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Visualising the lubrication condition in hydrodynamic journal bearings using impedance measurement

Koetz, Florian ; Schmitt, Florian ; Kirchner, Eckhard ; Zancul, Eduardo (2024)
Visualising the lubrication condition in hydrodynamic journal bearings using impedance measurement.
In: Frontiers in Mechanical Engineering, 2024, 10
doi: 10.26083/tuprints-00028051
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Visualising the lubrication condition in hydrodynamic journal bearings using impedance measurement
Language: English
Date: 16 September 2024
Place of Publication: Darmstadt
Year of primary publication: 21 August 2024
Place of primary publication: Lausanne
Publisher: Frontiers Media S.A.
Journal or Publication Title: Frontiers in Mechanical Engineering
Volume of the journal: 10
Collation: 15 Seiten
DOI: 10.26083/tuprints-00028051
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Introduction: The demand to increase reliability and reduce maintenance costs drives the search for new condition monitoring solutions of machines. Bearings are of special interest in this matter as they are main contributors to machine downtime. Therefore, this article investigates the electric behavior of a hydrodynamic journal bearing using impedance measurement.

Methods: For that purpose measurements are taken in boundary lubrication, mixed lubrication and hydrodynamic lubrication of a hydrodynamic journal bearing. In order to interpret the behaviour observed in these measurements, a phenomenological model is developed using the quantitative working space model. The measurement results are also interpreted using analogies to the Stribeck curve as a known tribological model. Additionally, measurements in mixed lubrication are analysed in detail.

Results: These measurements show that the electric behaviour of journal bearings changes significantly within the mixed lubrication regime. This change in behaviour shows three distinct states within mixed lubrication which helps to identify destructive operating conditions. Furthermore, the measurements potentially allow the detection of deformation or damage of the bearing in mixed lubrication.

Discussion: The quantitative analysis of the electric behaviour of journal bearings is possible in the mixed lubrication regime and can be used in future to extract condition and operating information from a system during operation.

Uncontrolled Keywords: journal bearing, condition monitoring, in-situ measurement, impedance measurement, quantitative working space model
Identification Number: Artikel-ID: 1456575
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-280518
Additional Information:

This article is part of the Research Topic: Visualization Techniques in Tribology

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Product Development and Machine Elements (pmd)
Date Deposited: 16 Sep 2024 11:18
Last Modified: 30 Sep 2024 07:49
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/28051
PPN: 521765072
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