0
TECHNICAL BRIEFS

Influence of Contact Pressure on Central and Minimum Film Thickness Within Ultrathin Film Lubricated Contacts

[+] Author and Article Information
I. Křupka

Faculty of Mechanical Engineering,  Brno University of Technology, Technicka 2896/2, Brno 61669, The Czech Republickrupka@fme.vutbr.cz

M. Hartl, M. Liška

Faculty of Mechanical Engineering,  Brno University of Technology, Technicka 2896/2, Brno 61669, The Czech Republic

J. Tribol 127(4), 890-892 (Jul 01, 2005) (3 pages) doi:10.1115/1.2032991 History: Received August 02, 2004; Revised July 01, 2005

Recent numerical results have indicated that the relationship between the film thickness and the speed may not always follow the simple power law, especially under severe conditions. This paper is aimed at obtaining experimental results at high contact stresses and low speeds to study the thin film behavior. Ultrathin lubricant films were observed at maximum Hertz pressures of 0.52, 1.01, and 1.54 GPa by using an optical test rig. Central and minimum film thickness values were obtained with thin film colorimetric interferometry from chromatic interferograms. The nonlinear behavior of both central and minimum film thicknesses in log-log coordinates was observed as rolling speed and thereby film thickness decreased. This tendency became more obvious at higher contact pressures.

FIGURES IN THIS ARTICLE
<>
Copyright © 2005 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Central and minimum film thickness values obtained at maximum Hertz pressure of 0.52 GPa

Grahic Jump Location
Figure 2

Central and minimum film thickness values obtained at maximum Hertz pressure of 1.01 GPa

Grahic Jump Location
Figure 3

Central and minimum film thickness values obtained at maximum Hertz pressure of 1.54 GPa

Grahic Jump Location
Figure 4

Minimum film thickness values obtained at maximum Hertz pressures of 0.52, 1.01, and 1.54 GPa

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In