On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU139963" target="_blank" >RIV/00216305:26210/20:PU139963 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2075-4442/8/2/12/pdf" target="_blank" >https://www.mdpi.com/2075-4442/8/2/12/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/lubricants8020012" target="_blank" >10.3390/lubricants8020012</a>
Alternative languages
Result language
angličtina
Original language name
On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication
Original language description
This paper deals with an experimental study of film thickness and friction of commercial-grade grease and its base oil in a highly loaded contact. In-situ measurements were conducted for two surface textures on a ball-on-disc optical tribometer at the border of mixed lubrication. At high speeds, the film thickness and the friction of grease correspond with the base oil, while, the thickener enters the contact area and locally affects the film thickness and friction at low speeds. It was found out that the thickener starts to enter the contact area approximately at the same speed when the base oil friction increases on Stribeck curve but without direct solid to solid contact. It indicates that both effects can have the same origin. Change of lubricant flow in contact inlet area was discussed as a possible explanation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/GA17-23235S" target="_blank" >GA17-23235S: Effect of thermal properties of contacting bodies on lubricant flow in Hertzian non-smooth contacts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Lubricants
ISSN
2075-4442
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
11
Pages from-to
1-11
UT code for WoS article
000519110900007
EID of the result in the Scopus database
2-s2.0-85080062452