A system (10) for nondestructive evaluation of railroad rails (12, 14), includes a carriage (32) including a plurality of wheels (36, 38, 40) movably supporting the carriage (32) on the rails (12, 14), a source of vibration (46) mounted on the carriage (32) and connected to transmit vibrations (46) of a preselected frequency to test regions (48, 50) on the rails (12, 14) through the wheels (36, 38, 40) to cause an increase in temperature of the rails (12, 14) at locations of flaws (52) in the test regions (48, 50), an infrared detector (54) for recording thermal images (300) of the test regions (48, 50) to detect the increase in temperature of the location of the flaws (52), a controller (56) connected to actuate the infrared detector (54) to record the thermal images (300) of the vibrations (46) impacting the test regions (48, 50), and store the thermal images (300) recorded by the infrared detector (54).


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    Title :

    NONDESTRUCTIVE EVALUATION OF RAILROAD RAILS


    Additional title:

    ZERSTÖRUNGSFREIE PRÜFUNG VON EISENBAHNSCHIENEN
    L'ÉVALUATION NON DESTRUCTIVE DE RAILS DE CHEMIN DE FER


    Contributors:

    Publication date :

    2022-04-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES



    Nondestructive evaluation of railroad rails, wheels, and axles

    THOMPSON JEFFREY G / HULL JOHN R / SAFAI MORTEZA et al. | European Patent Office | 2017

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    Nondestructive testing of railroad wheels and rails by ultrasonics

    Clotfelter, W. M. / Risch, E. R. | NTRS | 1974


    Fissures in railroad rails

    Moore, H.F. | Engineering Index Backfile | 1938


    Fissures in railroad rails

    Moore, H.F. | Engineering Index Backfile | 1937


    Defects in railroad rails

    Gennet, Jr., C.W. | Engineering Index Backfile | 1934