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007			cr cnu|||unuuu
008			170223s2017 sz ob 000 0 eng d
020			_a3319534084 _q(electronic bk.)
020			_a9783319534084 _q(electronic bk.)
020			_z3319534076
020			_z9783319534077 _q(print)
040			_aN$T _cN$T _dGW5XE _dN$T _dYDX _dEBLCP _dIDEBK _dNJR _dUAB _dOCLCF _dCOO _dIOG _dAZU _dUWO _dVT2 _dUPM _dESU _dZ5A _dJBG _dIAD _dICW _dICN _dOTZ _dOCLCQ _dU3W _dES-MaUEC _bspa
050		4	_aTL153.5 _bS357 2017 EB
100	1		_aSchirru, Michele, _eautor
245	1	0	_aDevelopment of an ultrasonic sensing technique to measure lubricant viscosity in engine journal bearing in-situ _cMichele Schirru.
264		1	_aCham, Switzerland _bSpringer _c2017.
300			_a1 recurso en línea
336			_aTexto _btxt _2rdacontent
337			_aelectrónico _bc _2rdamedia
338			_arecurso electrónico _bcr _2rdacarrier
347			_atext file _bPDF _2rda
490	0		_aSpringer theses
500			_a"Doctoral thesis accepted by the University of Sheffield, UK."
500			_aSpringerLink _bSpringer Engineering eBooks 2017 English+International
504			_aIncluye referencias bibliográficas
505	0		_aSupervisor's Foreword; Contents; Nomenclature; Introduction; Thesis Layout; Summary; 1 Introduction; 1.1 Statement of the Problem; 1.2 Project Aims; 1.3 Thesis Layout; References; 2 Background on Viscosity and Lubrication; 2.1 Definition of Viscosity; 2.1.1 Viscosity Relation with Temperature; 2.1.2 Viscosity Index; 2.1.3 Viscosity and Pressure; 2.1.4 Viscosity and Shear Rate; 2.2 Viscosity Measurement; 2.2.1 Capillary Viscometers; 2.2.2 Rotational Viscometers; 2.2.3 Falling Body Viscometers; 2.2.4 Vibrational Viscometers; 2.2.5 High Pressure Viscometers; 2.2.6 High Shear Viscometers.
505	8		_a2.3 Engine Lubricating Oil Composition2.3.1 Base Oils; 2.3.2 Viscosity Modifiers; 2.3.3 Detergents; 2.4 Oil Classification by Viscosity; 2.5 Lubrication Principles in Mechanical Components; 2.5.1 The Stribeck Curve; 2.5.2 Journal Bearing Lubrication; 2.5.3 Considerations for Journal Bearing Design; 2.6 Conclusions; References; 3 Background on Ultrasound; 3.1 Introduction to Ultrasound; 3.2 Ultrasound and Material Properties; 3.3 Ultrasonic Transducers; 3.3.1 The Piezoelectric Effect; 3.3.2 Ultrasonic Transducer Type; 3.3.3 Other Type of Ultrasonic Transducers.
505	8		_a3.4 Characteristics of Ultrasonic Signals3.5 Transducers Arrangements; 3.6 Reflection of Ultrasound Waves at Interface; 3.6.1 Reflection and Transmission in a Three-Layered System; 3.6.2 Reflection of Shear Waves at Solid-Liquid Boundary; 3.7 Conclusions; References; 4 Literature Review; 4.1 The Crystal Resonator; 4.2 The Resonating Plate/Rod; 4.3 Reflectance Methodologies; 4.3.1 The Newtonian Reflection Model; 4.3.2 The Greenwood Model; 4.4 The Attenuation Method; 4.4.1 Ultrasonic Spectroscopy Methods; 4.5 Ultrasonic Resonator to Analyse Lubricating Oils.
505	8		_a4.6 Comparison of Ultrasonic Viscometers and Conventional Viscometers4.7 Conclusions; References; 5 A Novel Ultrasonic Model for Non-Newtonian Fluids; 5.1 Introduction; 5.2 The Maxwell Fluid Model; 5.3 The Ultrasonic Model for Non-Newtonian Fluids; 5.4 Comparison of Models; 5.5 Non-Newtonian Ultrasonic Model Sensitivity Analysis; 5.5.1 Reflection Coefficient; 5.5.2 Fluid Density; 5.5.3 Solid Density; 5.6 Conclusions; References; 6 Viscosity Measurements at an Aluminium-Oil Boundary; 6.1 Ultrasonic Apparatus; 6.1.1 The Transducers; 6.1.2 The Cables; 6.1.3 Thermocouple Calibration.
505	8		_a6.1.4 Test Lubricants6.1.5 Experimental Protocol; 6.2 Signal Processing; 6.3 Conventional Reflectance Technique: Results; 6.4 Conventional Reflectance Technique: Acoustic Mismatch; 6.5 Conclusions; References; 7 The Matching Layer Method; 7.1 Origins of the Matching Layer Methodology; 7.2 Matching Layer Theory; 7.3 Measurement Apparatus; 7.3.1 Instrumentation; 7.3.2 Test Cell and Matching Layer; 7.3.3 Samples Tested; 7.4 Signal Processing and Data Analysis; 7.5 Results; 7.5.1 Measurement Sensitivity Increment; 7.5.2 Viscosity Results for Newtonian Oils.
520	3		_aThis 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.
650		7	_aAceites lubricantes _2embne _0(OCoLC)fst01003338 _0 _9666189
856	4	0	_uhttps://go.openathens.net/redirector/universidadeuropea.es?url=http://link.springer.com/10.1007/978-3-319-53408-4 _zAcceso a este recurso digital (usuarios Universidad Europea de Madrid)
988			_aEBOOK, asignarmaterias, EBSPRINGER_2017C
998			_b02/2018 _dz _e- _zSI
999			_c95435 _d95435 _x1