Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electrical resistivity and conductivity of greases: an initial study
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
2002 (English)In: Lubrication Science, ISSN 0954-0075, E-ISSN 1557-6833, Vol. 15, no 1, p. 33-50Article in journal (Refereed) Published
Abstract [en]

Investigations of railway wagons fitted with rolling-element bearings have shown damage to the bearings from the passage of electric current. This also occurs in railway wagons without an electric energy consumption of their own, because of residual currents from electric locomotives. This phenomenon gives rise to technical, financial, and even safety problems. This paper reviews research in the field of rolling-element bearings exposed to electric currents. The paper also reports on an ongoing study undertaken to understand the mechanism of current flow and the role of lubricants in the associated damage, and to identify the possibilities of minimising bearing damage. The obvious solution to this problem is to use optimised greases, i.e., with high electrical conductivity and good lubricating ability. In the preliminary work reported here a number of greases for railway use were tested to determine their electrical conductivity in static and dynamic situations. These tests were performed using specially designed apparatus, and significant initial information about the electrical properties of greases has been obtained in this research, for example, that there is a correlation between the electrical conductance under static and dynamic conditions. All the greases tested showed comparatively high resistivity values, which could be one explanation for the bearing damage observed.

Place, publisher, year, edition, pages
2002. Vol. 15, no 1, p. 33-50
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-9850DOI: 10.1002/ls.3010150104Local ID: 88b93470-eac8-11dc-9508-000ea68e967bOAI: oai:DiVA.org:ltu-9850DiVA, id: diva2:982788
Note
Validerad; 2002; 20080305 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Eriksson, ErlandNygård, SvenLundberg, Jan

Search in DiVA

By author/editor
Eriksson, ErlandNygård, SvenLundberg, Jan
By organisation
Machine Elements
In the same journal
Lubrication Science
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 34 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf