Pedestrian slips, trips and falls account for around one in three major workplace accidents. Many of these result from poor traction caused by liquid and particulate contamination. The mechanisms behind lubrication for liquid contaminants within the shoe-floor 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 particles of different size. Experiments were conducted using a Stanley Pendulum Tester. Results suggest the adhesive friction is significantly affected by particulate contaminants whilst the hysteretic component is not. Three lubrication mechanisms, sliding, shearing and rolling have been observed depending on floor roughness, particle size and shape factor. A simple map showing the regimes where these can occur is presented.
- Tribology Division
Pedestrian Slips Caused by Particle Contamination
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Dwyer-Joyce, RS, Mills, R, & Loo-Morrey, M. "Pedestrian Slips Caused by Particle Contamination." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology. San Antonio, Texas, USA. October 23–25, 2006. pp. 1211-1212. ASME. https://doi.org/10.1115/IJTC2006-12359
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