Detail publikace

The effect of surface grooves on film breakdowns in point contacts

ŠPERKA, P. KŘUPKA, I. HARTL, M.

Anglický název

The effect of surface grooves on film breakdowns in point contacts

Typ

Článek WoS

Jazyk

en

Originální abstrakt

Surface roughness plays an important role in transition from full to mixed elastohydrodynamic regime. One kind of features appearing on a real rough surface are grooves longer than contact diameter. It has already been reported that these grooves cause a local film reduction or a complete collapse. In this study, a ball-on-disc optical tribometer was used to quantitatively study the effect of grooves on film thickness in a point contact. It was observed that the main dependence on speed, the so-called lift-off curve, generally follows the logarithm function. The effects of build-up material, load, slide/roll ratio and groove geometry are presented. These results were fitted to the analytical description, which enables the estimation of groove effects on point contact lubrication.

Klíčová slova anglicky

Elastohydrodynamic lubrication; Film thickness; Surface roughness; Surface texture

Vydáno

2016-10-01

Nakladatel

Elsevier

Místo

England

ISSN

0301-679X

Časopis

Tribology International

Ročník

102

Číslo

1

Strany od–do

249–256

Počet stran

8

BIBTEX


@article{BUT114922,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="The effect of surface grooves on film breakdowns in point contacts",
  journal="Tribology International",
  year="2016",
  volume="102",
  number="1",
  pages="249--256",
  doi="10.1016/j.triboint.2016.05.031",
  issn="0301-679X",
  url="http://www.sciencedirect.com/science/article/pii/S0301679X16301220"
}