Article

Tribology Letters

, Volume 7, Issue 1, pp 51-56

Hardness of a surface containing uniformly spaced pyramidal asperities

  • M.S. BobjiAffiliated withDepartment of Mechanical Engineering, Indian Institute of Science
  • , S.K. BiswasAffiliated withDepartment of Mechanical Engineering, Indian Institute of Science

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Abstract

Pyramidal asperities of different apical angle were machined on a flat copper surface. Hardness was estimated from the load–displacement graphs obtained by pressing a spherical rigid indenter onto the asperities. The variation of hardness with apical angle and pitch was recorded with a view to contributing to the development of a general framework for relating measured hardness to the surface roughness.

surface roughness indentation multiple asperities contact