METHOD AND APPARATUS FOR THE CONTACTLESS DYNAMIC INSPECTION OF RAILWAY RAILS

摘要

An apparatus for the contactless dynamic inspection of railway rails, characterised by comprising: - a railway trolley (6) slidable along the rail (4) to be inspected, - a measurement unit (12) for each rail (4) to be inspected, mounted on said trolley (6), - transverse stabilization means for said measurement unit (12) with respect to the rail (4) to be inspected, - at least one pulsed laser source (10) powering said measurement unit (12), - guide means (20) for the laser pulses generated by said laser source (10), - optical means (24) associated with said guide means (20) and able to focus said laser pulses onto that part of the rail (4) to be inspected, - at least one sensor (36, 38, 40, 41) for the ultrasonic signals generated by the impact of the laser pulses on said rail (4), - at least one computer (34) for acquiring and processing data, - means (32) for locating defects detected in the inspected rail (4).