Test Foot Contact Time Effects in Pedestrian Slip-Resistance Metrology

    Volume 33, Issue 1 (January 2005)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 6 December 2004

    Page Count: 5


    Smith, RH
    Engineer, National Forensic Engineers, Inc., Kenmore, WA

    (Received 9 December 2004; accepted 23 July 2004)

    Abstract

    Pedestrian slip-resistance metrology involves the use of tribometers employing test feet on test surfaces. This paper investigates the hypothesis that measured static slip-resistance on smooth walkways increases with test foot contact time, as has been found for coefficient-of-friction testing between smooth metals. Earlier slip-resistance testing by others, as well as results from testing in the present investigation, is consistent with this hypothesis. Some tribometers cannot control contact time. If the contact-time hypothesis is correct, reproducible results cannot be obtained from such devices. The mechanism accounting for increased metallic friction with contact time, as well as its possible applicability to slip-resistance tribometry, is discussed.


    Paper ID: JTE11807

    DOI: 10.1520/JTE11807

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    Author
    Title Test Foot Contact Time Effects in Pedestrian Slip-Resistance Metrology
    Symposium , 0000-00-00
    Committee F06