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The mechanisms of pedestrian slip on flooring contaminated with solid particles

Mills, R., Dwyer-Joyce, R.S. and Loo-Morrey, M. (2009) The mechanisms of pedestrian slip on flooring contaminated with solid particles. Tribology International, 42 (3). pp. 403-412. ISSN 0301679X

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Statistics by the UK Health and Safety Executive (HSE) suggest that slips, trips and falls account for up to one in three major workplace accidents. The vast majority of these accidents are the result of contaminant (fluid or solid) within the shoe-floor contact. Though the lubrication mechanisms for liquid contaminants within the contact are well understood, the same cannot be said for particulate contaminants. This paper considers the key parameters controlling friction in a shoe-floor contact contaminated with various particles of different diameters and shape factors and floors with different roughness values (Rz). Experiments were conducted using a Stanley Pendulum Tester, which is the floor friction tester recommended by the HSE. Results suggest that the adhesive friction is significantly affected by particulate contaminants, while the hysteretic component is not. Three lubrication mechanisms identified as sliding, shearing and rolling have been observed depending on floor roughness, particle size and shape factor and have been plotted in a simple map to predict behaviour.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam. . This is an author produced version of a paper published in 'Tribology International'. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Contaminants Floor slipperiness Pedestrian slipping Pendulum friction tester Shoe Accidents Building materials Contamination Friction Impurities Lubrication Materials testing apparatus Occupational risks Pedestrian safety Pendulums Tribology Adhesive frictions Health and Safety executives Key parameters Lubrication mechanisms Particle size and shapes Shape factors Solid particles Floors
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 18 Aug 2009 13:50
Last Modified: 08 Feb 2013 16:58
Published Version: http://dx.doi.org/10.1016/j.triboint.2008.07.013
Status: Published
Publisher: Elsevier Science B.V., Amsterdam.
Refereed: Yes
Identification Number: 10.1016/j.triboint.2008.07.013
URI: http://eprints.whiterose.ac.uk/id/eprint/9162

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