Detail publikace

Effect of surface texturing on mixed lubricated non-conformal contacts

KŘUPKA, I. HARTL, M. VRBKA, M.

Originální název

Effect of surface texturing on mixed lubricated non-conformal contacts

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

mixed lubrication; film thickness; surface texturing

Autoři

KŘUPKA, I.; HARTL, M.; VRBKA, M.

Rok RIV

2008

Vydáno

13. 11. 2008

Nakladatel

Elsevier

Místo

EU

ISSN

0301-679X

Periodikum

Tribology International

Ročník

41

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1063

Strany do

1073

Strany počet

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"
}