Publication detail

Thin lubricating films behaviour at very high contact pressure

KŘUPKA, I. HARTL, M.

Czech title

Chování velmi tenkých mazacích filmů za velkých kontakních tlaků

English title

Thin lubricating films behaviour at very high contact pressure

Type

journal article - other

Language

en

Original abstract

Thin film colorimetric interferometry has been used to examine the behaviour of thin elastohydrodynamic (EHD) lubricant films under very high contact pressures of the order of 0.5 to 3 GPa. It has been shown that at moderate pressures, the variation of film thickness with speed follows the Hamrock and Dowson prediction down to one nanometer. As the load is increased, however, thin films behave differently from the prediction of the conventional EHD theory. For a certain lubricant and operational conditions, there is a critical rolling speed below which a reduction of film thickness is observed. This behaviour is very similar to that previously predicted computationally by Zhu.

Czech abstract

Kolorimetrická interferometrie byla použita k měření cetrální tloušťky mazacího filmu za velkých kontakních tlaků. Získané výsledky potvrzují predikci chování numerického řešení, kterou publikoval Zhu Dong.

English abstract

Thin film colorimetric interferometry has been used to examine the behaviour of thin elastohydrodynamic (EHD) lubricant films under very high contact pressures of the order of 0.5 to 3 GPa. It has been shown that at moderate pressures, the variation of film thickness with speed follows the Hamrock and Dowson prediction down to one nanometer. As the load is increased, however, thin films behave differently from the prediction of the conventional EHD theory. For a certain lubricant and operational conditions, there is a critical rolling speed below which a reduction of film thickness is observed. This behaviour is very similar to that previously predicted computationally by Zhu.

Keywords in English

lubrication; film thickness

RIV year

2006

Released

30.11.2006

Publisher

Elsevier

Location

Holandsko

ISSN

0301-679X

Journal

Tribology International

Volume

39

Number

12

Pages from–to

1726–1731

Pages count

6

BIBTEX


@article{BUT43718,
  author="Ivan {Křupka} and Martin {Hartl},
  title="Thin lubricating films behaviour at very high contact pressure",
  journal="Tribology International",
  year="2006",
  volume="39",
  number="12",
  month="November",
  pages="1726--1731",
  publisher="Elsevier",
  address="Holandsko",
  issn="0301-679X"
}