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The effect of footwear sole abrasion on the coefficient of friction on melting and hard ice
Luleå tekniska universitet.
Luleå tekniska universitet.
Department of Physics, Finnish Institute of Occupational Health.
Department of Physics, Finnish Institute of Occupational Health.
2003 (English)In: International Journal of Industrial Ergonomics, ISSN 0169-8141, E-ISSN 1872-8219, Vol. 31, no 5, p. 323-330Article in journal (Refereed) Published
Abstract [en]

Footwear sole wear by natural use or artificial abrasion either increases or decreases slip resistance on floors with and without lubricant. The objectives of this paper were to study the effect of footwear sole abrasive wear on slip resistance on ice with respect to temperature, and to compare the slip resistance of abraded soles on melting and hard ice with that on lubricated steel plate. The kinetic coefficient of friction (COF) of nine pairs of footwear were measured with the stationary step simulator developed at the Finnish Institute of Occupational Health, before and after the new footwear soles were artificially abraded. Two-way factorial ANOVA showed that the abrasion of nine pairs of footwear had no significant effect on COF on melting ice (Mean COF with abrasion=0.056, std=0.0158, COF without abrasion=0.055, std=0.0205, P=0.805). On hard ice, however, the COF of abraded soles measured (mean COF=0.244) was significantly higher than without abrasion (mean COF=0.180,p<0.001), and than abraded soles on lubricated steel (mean=0.137,p<0.001). There is statistical significance between the three types of surfaces (P<0.001). On hard ice, regardless of abrasion, curling footwear with crepe rubber soling showed significantly higher COF (mean=0.343 after abrasion, 0.261 before abrasion) than other types (P<0.001). The results indicate that artificially abraded footwear is more slip resistant than new one for use on hard ice. The abrasion requirement could be specified if developing a new standard to measure COF on ice in the future. Of the footwear measured, the curling footwear with crepe rubber soling performed best in terms of slip resistance property. Therefore, Crepe rubber soling is highly recommended for use on hard ice. Melting ice is much more slippery, in which sole abrasion does not improve slip resistance. Thus, additional measures should be taken to reduce slip and fall risk. Relevance to industrySlipping and falling accidents are common on surfaces covered with snow, ice, melting snow, melting ice or the mixed in winter for outdoor workers and pedestrians. Understanding of the friction at the interface can help footwear industry design slip resistant products, to help outdoor workers choose appropriate protective equipment, and to provide safe work practice for industries involving outdoor work.

Place, publisher, year, edition, pages
2003. Vol. 31, no 5, p. 323-330
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Industrial Work Environment
Identifiers
URN: urn:nbn:se:ltu:diva-8235DOI: 10.1016/S0169-8141(02)00234-2ISI: 000181821200005Scopus ID: 2-s2.0-0037400523Local ID: 6b5d4e80-c1b5-11db-9ea3-000ea68e967bOAI: oai:DiVA.org:ltu-8235DiVA, id: diva2:981126
Note

Validerad; 2003; 20070221 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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