Dielectric thermoscopy characterization of water contaminated grease

Nicholas Dittes, Anders Pettersson, Pär Marklund, Defeng Lang, Piet M. Lugt

Research output: Contribution to specialist publicationArticleProfessional

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Abstract

The temperature dependence on the dielectric properties of water-contaminated grease is investigated in this article. The purpose of this investigation was to identify the dielectric properties that could be measured to differentiate varying levels of water contamination in calcium sulfonate complex (CaS-X) grease with three different test cells with the purpose of eventually developing a grease condition sensor. Measuring the change in dielectric constant over a small temperature change yielded useful estimations of water content and amount of grease where the added water content ranged from 0.22% to about 5.5%. Additionally, other parameters such as incomplete fill/coverage of the sensors were investigated as a prestudy. The results from this set of experiments show that the measurement has potential to be developed into a condition monitoring sensor in the future.

Original languageEnglish
Pages60-73
Number of pages14
Volume74
No.3
Specialist publicationTribology and Lubrication Technology
DOIs
Publication statusPublished - Mar 2018

Keywords

  • Condition monitoring
  • Lubricating grease
  • Water contamination
  • n/a OA procedure

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