Publication detail
The Effect of Boundary Films on Dented Surfaces Operated under Thin EHD Lubrication
KŘUPKA, I. HARTL, M. POLIŠČUK, R.
Czech title
Vliv mezných filmů na mazané kontakty třecích povrchů s defekty
English title
The Effect of Boundary Films on Dented Surfaces Operated under Thin EHD Lubrication
Type
conference paper
Language
en
Original abstract
The behaviour of thin viscous boundary films in the rough surface rolling-sliding point contact operated under thin film lubrication conditions have been observed by thin film colorimetric interferometry. Changes in film thickness distribution within the lubricated contact between micro-textured steel ball and glass disc were studies with both mineral base oil and formulated oils. It has been shown in the previous studies that the presence of the micro-dent within concentrated contact results in film thickness reduction located downstream of the leading edge of the micro-dent for the operational conditions when the disc is moving faster than the micro-textured ball. In this case such a reduction could cause the local film breakdown of very thin films. Results obtained in this study proved that thin viscous boundary films formed on rubbing surfaces can help to separate rubbing surfaces even under very thin film conditions.
Czech abstract
Příspěvek shrnuje výsledky experimentálního studia vlivu defektů třecích povrchů na tenký mazací film.
English abstract
The behaviour of thin viscous boundary films in the rough surface rolling-sliding point contact operated under thin film lubrication conditions have been observed by thin film colorimetric interferometry. Changes in film thickness distribution within the lubricated contact between micro-textured steel ball and glass disc were studies with both mineral base oil and formulated oils. It has been shown in the previous studies that the presence of the micro-dent within concentrated contact results in film thickness reduction located downstream of the leading edge of the micro-dent for the operational conditions when the disc is moving faster than the micro-textured ball. In this case such a reduction could cause the local film breakdown of very thin films. Results obtained in this study proved that thin viscous boundary films formed on rubbing surfaces can help to separate rubbing surfaces even under very thin film conditions.
Keywords in Czech
tenký mazací film; povrchové defekty
Keywords in English
dent; Thin film lubrication; Film Thickness
RIV year
2007
Released
12.06.2007
Publisher
Slovenian society for tribology
Location
Ljubljana
ISBN
978-961-90254-8-2
Book
Ecotrib 2007
Edition number
1
Pages from–to
745–754
Pages count
10
BIBTEX
@inproceedings{BUT27852,
author="Ivan {Křupka} and Martin {Hartl} and Radek {Poliščuk},
title="The Effect of Boundary Films on Dented Surfaces Operated under Thin EHD Lubrication",
booktitle="Ecotrib 2007",
year="2007",
month="June",
pages="745--754",
publisher="Slovenian society for tribology",
address="Ljubljana",
isbn="978-961-90254-8-2"
}