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Film thickness in a ball-on-disc contact lubricated with greases, bleed oils and base oils
INEGI, Universidade do Porto.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-4271-0380
INEGI, Universidade do Porto.
ISEP, Instituto Superior de Engenharia do Porto.
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2012 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 53, p. 53-60Article in journal (Refereed) Published
Abstract [en]

Three different lubricating greases and their bleed and base oils were compared in terms of film thickness in a ball-on-disc test rig through optical interferometry. The theoretical values calculated according to Hamrock's equation are in close agreement with the base oil film thickness measurements, which validates the selected experimental methodology.The grease and bleed oil film thickness under fully flooded lubrication conditions presented quite similar behaviour and levels. Therefore, the grease film thickness under full film conditions might be predicted using their bleed oil properties, namely the viscosity and pressure-viscosity coefficient. The base and bleed oil lubricant parameter LP are proportional to the measured film thickness.A relationship between grease and the corresponding bleed oil film thickness was evidenced

Place, publisher, year, edition, pages
2012. Vol. 53, p. 53-60
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-11040DOI: 10.1016/j.triboint.2012.04.018ISI: 000305855900007Scopus ID: 2-s2.0-84860607993Local ID: 9f114086-eb89-483a-9473-dd9e9de0b4f0OAI: oai:DiVA.org:ltu-11040DiVA, id: diva2:983989
Note
Validerad; 2012; 20120502 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Björling, MarcusLarsson, Roland

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