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Review of ultrasonic-based technology for oil film thickness measurement in lubrication.

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Title: Review of ultrasonic-based technology for oil film thickness measurement in lubrication.
Authors: Dou, Pan1,2 (AUTHOR), Jia, Yaping1 (AUTHOR), Zheng, Peng1 (AUTHOR), Wu, Tonghai1 (AUTHOR) wt-h@163.com, Yu, Min3 (AUTHOR), Reddyhoff, Tom3 (AUTHOR), Peng, Zhongxiao2 (AUTHOR)
Source: Tribology International. Jan2022, Vol. 165, pN.PAG-N.PAG. 1p.
Subjects: Elastohydrodynamic lubrication, Thickness measurement, Mechanical efficiency, Signal processing
Abstract: Lubricant film thickness is the most informative variable that reflects lubrication conditions and transmission efficiency in the mechanical equipment, therefore its measurement is highly important. Despite a large number of theoretical models that have been developed to describe the lubricant film, complexities and uncertainties in a real tribo-pair contact still hinder the implementation of accurate and robust methods of in-situ film thickness measurements. Recently, ultrasonic-based measurement has been widely studied, showing promising potential owing to its non-destructive characteristics, high sensitivity, and limited physical modifications. This paper comprehensively reviews basic principles of ultrasonic-based oil film measurement; summarizes progress on calculation models and associated signal processing methods; exhibits in-lab demonstrations and in-situ applications; and discusses key technical issues and possible solutions. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Lubricant film thickness is the most informative variable that reflects lubrication conditions and transmission efficiency in the mechanical equipment, therefore its measurement is highly important. Despite a large number of theoretical models that have been developed to describe the lubricant film, complexities and uncertainties in a real tribo-pair contact still hinder the implementation of accurate and robust methods of in-situ film thickness measurements. Recently, ultrasonic-based measurement has been widely studied, showing promising potential owing to its non-destructive characteristics, high sensitivity, and limited physical modifications. This paper comprehensively reviews basic principles of ultrasonic-based oil film measurement; summarizes progress on calculation models and associated signal processing methods; exhibits in-lab demonstrations and in-situ applications; and discusses key technical issues and possible solutions. [ABSTRACT FROM AUTHOR]
ISSN:0301679X
DOI:10.1016/j.triboint.2021.107290