Detail publikačního výsledku

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

ALI, F.; KŘUPKA, I.; HARTL, M.

Originální název

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

Anglický název

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

Druh

Článek WoS

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.

Anglický 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

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

Klíčová slova v angličtině

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

Autoři

ALI, F.; KŘUPKA, I.; HARTL, M.

Rok RIV

2016

Vydáno

09.04.2015

Nakladatel

Sage

Místo

UK

ISSN

1350-6501

Periodikum

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

Svazek

229

Číslo

4

Stát

Spojené království Velké Británie a Severního Irska

Strany od

420

Strany do

428

Strany počet

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"
}