Publication detail

Effect of surface texturing on mixed lubricated non-conformal contacts

KŘUPKA, I. HARTL, M. VRBKA, M.

Original Title

Effect of surface texturing on mixed lubricated non-conformal contacts

Type

journal article - other

Language

English

Original Abstract

The behaviour of surface texturing based on shallow micro-dents was observed within mixed lubricated non-conformal contacts and compared with results obtained under thin film elastohydrodynamic conditions. Thin film colorimetric interferometry was used to observe the changes in lubrication film thickness. It was found that lubricant emitted by micro-dents could effectively lift off the real roughness features that provided an increase in average but also the local minimum film thicknesses. On the contrary to smooth contact conditions no film thickness reduction is obvious either downstream or upstream the micro-dent. The possible beneficial effect of surface texturing on mixed lubricated contact was checked through the qualitative wear test. It confirmed that an array of shallow micro-dents reduced asperity interactions of rubbing surfaces. Moreover, the effect of micro-dents on rolling contact fatigue was also considered in this study. It has been shown that individual dents would have to be much deeper compared to those used in surface texturing experiments to cause reduction in contact fatigue life. It can be suggested from the obtained results that property designed surface texturing could help to increase the separation of rubbing surfaces under mixed lubrication conditions.

Keywords

mixed lubrication; film thickness; surface texturing

Authors

KŘUPKA, I.; HARTL, M.; VRBKA, M.

RIV year

2008

Released

13. 11. 2008

Publisher

Elsevier

Location

EU

ISBN

0301-679X

Periodical

Tribology International

Year of study

41

Number

11

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1063

Pages to

1073

Pages count

11

BibTex

@article{BUT46857,
  author="Ivan {Křupka} and Martin {Hartl} and Martin {Vrbka}",
  title="Effect of surface texturing on mixed lubricated non-conformal contacts",
  journal="Tribology International",
  year="2008",
  volume="41",
  number="11",
  pages="1063--1073",
  issn="0301-679X"
}