Detail publikačního výsledku

The effect of surface grooves on film breakdowns in point contacts

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Originální název

The effect of surface grooves on film breakdowns in point contacts

Anglický název

The effect of surface grooves on film breakdowns in point contacts

Druh

Článek WoS

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.

Anglický 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

Elastohydrodynamic lubrication; Film thickness; Surface roughness; Surface texture

Klíčová slova v angličtině

Elastohydrodynamic lubrication; Film thickness; Surface roughness; Surface texture

Autoři

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Rok RIV

2017

Vydáno

01.10.2016

Nakladatel

Elsevier

Místo

England

ISSN

0301-679X

Periodikum

Tribology International

Svazek

102

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

249

Strany do

256

Strany počet

8

URL

http://www.sciencedirect.com/science/article/pii/S0301679X16301220

Plný text v Digitální knihovně

http://hdl.handle.net/11012/180516

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"
}

Dokumenty

paper_grooves1_2016
effect-surface_vut