Abstract
ABSTRACT The traction performance of the footwear deteriorates due to outsole wear which further increases the risk of slip and fall related accidents. To date, several studies have tested footwear tractions across several slippery conditions but only a few studies have attempted to assess their performance considering worn shoes. In this work, nine outsoles, with systematically modified tread geometries, were investigated, to study the effects of tread patterns in new and worn conditions on traction, across common slippery conditions. The outsoles were progressively worn in three wear cycles. Outsoles with increased worn regions generated lower friction and higher fluid pressures, indicating increased slipping risks. Also, diversion of fluid flow due to large worn regions produced high fluid accumulations at other locations over the outsoles. The methods and results are anticipated to help footwear manufacturers with the strategic design of tread patterns that can provide improved friction even when completely worn.
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