METHOD FOR ULTRASONIC CHECK OF RAIL BASE Russian patent published in 1997 - IPC

FIELD: acoustic methods of nondestructive tests in railway engineering. SUBSTANCE: three combined ultrasonic transducers are installed on inner plane (relative to track) of base tongue with beam axes being directed according to scheme: from one transducer to internal tongue edge, from two transducers operating in tandem, to external tongue edge. Ultrasound entrance points of three ultrasonic transducers are located on internal tongue of rail base at specified distance from rail center line. Cross ultrasonic wave beams are emitted to rail, ultrasonic waves reflected from flaw are received at same point, parameters of received waves are measured and rail quality is determined by measurement results. EFFECT: facilitated procedure. 4 dwg