SOME PARAMETERS AFFECTING TACTILE FRICTION


DINC O., ETTLES C., CALABRESE S., SCARTON H.

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, vol.113, no.3, pp.512-517, 1991 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 113 Issue: 3
  • Publication Date: 1991
  • Doi Number: 10.1115/1.2920653
  • Journal Name: JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.512-517
  • Istanbul Technical University Affiliated: No

Abstract

The friction of a sliding tactile contact was measured in an apparatus which simulated a keyboard. Results were taken for several materials. The friction coefficient was found to decrease with increasing load and with increasing speed. Experiments at varying humidity and surface roughness helped to define the friction mechanisms. It is concluded that tactile friction is predominantly adhesive, but modified by liquid bridging between the ridges of the skin and the counterface. Increased bridging due to higher humidity causes increased friction from viscous shearing effects, while increased roughness allows fewer bridges to form, decreasing the friction.