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Analysis of Shoe Friction During Sliding Against Floor Material: Role of Fluid Contaminant



Details

  • Personal Author:
  • Description:
    Understanding the tribological interactions between shoe and floor materials is important in order to enhance shoe and floor design and to prevent slip and fall accidents during walking. In the present investigation, experiments were conducted using a custom developed pin-on-disk type tribometer to understand the influence of boundary and hydrodynamic properties on the shoe-floor materials' coefficient of friction. Specifically, polyurethane shoe material was slid against vinyl floor material in the presence of varying lubricants (i.e., water, detergent, three diluted glycerol concentrations, and canola oil). The experiments were conducted for a range of biologically relevant sliding velocities from 0.05 m sec-1 to 1.0 m sec-1 at a contact pressure of 266.1 kPa under ambient conditions. The fluid chemical composition appeared to affect the boundary friction coefficient with longer-chain molecules resulting in a decreased coefficient of friction. As fluid viscosity increased, the rate of coefficient of friction decay increased with respect to increasing fluid entrainment velocity, suggesting less material contact and increased film thickness. The nondimensional film thickness under all conditions was calculated and the nondimensional film thickness consistently increased with increased viscosity and speed. Additionally, the effect of functionally achievable variations in polyurethane shoe roughness on the coefficient of friction was examined and found to have no statistically significant effect on boundary or hydrodynamic contributions to the coefficient of friction. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0742-4787
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Volume:
    134
  • Issue:
    4
  • NIOSHTIC Number:
    nn:20055605
  • Citation:
    J Tribol 2012 Sep; 134(4):041104
  • Contact Point Address:
    Kurt E. Beschorner, Department of Industrial Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI 53201
  • Email:
    beschorn@uwm.edu
  • Federal Fiscal Year:
    2012
  • NORA Priority Area:
  • Performing Organization:
    University of Pittsburgh at Pittsburgh
  • Peer Reviewed:
    True
  • Start Date:
    20100801
  • Source Full Name:
    Journal of Tribology
  • End Date:
    20140731
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:55961c0d4f6c68ae9198cf00013967eff1eb3b5b78c4134d58802eb2051ee3f2c753c4eedd7a887c83f7e9fd833dacf4554fd72d72c43add597e043375e5705a
  • Download URL:
  • File Type:
    Filetype[PDF - 818.45 KB ]
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