Rolling contact fatigue performance of vibro-mechanical textured surfaces

Aaron Greco*, Ashlie Martini, Yuchuan Liu, Chih Lin, Qian J. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The rolling contact fatigue (RCF) performance of vibro-mechanical textured surfaces in a point elastohydrodynamic lubrication (EHL) condition is investigated. Two dimple designs, small (100 μm × 100 μm) and large (240 μm × 100 μm), are compared with a nontextured sample. Experimental RCF tests show that the textured surfaces exhibit a significantly reduced number of cycles to failure compared with the nontextured sample for the high load, pure rolling conditions evaluated. In order to understand these results, numerical models are used to calculate the lubrication and contact pressure conditions and the subsurface stress distribution. The fatigue failure trends observed experimentally are compared with the simulation results with good agreement. It is determined that RCF performance is related to the presence and size of the generated dimple.

Original languageEnglish (US)
Pages (from-to)610-620
Number of pages11
JournalTribology Transactions
Volume53
Issue number4
DOIs
StatePublished - Jul 2010

Keywords

  • Rolling-Contact Fatigue
  • Surface Modification
  • Vibro-Mechanical Texturing

ASJC Scopus subject areas

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

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