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Lubricants 2017, 5(4), 47; https://doi.org/10.3390/lubricants5040047

Damage Equivalent Test Methodologies as Design Elements for Journal Bearing Systems

Chair of Mechanical Engineering, Montanuniversität Leoben, 8700 Leoben, Austria
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Received: 31 October 2017 / Revised: 29 November 2017 / Accepted: 8 December 2017 / Published: 14 December 2017
(This article belongs to the Special Issue Friction and Lubrication of Sliding Bearings)
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Abstract

The current paper addresses the field of experimental research of journal bearing systems. In this regard, the challenges are dealt with concerning simultaneous testing with a close correlation to the industrial application and with a high resolution of tribological processes. Concerning this aspect, two damage equivalent laboratory test methodologies for journal slide bearing systems are presented, and their ability to visualize certain performance parameters of bearing systems are emphasized (for instance friction performance, (start stop) wear processes, and seizure events). The results clearly emphasize that the applied methodologies provide accurate findings regarding specific effects of selective parameters/changes on the performance of bearing systems, such as polymer overlays may result in improved mixed friction sliding conditions if designed properly, and they provide superior start stop wear resistance; the use of specific corrosion inhibitors can successfully prevent tribo-corrosion on bronze bearings; a decrease of oil viscosity increases solid friction share but decreases fluid friction; lubricant anti-wear additives are able to improve seizure resistance and sliding properties of bearing systems depending on formulation harmonization; and novel bearing material coatings, e.g., sputtered SnCu, can significantly improve emergency running capabilities. View Full-Text
Keywords: journal bearings; damage equivalent testing; seizure; start stop wear; simulation journal bearings; damage equivalent testing; seizure; start stop wear; simulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Summer, F.; Bergmann, P.; Grün, F. Damage Equivalent Test Methodologies as Design Elements for Journal Bearing Systems. Lubricants 2017, 5, 47.

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