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Assessment of polymer composites for hydrodynamic journal-bearing applications
Luleå University of Technology, Division of Machine Elements.
2009 (English)In: Lubrication Science, ISSN 0954-0075, Vol. 21, no 8, 331-341 p.Article in journal (Refereed) Published
Abstract [en]

Polymer composites are used as facing materials in hydrodynamic bearings for their low friction and compliant properties, which play an important role during machinery operation. In journal bearings, this low friction property can be of significant importance during start and stop cycles when insufficient oil is available to fully separate the surfaces in relative motion. Current work is aimed at determining a suitable material for use in hydrodynamic journal bearings for applications in hydroelectric power plants. This study investigates friction and wear encountered during the transition from the stationary state to operational speed (acceleration) during initial start-up. This is examined for virgin poly-tetra-fluoro-ethylene (PTFE) together with a series of commercially available PTFE-based composites and a babbitt material in boundary/mixed lubrication conditions. Tests are performed using standard laboratory block-on-ring test apparatus with a VG32 mineral oil.

Place, publisher, year, edition, pages
2009. Vol. 21, no 8, 331-341 p.
Keyword [en]
Break-away friction, Hydrodynamic bearings, PTFE, Wear
National Category
Fluid Mechanics and Acoustics Tribology
Identifiers
URN: urn:nbn:se:kth:diva-80228DOI: 10.1002/ls.92ISI: 000270774000004OAI: oai:DiVA.org:kth-80228DiVA: diva2:496550
Note
QC 20120229Available from: 2012-02-10 Created: 2012-02-09 Last updated: 2012-02-29Bibliographically approved

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