Table of contents
About this book
This thesis presents a novel ultrasonic instrument for non-invasive and in-situ characterization of journal bearing lubricant viscosity. In particular, the application to journal bearings is described by non-invasively measuring the viscosity and localized power losses throughout operation.
This ultrasonic viscometer is based on the reflection of polarized shear waves from a thin resonating coating layer to increase the measurement sensitivity, in comparison to conventional ultrasonic methods. This instrument allows for a full engine oil viscoelastic characterization in-situ.
The book investigates the effects of temperature, pressure and shear rate, and describes in detail the ultrasonic setup and method. Further, it demonstrates that the same technique can be applied similarly to monitor the lubrication of other engine components. As such, it offers a unique instrument that can drive the research of oil formulations to improve engine performance and fulfill the requirements of international fuel economy regulations.
Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films Engineering Acoustics Automotive Engineering
- DOI https://doi.org/10.1007/978-3-319-53408-4
- Copyright Information Springer International Publishing AG 2017
- Publisher Name Springer, Cham
- eBook Packages Engineering
- Print ISBN 978-3-319-53407-7
- Online ISBN 978-3-319-53408-4
- Series Print ISSN 2190-5053
- Series Online ISSN 2190-5061
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