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Title: Revisiting mechanics of ice–skate friction : from experiments at a skating rink to a unified hypothesis
Authors: Lever, J. H.
Lines, Austin P.
Taylor, Susan
Hoch, Garrett R.
Asenath-Smith, Emily
Sodhi, D. S.
Keywords: Abrasion
Brittle ice failure
Infrared thermography
Quasi-liquid layers
Sliding friction
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous Paper (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL MP-21-32
Is Version Of: Lever, James H., Austin P. Lines, Susan Taylor, Garrett R. Hoch, Emily Asenath-Smith, and Devinder S. Sodhi. "Revisiting mechanics of ice–skate friction: from experiments at a skating rink to a unified hypothesis." Journal of Glaciology (2021): 1-20.
Abstract: The mechanics underlying ice–skate friction remain uncertain despite over a century of study. In the 1930s, the theory of self-lubrication from frictional heat supplanted an earlier hypothesis that pressure melting governed skate friction. More recently, researchers have suggested that a layer of abraded wear particles or the presence of quasi-liquid molecular layers on the surface of ice could account for its slipperiness. Here, we assess the dominant hypotheses proposed to govern ice– skate friction and describe experiments conducted in an indoor skating rink aimed to provide observations to test these hypotheses. Our results indicate that the brittle failure of ice under rapid compression plays a strong role. Our observations did not confirm the presence of full contact water films and are more consistent with the presence of lubricating ice-rich slurries at discontinuous high-pressure zones (HPZs). The presence of ice-rich slurries supporting skates through HPZs merges pressure-melting, abrasion and lubricating films as a unified hypothesis for why skates are so slippery across broad ranges of speeds, temperatures and normal loads. We suggest tribometer experiments to overcome the difficulties of investigating these processes during actual skating trials.
Description: Miscellaneous Paper
Gov't Doc #: ERDC/CRREL MP-21-32
Appears in Collections:Miscellaneous Paper

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