Development Of An Ultrasonic Sensing Technique To Measure Lubricant Viscosity In Engine Journal Bearing In Situ

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Development of an Ultrasonic Sensing Technique to Measure Lubricant Viscosity in Engine Journal Bearing In-Situ

Michele Schirru
Development of an Ultrasonic Sensing Technique to Measure Lubricant Viscosity in Engine Journal Bearing In Situ Book PDF

Author : Michele Schirru
Publisher : Springer
Page : 167 pages
File Size : 42,8 Mb
Release : 2017-02-21
Category : Technology & Engineering
ISBN : 9783319534084

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Development of an Ultrasonic Sensing Technique to Measure Lubricant Viscosity in Engine Journal Bearing In-Situ by Michele Schirru Pdf

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.

Ultrasonics

Dale Ensminger,Leonard J. Bond
Ultrasonics Book PDF

Author : Dale Ensminger,Leonard J. Bond
Publisher : CRC Press
Page : 904 pages
File Size : 54,6 Mb
Release : 2024-02-21
Category : Science
ISBN : 9781000994957

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Ultrasonics by Dale Ensminger,Leonard J. Bond Pdf

Updated, revised, and restructured to reflect the latest advances in science and applications, the fourth edition of this best-selling industry and research reference covers the fundamental physical acoustics of ultrasonics and transducers, with a focus on piezoelectric and magnetostrictive modalities. It then discusses the full breadth of ultrasonics applications involving low power (sensing) and high power (processing) for research, industrial, and medical use. This book includes new content covering computer modeling used for acoustic and elastic wave phenomena, including scattering, mode conversion, transmission through layered media, Rayleigh and Lamb waves and flexural plates, modern horn design tools, Langevin transducers, and material characterization. There is more attention on process monitoring and advanced nondestructive testing and evaluation (NDT/NDE), including phased array ultrasound (PAUT), long-range inspection, using guided ultrasonic waves (GUW), internally rotary inspection systems (IRIS), time-of-flight diffraction (TOFD), and acoustic emission (AE). These methods are discussed and applied to both metals and nonmetals using illustrations in various industries, including now additionally for food and beverage products. The topics of defect sizing, capabilities, and limitations, including the probability of detection (POD), are introduced. Three chapters provide a new treatment of high-power ultrasonics, for both fluids and solids, and again, with examples of industrial engineering, food and beverage, pharmaceuticals, petrochemicals, and other process applications. Expanded coverage is given to medical and biological applications, covering diagnostics, therapy, and, at the highest powers, surgery. Key Features Provides an overview of fundamental analysis and transducer technologies needed to design and develop both measurement and processing systems Considers applications in material characterization and metrology Covers ultrasonic nondestructive testing and evaluation and high-power ultrasonics, which involves interactions that change the state of material Highlights medical and biomedical applications of ultrasound, focusing on the physical acoustics and the technology employed for diagnosis, therapy, surgery, and research This book is intended for both the undergraduate and graduate scientists and engineers, as well as the working professional, who seeks to understand the fundamentals together with a holistic treatment of the field of ultrasonics and its diversity of applications.

Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation

Robert B. Rhodes
Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation Book PDF

Author : Robert B. Rhodes
Publisher : ASTM International
Page : 190 pages
File Size : 48,9 Mb
Release : 1992
Category : Automobiles
ISBN : 9780803114388

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Low Temperature Lubricant Rheology Measurement and Relevance to Engine Operation by Robert B. Rhodes Pdf

Papers were presented at a symposium held in Austin, Texas, in December 1991. Subjects include a history of ASTM accomplishments in low temperature engine oil rheology from 1966-1992, critical aspects of pumping viscosity by mini-rotary viscometer, the scanning Brookfield technique of low temperatur

High-temperature, High-shear (HTHS) Oil Viscosity

James A. Spearot
High temperature High shear HTHS Oil Viscosity Book PDF

Author : James A. Spearot
Publisher : ASTM International
Page : 109 pages
File Size : 46,8 Mb
Release : 1989
Category : Automobiles
ISBN : 9780803112803

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High-temperature, High-shear (HTHS) Oil Viscosity by James A. Spearot Pdf

Nanolubricants

Jean Michel Martin,Nobuo Ohmae
Nanolubricants Book PDF

Author : Jean Michel Martin,Nobuo Ohmae
Publisher : John Wiley & Sons
Page : 246 pages
File Size : 49,5 Mb
Release : 2008-04-30
Category : Science
ISBN : 9780470987704

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Nanolubricants by Jean Michel Martin,Nobuo Ohmae Pdf

The technology involved in lubrication by nanoparticles is a rapidly developing scientific area and one that has been watched with interest for the past ten years. Nanolubrication offers a solution to many problems associated with traditional lubricants that contain sulphur and phosphorus; and though for some time the production of nanoparticles was restricted by the technologies available, today synthesis methods have been improved to such a level that it is possible to produce large quantities relatively cheaply and efficiently. Nanolubricants develops a new concept of lubrication, based on these nanoparticles, and along with the authors’ own research it synthesises the information available on the topic of nanolubrication from existing literature and presents it in a concise form. Describes the many advantages and potential applications of nanotechnology in the tribological field. Offers a full review of the state-of-the-art as well as much original research that is yet unpublished. Includes sections on boundary lubrication by colloïdal systems, nanolubricants made of metal dichalcogenides, carbon-based nanolubricants, overbased detergent salts, nanolubricants made of metals and boron-based solid nanolubricants and lubrication additives. Authored by highly regarded experts in the field with contributions from leading international academics. Nanolubricants will appeal to postgraduate students, academics and researchers in mechanical engineering, chemical engineering and materials science. It should also be of interest to practising engineers with petroleum companies and mechanical manufacturers.

Applied Mechanics Reviews

Anonim
Applied Mechanics Reviews Book PDF

Author : Anonim
Publisher : Unknown
Page : 530 pages
File Size : 52,6 Mb
Release : 1993
Category : Mechanics, Applied
ISBN : UIUC:30112008993641

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Applied Mechanics Reviews by Anonim Pdf

The Relationship Between Engine Oil Viscosity and Engine Performance

Ross M. Stewart,Theodore W. Selby,Society of Automotive Engineers,American Society for Testing and Materials
The Relationship Between Engine Oil Viscosity and Engine Performance Book PDF

Author : Ross M. Stewart,Theodore W. Selby,Society of Automotive Engineers,American Society for Testing and Materials
Publisher : Unknown
Page : 108 pages
File Size : 55,5 Mb
Release : 1977
Category : Automobiles
ISBN : LCCN:77150198

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The Relationship Between Engine Oil Viscosity and Engine Performance by Ross M. Stewart,Theodore W. Selby,Society of Automotive Engineers,American Society for Testing and Materials Pdf