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Grease soap particles passing through an elastohydrodynamic contact under side slip conditions
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-9110-2819
2000 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 214, no 4, p. 317-325Article in journal (Refereed) Published
Abstract [en]

In a previous investigation, grease thickener fibres were tracked as they passed through an elastohydrodynamic (EHD) contact in pure rolling using interferometry in a standard ball-and-disc apparatus. In order to capture single thickener fibres, a high-speed video camera was used. Here, the experiments have been repeated introducing different amounts of side slip for different rolling speeds and a faster video camera capable of capturing 4500 frames/s. The contact was lubricated with a continuous supply of grease. Two greases, based on the same synthetic poly(α-olefin) but thickened with Li-12-OH and lithium complex soap respectively, were studied. It was observed that the thickener fibres were stretched both before entering the contact and as they passed through it. Fibres seem to avoid the minimum film thickness regions and, if they enter, the film is restored immediately after passage.

Place, publisher, year, edition, pages
2000. Vol. 214, no 4, p. 317-325
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-6379DOI: 10.1243/1350650001543205ISI: 000089181000002Local ID: 49c35b20-b783-11db-abff-000ea68e967bOAI: oai:DiVA.org:ltu-6379DiVA, id: diva2:979256
Note
Validerad; 2000; 20070208 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Larsson, Roland

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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