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Electrical impedance spectroscopy enabled in-depth lubrication condition monitoring

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Title: Electrical impedance spectroscopy enabled in-depth lubrication condition monitoring
Authors: Yu, M
Zhang, J
Kirkby, T
Joedicke, A
Reddyhoff, T
Item Type: Conference Paper
Abstract: Electrical contact resistance or capacitance as measured between two interfaces of a lubricated contact has been used in tribometers, partially reflecting the lubrication condition. In contrast, the electrical impedance spectroscopy (EIS) provides rich information of magnitude/phase spectrum, which is thoroughly investigated using a combination of electrical circuit models (equivalent to the lubricated contact) and in-situ measurements with a ball-on-disc contact. Results indicate a promising potential of EIS in lubrication condition monitoring, including the variation of lubricant film thickness as estimated using high-frequency magnitude response; the transition between full-film, mixed, and boundary lubrication regimes, as differentiated using extracted electrical resistance together with phase spectrum; the forming of anti-wear boundary film, where extra resistor/capacitor are added; and the degradation of lubricant, such as fuel dilution, oil oxidization, and water emulsifying.
Issue Date: 15-May-2022
Date of Acceptance: 2-Dec-2021
URI: http://hdl.handle.net/10044/1/93182
Copyright Statement: © 2022 The Author(s)
Conference Name: The 2022 STLE Annual Meeting & Exhibition
Publication Status: Published
Start Date: 2022-05-15
Finish Date: 2021-05-19
Conference Place: Orlando, US
Appears in Collections:Mechanical Engineering
Faculty of Engineering