Multichannel optical sensor for oil film pressure measurement in journal bearings

Helena Ronkainen, Ismo Vessonen, Markku Kapulainen, Ingmar S. Stuns, Simo Varjus, Ari Hokkanen, Antti Valkonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


The optical sensor design developed for experimental determination of oil film pressure was used in journal bearing tests. The pressure was measured with both static and dynamic load conditions with different loads and speeds. The pressure measured in dynamic load tests with optical sensors mounted in the center line of the journal bearing showed good sensitivity and repeatability. In the static load tests different pressure behaviour was observed for sensors situated in the inlet and in the outlet region of the journal bearing and features, such as cavitation in the outlet region could be detected.
Original languageEnglish
Title of host publicationProceedings of Nordtrib 2010: 14th Nordic Symposium on Tribology
Subtitle of host publicationStorforsen, Sweden 8.-11.6.2010
PublisherLuleå University of Technology
Number of pages8
ISBN (Electronic)978-91-7439-124-4
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication


  • optical sensor
  • oil film pressure
  • journal bearings
  • tribology

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