Friction characteristics of microtextured surfaces under mixed and hydrodynamic lubrication

Ashwin Ramesh, Wasim Akram, Surya P. Mishra, Andrew H. Cannon, Andreas A. Polycarpou, William P. King

Research output: Contribution to journalArticlepeer-review


We report experimental and numerical investigations of the friction characteristics of microtextured surfaces. The textures are of size 28-257 μm on stainless steel surfaces, fabricated using micro-casting. Friction characteristics of these surfaces were tested under submerged conditions using a pin-on-disk configuration. Numerical simulations solved the Navier-Stokes equations to predict the texture-induced lift. During hydrodynamic lubricated sliding, the textured surfaces exhibit friction as much as 80% lower than the untextured surfaces. We study the effect of operating conditions on the friction performance of the surfaces for different textures. The trends obtained in the experiments match well with the simulations, and indicate design rules for the implementation of this technology.

Original languageEnglish (US)
Pages (from-to)170-176
Number of pages7
JournalTribology International
StatePublished - Jan 2013


  • Hydrodynamic lubrication
  • Microtexturing
  • Mixed lubrication
  • Surface engineering

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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