A method of evaluating railway ties for deterioration is mounted on a moving vehicle along the rails where the presence of the tie is detected and an impact energy source is used to create at least one wave in a surface of the tie which travels longitudinally along the tie. At positions spaced longitudinally from the source, the time of arrival of the wave is detected typically by a series of sensors responsive to air pressure changes to determine a speed of propagation of the wave in the tie and, in the event that the speed in said tie is below a predetermined speed, an output indication is provided regarding the deterioration of the tie, which can include a real time marking of the tie detected.


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    Title :

    EVALUATING RAILWAY TIES


    Additional title:

    EVALUATION DE JONCTIONS DE CHEMINS DE FER


    Contributors:

    Publication date :

    2017-07-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / E01B PERMANENT WAY , Gleisoberbau



    Railway ties

    Bullara, S. | Engineering Index Backfile | 1911


    Railway ties

    Bullara, S. | Engineering Index Backfile | 1911


    Railway ties

    Engineering Index Backfile | 1911


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    Busfield, J.L. | Engineering Index Backfile | 1914


    Metal railway ties

    Duplaix, M. | Engineering Index Backfile | 1925