Publication detail
Effect of surface topography on mixed lubrication film formation during start up under rolling/sliding conditions
KŘUPKA, I. SVOBODA, P. HARTL, M.
Czech title
Vliv povrchových nerovností na utváření mazacího filmu při rozběhu třecích povrchů
English title
Effect of surface topography on mixed lubrication film formation during start up under rolling/sliding conditions
Type
journal article - other
Language
en
Original abstract
The start up operation of mixed lubricated contacts represents one of the transient conditions that bring the risk of the surface damage because of asperities interactions. This paper focuses on the effects of both artificially produced and real roughness features on mixed lubrication film formation during start up of non-conformal contacts operated under rolling/sliding conditions. Chromatic interferograms captured during start up enabled the detailed changes in lubrication film caused by surface features to be observed. The observation of the effects of surface dents artificially produced on the ball surface helped to better understand the behaviour of real surface topography. It was found that the presence of shallow surface features can help to separate mixed lubricated rubbing surfaces more efficiently than it could be suggested from the results obtained with smooth surfaces.
Czech abstract
Článek shrnuje výsledky studia chování povrchových nerovností při rozběhu nekonformních kontaktů provozovaných za podmínek smíšeného mazání. Je ukázán vliv modelových i reálných povrchových nerovností.
English abstract
The start up operation of mixed lubricated contacts represents one of the transient conditions that bring the risk of the surface damage because of asperities interactions. This paper focuses on the effects of both artificially produced and real roughness features on mixed lubrication film formation during start up of non-conformal contacts operated under rolling/sliding conditions. Chromatic interferograms captured during start up enabled the detailed changes in lubrication film caused by surface features to be observed. The observation of the effects of surface dents artificially produced on the ball surface helped to better understand the behaviour of real surface topography. It was found that the presence of shallow surface features can help to separate mixed lubricated rubbing surfaces more efficiently than it could be suggested from the results obtained with smooth surfaces.
Keywords in Czech
smíšené mazání; tloušťka mazacího filmu; topografie povrchu; rozběh
Keywords in English
Mixed lubrication; Film thickness; Surface topography; Start up
RIV year
2009
Released
21.12.2009
Publisher
Elsevier
Location
EU
ISSN
0301-679X
Journal
Tribology International
Volume
43
Number
4
Pages from–to
1–9
Pages count
9
BIBTEX
@article{BUT47123,
author="Ivan {Křupka} and Petr {Svoboda} and Martin {Hartl},
title="Effect of surface topography on mixed lubrication film formation during start up under rolling/sliding conditions",
journal="Tribology International",
year="2009",
volume="43",
number="4",
month="December",
pages="1--9",
publisher="Elsevier",
address="EU",
issn="0301-679X"
}