FIELD: transportation, physics.
SUBSTANCE: at least three electroacoustic transducers are installed so that their sounding lines are intersecting by pairs. Sounding plane is selected being parallel to rail generatix. Rail head is sounded by all pairs of electroacoustic transducers separately. Then all electroacoustic transducers are moved over mentioned plane, position of each of detected defect boundaries lines is saved, all lines are conjointly analysed and defect position and orientation in sounding plane is calculated.
EFFECT: reliable estimate of sizes, position and orientation of defect in rail head.
3 cl, 8 dwg
