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Development of an ultrasonic sensing...

Schirru, Michele.

Development of an ultrasonic sensing technique to measure lubricant viscosity in engine journal bearing in-situ

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development of an ultrasonic sensing technique to measure lubricant viscosity in engine journal bearing in-situby Michele Schirru.
作者:	Schirru, Michele.
出版者:	Cham :Springer International Publishing :2017.
面頁冊數:	xvi ,167 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
標題:	Lubricating oilsViscosity.
電子資源:	http://dx.doi.org/10.1007/978-3-319-53408-4
ISBN:	9783319534084$q(electronic bk.)

Development of an ultrasonic sensing technique to measure lubricant viscosity in engine journal bearing in-situ
Schirru, Michele.

Development of an ultrasonic sensing technique to measure lubricant viscosity in engine journal bearing in-situ[electronic resource] /by Michele Schirru. - Cham :Springer International Publishing :2017. - xvi ,167 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- Background on Viscosity and Lubrication -- Background on Ultrasound -- Literature review -- A Novel Ultrasonic Model for Non-Newtonian Fluids -- Viscosity Measurement at an Aluminium-Oil Boundary -- The Matching Layer Method -- Viscosity Measurement in a Journal Bearing -- Conclusions.

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.

ISBN: 9783319534084$q(electronic bk.)

Standard No.: 10.1007/978-3-319-53408-4doiSubjects--Topical Terms:

774093
Lubricating oils
--Viscosity.

LC Class. No.: TL153.5

Dewey Class. No.: 629.255

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