Methods and devices for detecting a defect in a rail of a railway track, include at least two sensors selected from among magneto-acoustic and/or piezoelectric and/or magnetostrictive transducers; each sensor being associated with a timestamping circuit of a GNSS satellite positioning system; a measuring circuit for measuring, by way of the sensors, the acousto-elastic waves propagating in the rail, the wave or signal measurements being timestamped. Some developments describe notably active and passive modes; the use of train crossings; the emission of waves; the determination of the existence and then of the position and finally the characterization of the defect, where applicable; preferred placements for installing the sensors; the use of inter-correlation, passive inverse filter or correlation of coda of correlation methods; the use of mobile robots and/or drones; the use of artificial noise sources.
SYSTEME ET PROCEDE POUR LA DETECTION D'UN DEFAUT DANS UN RAIL D'UNE VOIE FERREE
SYSTEM AND METHOD FOR DETECTING A DEFECT IN A RAILWAY TRACK RAIL
SYSTEM UND VERFAHREN ZUM ERKENNEN EINES DEFEKTS IN EINEM BAHNGLEIS
2022-11-02
Patent
Electronic Resource
French
SYSTEME ET PROCEDE POUR LA DETECTION D’UN DEFAUT DANS UN RAIL D’UNE VOIE FERREE
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