Friction Coefficient of Rough Indoor Flooring Materials
2008; Volume: 19; Issue: 2 Linguagem: Inglês
10.4197/eng.19-2.4
ISSN1319-1047
AutoresF. Ezzat, Amal. T. Hasouna, W. Y. Ali,
Tópico(s)Sports Performance and Training
ResumoThe present study investigates the effect of the surface roughness of polymeric indoors floorings on the static friction of bare foot as well as foot wearing cotton and polymeric socks under dry, water, water + 5.0 vol.% soap, oil and water + 5.0 vol.% oil lubricated sliding conditions.Polymeric floor sheets of different roughness ranging from 0.05 and 11.0 µm were tested.The tested material is commonly used in entrance areas or corridors and in the sport halls.Cotton and polymeric socks as well as bare foot were frictionally tested.The results were compared to the friction caused by shoes as simulated by rubber test specimens of vee shape treads were prepared in the form of square sheets of 100 × 100 mm, 10.0 mm thickness.Experiments were carried out using a test rig designed and manufactured to measure the friction coefficient between the foot and the tested polymeric flooring materials.materials.The maximum friction values were noticed at 4.0 µm R a .Bare foot displayed drastic reduction in friction coefficient, while cotton socks showed the highest values.When water was diluted by 5.0 wt.% oil, rubber smooth flooring surface displayed values of friction coefficient close to that observed for hydrodynamic lubrication where the two sliding surfaces are separated by the fluid film.As the roughness increased the fluid film was broken and friction increased.Cotton socks showed the highest friction compared to bare foot and polymeric socks.
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