The growth of fatigue cracks in rail is a cause of ongoing concern to the railway industry, and much research and development work has been conducted to develop both trackside and train mounted analysis systems which are able to monitor the structural health of railway networks. To this end a new infrared-based method for surface crack quantification at conventional train speeds is being developed which delivers crack detection capability over the full depth of the rail section, with a crack resolution capability comparable to competing detection techniques. Experimental results are presented for a laboratory three-point bend notched specimen, the geometry of which is representative of surface-connected cracks with lengths below 2 mm in sections of rail. Two analyses are considered: a simulated trackside system, where the observation point is fixed and the repeated loading event experienced by a section of rail during the passage of multi-carriage rolling stock is considered; and a simulated train-based system, where the observation point moves along the rail and the loading event produced by the passage of a single train wheel is considered. Data from the trackside simulation system clearly identifies the precise location and severity of an artificially introduced notch on the upper surface of the specimen. Initial data from the train-based simulation system identifies the notch location precisely, but is unable to quantify the magnitude of the flaw using the current processing method. The paper then describes modifications to the testing and data processing methods required to improve the performance of both systems, and outlines the future on-site testing work planned to validate the methods presented.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Rail crack detection: An infrared approach to in-service track monitoring


    Weitere Titelangaben:

    Rissentdeckung in Eisenbahnschienen: Eine Infrarotmethode zur Überwachung im Betrieb


    Beteiligte:


    Erscheinungsdatum :

    2006


    Format / Umfang :

    8 Seiten, 12 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    RAIL TRACK DETECTION DEVICE

    FUTAGAMI TAKUYA / TAKAHASHI YUSUKE / KOBAYASHI HIROYUKI et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    RAIL TRACK CONDITION MONITORING METHOD

    POLEVOJ YURIJ IOSIFOVICH / GORELIK ALEKSANDR VLADIMIROVICH / SAVCHENKO PAVEL VLADIMIROVICH | Europäisches Patentamt | 2020

    Freier Zugriff

    Image-based monitoring and detection of track/rail faults

    CHUNG KEVIN KWONG-TAI / HUANG YULIN / ZHU DEXI et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    Sensor for monitoring steel rail crack state and steel rail crack monitoring method

    LIU MING / WANG ZHIMING / ZHANG WENRONG et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    IMAGE-BASED MONITORING AND DETECTION OF TRACK/RAIL FAULTS

    CHUNG KEVIN KWONG-TAI / HUANG YULIN / ZHU DEXI et al. | Europäisches Patentamt | 2020

    Freier Zugriff