Torsional Shear Measurements of the Frictional Properties of Westerly Granite

Abstract

Laboratory tests were conducted to measure the frictional properties of Westerly granite with ground surfaces. Torsional shear tests were conducted under confining pressure and axial stress. A strong dependency of the coefficient of friction on the state of stress was established, in addition to the usual dependency on normal stress. A three decade increase in the rate of shearing deformation showed no increase in coefficient of friction.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1974
Accession Number
AD0787043

Entities

People

  • Roland J. Christensen
  • Stephen R. Swanson
  • Wayne S. Brown

Organizations

  • University of Utah

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Axial Loads
  • Hydrostatic Pressure
  • Load Cells
  • Materials
  • Measurement
  • Mechanical Engineering
  • Physical Properties
  • Plastic Explosives
  • Pressure Vessels
  • Roughness
  • Shear Stresses
  • Shear Tests
  • Strain Rate
  • Stresses
  • Surface Properties
  • Surface Roughness
  • Tectosilicates

Readers

  • Mechanical Engineering/Mechanics of Materials.