuous welded railroad track includes definition of optimal temperature of rail bars as they are fixed in the track for repair works, detection of a section of stressed condition in a rail bar by definition of the current value of bar temperature and intensity of generated Barkhausen noise, in relative units in cross sections with interval of 50-500 m. Besides, intensity of generated Barkhausen noise is tested twice: first at current temperature of a rail bar, which is lower than optimal temperature of bar fixation, second at current temperature of a rail bar, which is higher than optimal temperature of bar fixation. Besides, difference of current values of rail bar temperatures relative to optimal temperature of bar fixation in both cases shall be identical and shall amount to at least 10°C. They define difference of intensity values of generated Barkhausen noise, produced in first and second measurements. By produced values of Barkhausen noise intensity values, they evaluate temperature mode of operation of a continuous welded railroad track.

EFFECT: invention simplifying monitoring of temperature mode of operation of a rail bar in a continuous welded railroad track, areas with danger of track distortion are identified more accurately, due to higher temperature mechanical stresses in a rail bar.

4 cl, 2 dwg