title: The effect of surface waviness on friction between Neolite and quarry tiles.
abstract: Friction is widely used as an indicator of surface slipperiness in preventing accidents in slips and falls. Surface texture affects friction, but it is not clear which surface characteristics are better correlated with friction. Highly correlated surface characteristics could be used as potential interventions to prevent slip and fall accidents. The dynamic friction between quarry tiles and a commonly used sole testing material, Neolite, using three different mixtures of glycerol and water as contaminants at the interface was correlated with the surface parameters of the tile surfaces. The surface texture was quantified with various surface roughness and surface waviness parameters using three different cut-off lengths to filter the measured profiles for obtaining the profiles of either surface roughness or surface waviness. The correlation coefficients between the surface parameters and the measured friction were affected by the glycerol contents and cut-off lengths. Surface waviness parameters could potentially be better indicators of friction than commonly used surface roughness parameters, especially when they were measured with commonly used cut-off lengths or when the viscosity of the liquid contaminant was high.
authors.affiliation: Liberty Mutual Research Institute for Safety, Hopkinton, MA 01748, USA. Wen.Chang@LibertyMutual.com
authors.forename: Wen-Ruey
authors.initials: WR
authors.lastname: Chang
authors.forename: Raoul
authors.initials: R
authors.lastname: Grönqvist
authors.forename: Mikko
authors.initials: M
authors.lastname: Hirvonen
authors.forename: Simon
authors.initials: S
authors.lastname: Matz
mesh_terms: D000058:Accidental Falls / Q000517:prevention & control*; D000704:Analysis of Variance; D006804:Ergonomics / Q000379:methods; D005430:Floors and Floorcoverings; D005583:Fourier Analysis; D017276:Friction; D006801:Humans; D008422:Materials Testing / Q000379:methods; D008962:Models, Theoretical; D012408:Rubber; D012775:Shoes; D013499:Surface Properties
chemical_list: D012408:Rubber