X-ray ct imaging of grease behavior in ball bearing and multi-scale grease flows simulation

Takashi Noda, Kenichi Shibasaki, Q. J. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

The development of bearing life-extension technologies requires in-depth understanding of the grease behavior in a bearing operation. In many cases, several difficulties commonly arise when attempting to observe the grease behavior directly from the bearing exterior without removing seals and shields while conducting conventional experiments. The work reported in this paper utilizes an X-ray computed tomography (CT) imaging system, one of the non-destructive detection tools, to capture the grease distribution in a ball bearing and grease internal flows, especially grease transition from churning to a channeling state. Additionally, numerical simulations of grease flows, Computational Fluid Dynamics for the macroscopic grease flows and Elastohydrodynamics for mesoscopic film thickness variation in the contact area, were respectively performed. An integrated multi-scale grease flow simulation scheme is targeted as the final goal of this work.

Original languageEnglish (US)
Title of host publicationSociety of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2016
PublisherSociety of Tribologists and Lubrication Engineers
Pages361-362
Number of pages2
ISBN (Electronic)9781510825048
StatePublished - Jan 1 2016
Event71st Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2016 - Las Vegas, United States
Duration: May 15 2016May 19 2016

Publication series

NameSociety of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2016

Other

Other71st Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2016
Country/TerritoryUnited States
CityLas Vegas
Period5/15/165/19/16

Keywords

  • Lubricant physical analysis: Non-Newtonian behavior
  • Lubricants: Greases
  • Rolling bearings: Ball bearings

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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