Detail publikace

Reducing the friction of lubricated nonconformal point contacts by transverse shallow micro-grooves

ALI, F. KŘUPKA, I. HARTL, M.

Anglický název

Reducing the friction of lubricated nonconformal point contacts by transverse shallow micro-grooves

Typ

Článek WoS

Jazyk

en

Originální abstrakt

This study focuses on the effects of transverse shallow micro-grooves on the film thickness and friction of nonconformal contacts under relative motion. Experiments were conducted using a ball-on-disc tribometer equipped with high speed camera and torque sensor. The lubricated contact between the steel ball and glass disc represents a nonconformal point contact with elastohydrodynamic lubrication. The measurements of the film thickness were carried out using the optical interferometry technique while the friction was measured by a torque sensor on the ball shaft. The results reveal that the rubbing surfaces with transverse shallow micro-grooves with a length less than the diameter of the Hertzian contact have an improved tribological performance in comparison with smooth surfaces in the elastohydrodynamic lubrication regime. Indeed, a significant enhancement of film thickness has been observed using such design of microgrooves.

Klíčová slova anglicky

Elastohydrodynamic lubrication; film thickness; friction; surface texturing; micro-grooves

Vydáno

2015-04-09

Nakladatel

Sage

Místo

UK

ISSN

1350-6501

Časopis

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY

Ročník

229

Číslo

4

Strany od–do

420–428

Počet stran

9

BIBTEX


@article{BUT111249,
  author="Fadi {Ali} and Ivan {Křupka} and Martin {Hartl}",
  title="Reducing the friction of lubricated nonconformal point contacts by transverse shallow micro-grooves",
  journal="PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY",
  year="2015",
  volume="229",
  number="4",
  pages="420--428",
  doi="10.1177/1350650114543317",
  issn="1350-6501"
}