Publication result detail

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

KŘUPKA, I., HARTL, M., LIŠKA, M.

Original Title

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

English Title

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

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

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. Ultra-thin 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 non-linear 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.

English abstract

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. Ultra-thin 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 non-linear 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.

Key words in English

lubrication, high pressure, film thickness

Authors

KŘUPKA, I., HARTL, M., LIŠKA, M.

Released

01.07.2005

ISBN

0742-4787

Periodical

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME

Volume

127

Number

4

State

United States of America

Pages from

890

Pages count

3

BibTex

@article{BUT42820,
  author="Ivan {Křupka} and Martin {Hartl} and Miroslav {Liška}",
  title="Influence of Contact Pressure on Central and Minimum Film Thickness Within Ultrathin Film Lubricated Contacts",
  journal="JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME",
  year="2005",
  volume="127",
  number="4",
  pages="3",
  issn="0742-4787"
}