Life Cycle Tribology

31st Leeds-Lyon Tribology Symposium

1st Edition, Volume 48 - December 22, 2005
Editors: Duncan Dowson, M. Priest, G. Dalmaz, A A Lubrecht
Language: English
Hardback ISBN:
9 7 8 - 0 - 4 4 4 - 5 1 6 8 7 - 9
eBook ISBN:
9 7 8 - 0 - 0 8 - 0 4 7 8 9 4 - 4

The 31st Leeds-Lyon Symposium on Tribology was held at Trinity and All Saints College in Leeds under the title "Life Cycle Tribology" from Tuesday 7th September until Friday 10th… Read more

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The 31st Leeds-Lyon Symposium on Tribology was held at Trinity and All Saints College in Leeds under the title "Life Cycle Tribology" from Tuesday 7th September until Friday 10th September 2004. Over the three days of presentations that followed, life cycle tribology was explored across a range of areas including automotive tribology, bearings, bio-degradability and sustainability, bio-tribology, coatings, condition monitoring, contact mechanics, debris effects, elastohydrodynamic lubrication, lubricants, machine systems, nanotribology, rolling contact fatigue, transmissions, tribochemistry and wear and failure. Invited talks in these fields were presented by leading international researchers and practitioners, namely C.J. Hooke, J.A. Williams, R.J.K. Wood, G. Isaac, S.C. Tung, D. Price, I. Sherrington, M. Hadfield, K. Kato, R.I. Taylor, H.P. Evans, R.S. Dwyer-Joyce and H. Rahnejat.

Introduction
A Short History and Summary of Publication Arrangements for the Leeds/Lyon Symposia on Tribology; Symposia-1-31, (1974-2004)
Refereeing
Session I: Keynote Addresses
- Technology of a Traction Drive CVT - Past, Present And Future
  - 1 INTRODUCTION
  - 2 HISTORY OF TRACTION DRIVE CVT
  - 3 TECHNOLOGY OF TOROIDAL CVT
- Life Cycle Engineering and Virtual Product Development – the Role of Tribology
  - ABSTRACT
  - 1 Introduction
  - 2 TRIBOLOGY’S CONTRIBUTIONS TO “LIFE CYCLE ENGINEERING”
  - 3 OUTLOOK TO THE FUTURE
Session II: Elastohydrodynamic Lubrication 1
- The effect of roughness in EHL contacts
  - 1 INTRODUCTION
  - 2 NOTATION
  - 3 EFFECT OF ROUGHNESS
  - 4 CONDITIONS IN THE CONJUNCTION
  - 5 THE COMPLEMENTARY WAVE
  - 6 EFFECT OF ROUGHNESS AMPLITUDE
  - 7 CONCLUSIONS
- Complete numerical analysis for mixed boundary and thermal elastohydrodynamic lubrication in steady-state point contacts
  - Abstract
  - NOMENCLATURE
  - 1 INTRODUCTION
  - 2 BASIC EQUATIONS
- The influence of slide-to-roll ratio on lubricant film thickness distribution in the vicinity of real roughness features passing through EHD point contact
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL METHOD
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - ACKNOWLEDGEMENTS
- Unsteady EHL: An inverse hydrodynamic formulation
  - Abstract
  - 1 INTRODUCTION
  - 2 ANALYSIS
  - 3 NUMERICAL EXAMPLE: NORMAL APPROACH
  - 4 FUTURE WORK
  - ACKNOWLEDGEMENTS
  - PRINCIPAL NOMENCLATURE
Session III: Nanotribology 1
- Some aspects of tribological behaviour at the micro-scale – with particular reference to MEMS and MMAs
  - Abstract
  - 1 INTRODUCTION
  - 2 INFLUENCE OF SCALING
  - 3 TRIBOLOGICAL CHALLENGES IN MEMS
  - 4 MEASURING FRICTION AND WEAR IN MEMS DEVICES
  - 5 CONCLUSIONS
  - 6 ACKNOWLEDEGEMENTS
- Chain matching effects of base oils and additives in nanotribology of boundary films
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DETAILS
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - ACKNOWLEDGEMENT
- Lubrication properties of AI₂O₃ nanoparticles in aqueous suspensions
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
Session IV: Lubricants 1
- Electrostatic monitoring of the effects of carbon black on lubricated steel/steel sliding contacts
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULTS AND DISCUSSION
- Evaluation of Ionic Liquids for the Application as Lubricants
  - Abstract
  - 1 INTRODUCTION
  - 2 SAMPLES
  - 3 EXPERIMENTS
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSIONS
  - 6 FUTURE WORK
  - 7 ACKNOWLEDGEMENT
- Measurement method of physical properties of adsorbed layers
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTS
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - ACKNOWLEDGEMENTS
- Effectiveness of boundary lubricant additives on some coated surfaces
  - Abstract
  - 1 INTRODUCTION
  - 2 BACKGROUND
  - 3 EXPERIMENTAL TECHNIQUES
  - 4 TEST MATERIALS
  - 5 FILM THICKNESS RESULTS
  - 6 FRICTION COEFFICIENT RESULTS
  - 7 CONCLUSIONS
Session V: Bio-Tribology 1
- Life Cycle Aspects of Total Replacement Hip Joints
  - Abstract
  - 1 INTRODUCTION
  - 2 EARLY DAYS
  - 3 THE LONG-TERM EXPERIENCE WITH POLYETHYLENE
  - 4 IMPROVED TESTING TECHNIQUES
  - 5 SOLUTIONS WITH POLYETHYLENE
  - 6 SUMMARY–POLYETHYLENE BEARINGS
  - 7 THE RETURN TO HARD-ON-HARD
  - 8 CONTEMPORARY ISSUES WITH METAL-ON-METAL BEARINGS
  - 9 FACTORS AFFECTING HARD-ON-HARD WEAR
  - 10 OPTIMISING METAL/METAL BEARINGS
  - 11 CERAMIC-ON-CERAMIC
  - 12 THE ‘CERAMIC ANOMALY’
  - 13 WEAR RESISTANT COATINGS
  - 14 SUMMARY HARD/HARD BEARINGS
  - 15 FINAL CONCLUSIONS
- Evaluation of wear resistance of ultra-high molecular weight polyethylene for joint prostheses in the multi-directional pin-on-plate tester
  - Abstract
  - 1 Introduction
  - 2 Materials and Methods
  - 3 Results
  - 4 Discussion
  - 5 Conclusions
  - 6 Acknowledgments
- The influences of lipid and protein concentration on wear of ultra-high molecular weight polyethylene
  - Abstract
  - 1 INTRODUCTION
  - 2 MATERIALS AND METHODS
  - 3 RESULTS
  - 4 DISCUSIONS
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENT
- Wear process under concentrated contact in alumina/alumina hip joint
  - Abstract
  - 1 INTRODUCTION
  - 2 MATERIALS AND METHOD
  - 3 RESULT
  - 4 DISCUSSION
  - 5 A STANDARD TEST FOR WEAR OF CERAMIC MATERIALS
  - 6 SUMMARY
Session VI: Coatings 1
- An In-Situ Tribotest Method Designed for Predicting Wear Life and Frictional Performance During the Aluminum Forming Process
  - ABSTRACT
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DESIGN
  - 3 EXPERIMENTAL RESULTS AND DISCUSSION
  - 4 SUMMARY AND CONCLUSION
  - 5 ACKNOWLEDGMENTS
- Durability of perfluoropolyether nanolubricant film fixed on diamond-like carbon surfaces
  - Abstract
  - 1 INTRODUCTION
  - 2 SAMPLE PREPARATION
  - 3 MEASUREMENTS
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSION
- Rolling and rolling-to-sliding contact behaviour of DLC coatings
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
Session VII: Transmissions
- A Full Toroidal Traction Drive IVT for Automotive Volume Production
  - Abstract
  - 1 INTRODUCTION
  - 2 BACKGROUND
  - 3 THE EFFECT OF ROLLER COOLING ADVANCES ON POWER CAPACITY
  - 4 ADVANCES IN TRACTION FLUIDS
  - 5 VARIATOR EFFICIENCY
  - 6 DURABILITY
  - 7 MECHANICAL OPTIMISATION
  - 8 THE PRE-PRODUCTION TRANSMISSION
  - 9 CONCLUSION
  - 10 ACKNOWLEDGEMENTS
- Effects of the Maximum Hertzian Pressure on the Maximum Traction Coefficient Under EHL Conditions
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 NUMERICAL PROCEDURE
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSIONS
- Structure and mechanical property of boundary lubricating film formed in belt-type CVT oil
  - Abstract
  - 1 Introduction
  - 2 Experimental Details
  - 3 Results and discussion
  - 5 Ackowledgenents
- Efficiency modelling in the full toroidal variator: Investigation into optimisation of EHL contact conditions to maximize contact efficiency.
  - Abstract
  - 1 INTRODUCTION
  - 2 NUMERICAL MODELING OF THE EHL CONTACTS OF THE FULL TOROIDAL VARIATOR
  - 3 MEASUREMENT OF VARIATOR EFFICIENCY AND THE EFFECTS OF ENDLOAD
  - 4 VARIATOR DESIGN TOOL
  - 5 VARIATOR DESIGN TOOL FURTHER INVESTIGATION OF RELATIONSHIP BETWEEN APPLIED ENDLOAD AND VARIATOR EFFICIENCY
  - 6 CONCLUSIONS
Session VIII: Tribochemistry
- Tribochemical approach toward mechanism for synergism of lubricant additives on antiwear and friction reducing properties
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - ACKNOWLEDGENTS
- Tribochemistry of mono molecular additive films on metal surfaces, investigated by XPS and HFRR
  - Abstract
  - 1 INTRODUCTION
  - 2 MATERIALS AND METHODS
  - 3 RESULTS
  - 4 DISCUSSION, CONCLUSION AND OUTLOOK
  - ACKNOWLEDGEMENT
- Water-accelerated chemical reaction for producing gear teeth with high form accuracy and fine surface finish
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 Results and discussion
  - 4 Conclusions
  - Acknowledgements
Session IX: Condition Monitoring
- Condition Monitoring as a Tool to Aid Compliance with ISO 14000
  - Abstract
  - 1 INTRODUCTION
  - 2 AIMS AND GENERAL PRINCIPLES OF ISO 14000
  - 3 CONDITION MONITORING AND ISO 14000
  - 4 ASSESSING THE CONDITION OF LUBRICANTS.
  - 5 CASE STUDIES
  - 6 FUTURE DEVELOPMENTS
  - 7 CONCLUSIONS
- Evaluation of an Ultrasonic Method for Measurement of Oil Film Thickness in a Hydraulic Motor Piston Ring
  - Abstract
  - 1 INTRODUCTION
  - 2 BACKGROUND
  - 3 ULTRASONIC MEASUREMENT APPARATUS
  - 4 PISTON RING AND CYLINDER APPARATUS
  - 5 RESULTS
  - 6 DISCUSSION
  - 7 CONCULSIONS
- Ultrasonic Reflection from Mixed Liquid-Solid Contacts and the Determination of Interface Stiffness
  - Abstract
  - 1 INTRODUCTION
  - 2 BACKGROUND
  - 3 APPARATUS AND METHOD
  - 4 RESULTS
  - 5 ANALYSIS
  - 6 DISCUSSION
  - 7 CONCLUSIONS
Session X: Rolling Contact Fatigue
- Extended finite element method for numerical simulation of 3D fatigue crack growth
  - Abstract
  - 1 INTRODUCTION
  - 2 X-FEM CONCEPTS FOR CRACK PROPAGATION ANALYSIS
  - 3 NEW RESULTS FOR NON LINEAR SITUATIONS
  - 4 EXPERIMENTAL CRACK PROPAGATION INTERPRETATION
  - 5 CONCLUSION
- A mixed mode fatigue crack model with the coupled X-FEM/LATIN method. Application to rolling contact fatigue (RCF)
  - Abstract
  - 1 INTRODUCTION
  - 2 CONTINUOUS FORMULATION OF A FRICTIONAL CONTACT PROBLEM
  - 3 VARIATIONAL FORMULATION
  - 4 DISCRETISATION
- Study on Rolling Contact Fatigue in Hydrogen Atmosphere - Improvement of Rolling Contact Fatigue Life by Formation of Surface Film -
  - Abstract
  - 1 INTRODUCTION
  - 2 TEST METHOD
  - 3 TEST RESULT
  - 4 DISCUSSION
  - 5 CONCLUSION
- Rolling Contact Fatigue Life of Bearing Steel Rollers Lubricated with Low Viscosity Traction Oil
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 TEST RESULTS AND DISCUSSION
  - 4 TEHL ANALYSIS
  - 5 CONCLUSIONS
  - ACKNOWLEDGMENTS
  - APPENDIX
  - NOMENCLATURE
Session XI: Bio-Tribology 2
- Diatom Biotribology
  - Abstract
  - 1 INTRODUCTION
  - 2 MICRO- AND NANOSYSTEMS
  - 3 APPROPRIATE TECHNOLOGY AND BIOMIMETICS
  - 4 DIATOMS AS TRIBOLOGICAL MODEL SYSTEMS
  - 5 CONCLUSIONS AND OUTLOOK
  - ACKNOWLEDGEMENT
- Friction of Contact Lenses: Silicone Hydrogel versus Conventional Hydrogel
  - Abstract
  - 1 INTRODUCTION
  - 2 BACKGROUND
  - 3.0 MATERIALS AND METHODS
  - 4.0 RESULTS
  - 5 DISCUSSION
  - 6 CONCLUSIONS
  - 7 ACKNOWLEDGEMENTS
- Modelling the blood flow in an aorta; the MPTT and Modified MPTT models.
  - Abstract
  - 1 INTRODUCTION
  - 2 BLOOD
  - 3 PHAN-THIEN AND TANNER MODEL
  - 4 APPLICATION
  - 5 RESULTS
  - 6 CONCLUSIONS
- A novel technique for evaluation of articular cartilage lubrication based on the surface plasmon resonance
  - Abstract
  - 1 INTRODUCTION
  - 2 MATERIALS AND METHODS
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSION
Session XII: Coatings 2
- The Effect of Si Content and Substrate Bias on Structural and Tribological Properties of (Cr,Si)N Coatings under Water Lubrication
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULT AND DISCUSSIONS
  - 4 SUMMARY
- Tribological characteristics of WC_1-x, W₂C and WC tungsten carbide films
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTS DETAILS
  - 3 RESULTS AND DISCUSSIONS
  - 4 SUMMARY AND CONCLUSIONS
  - ACKNOWLEDGMENTS
Session XIII: Lubricants 2
- Power Loss in FZG gears lubricated with industrial gear oils: Biodegradable Ester vs. Mineral oil
  - ABSTRACT
  - 1 INTRODUCTION
  - 2 LUBRICANTS
  - 3 GEAR SIMULATION TESTS
  - 4 GEAR POWER LOSS TESTS
  - 5 RESULTS AND DISCUSSION
  - 6 CONCLUSIONS
  - ACKNOWLEDGEMENT
- The effect of dissolved ions on tribological properties in water
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DETAILS
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSION
  - ACKNOWLEDGEMENTS
- Comparative Theoretical and Experimental Study of Linear and Star Polymer Additive Degradation in Kurt Orbahn Tests
  - 1 INTRODUCTION
  - 2 KINETIC EQUATION FOR STRESS-INDUCED DEGRADATION OF LUBRICANTS WITH LINEAR POLYMERIC ADDITIVES (VM)
  - 3 PROBABILITY OF SCISSION AND THE DENSITY OF CONDITIONAL PROBABILITY OF SCISSION
  - 4 MODELING OF FORMING STAR POLYMERIC MOLECULES FROM LINEAR POLYMERIC MOLECULES AND CORES
  - 5 DEPENDENCE OF LUBRICANT VISCOSITY ON DISTRIBUTION OF POLYMERIC MOLECULES
  - 6 APPROXIMATION OF THE INITIAL EXPERIMENTALLY OBTAINED DISTRIBUTION OF STAR POLYMERIC ADDITIVES
  - 7 SOME PROPERTIES OF THE KINETIC EQUATIONS, NUMERICAL RESULTS AND COMPARISON WITH TEST DATA
  - CONCLUSIONS
  - ACKNOWLEDGEMENT
Session XIV: Bio-degradability - Sustainability
- Sustainable Development Thinking in Tribology Design
  - Abstract
  - 1 INTRODUCTION
  - 2 SUSTAINABLE DEVELOPMENT THINKING IN ENGINEERING AND TRIBOLOGY DESIGN
  - 3 CASE STUDY: REFRIGERATOR DURABILITY
  - 4 CLOSING REMARKS
- Sliding experiments of steels in gaseous hydrogen
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENTS
- Ecological-friendly Oil Film on Water Fog Metalworking Fluid
  - Abstract
  - 1 INTRODUCTION
  - 2 CONCEPT OF OIL FILM ON WATER FOG METALWORKING FLUID
  - 3 MACHINING TESTS OF ALUMINUM ENDMILLING
  - 4 MACHINING ACCURACY
  - 5 MECHANISM OF CUTTING FORCE REDUCTION
  - 6 CONCLUSIONS
- Lubrication in Refrigeration Systems: Performance of Journal Bearings Lubricated with Oil and Refrigerant Mixtures
  - Abstract
  - 1 INTRODUCTION
  - 2 NOMENCLATURE
  - 3 MODEL DEVELOPMENT
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENTS
  - APPENDIX: Calculation of physical properties
Session XV: Machine Systems 1
- Modern Tribology in Life Cyele Assessment
  - Abstract
  - 1 INTRODUCTION
  - 2 TRIBOLOGY FOR REDUCING IMPACTS BY VEHICLES
  - 3 CHALLENGES OF TRIBOLOGY IN LCA
  - 4 MODERN TRIBO-TECHNOLOGY AND TRIBO-APPROACH IN LCA
  - 5 DISCUSSION
- An experimental study on the friction behaviour of aircraft hydraulic actuator elastomeric reciprocating seals
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL RIG ARRANGEMENT
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - 5 ACKNOWLEDGEMENTS
- Experimental Study on Gas Transportation in Radial Shaft Seals
  - Abstract
  - 1 INTRODUCTION
  - 2 TEST METHODS
  - 3 TEST RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
- Friction coefficient between gear teeth in mixed film lubrication
  - ABSTRACT
  - 1 INTRODUCTION
  - 2 MIXED FILM LUBRICATION MODEL
  - 3 LUBRICANT TRACTION CURVES
  - 4 FRICTION COEFFICIENT IN FZG GEARS
  - 5 NUMERICAL RESULTS
  - 6 DISCUSSION OF THE RESULTS
  - 7 CONCLUSION
  - ACKNOWLEDGEMENTS
  - NOMENCLATURE
Session XVI: Contact Mechanics, Wear and Failure
- Analytical Studies of Contact Problems for Fractal Surfaces
  - Abstract
  - 1 INTRODUCTION
  - 2 SURFACE ROUGHNESS AND FRACTALS
  - 3 THE MAJUMDAR-BHUSHAN MODEL
  - 4 THE B-M MODELS
  - 5 CONTACT FOR PH-PUNCHES
  - 6 CONTACT FOR PH-PUNCHES
  - 7 CONCLUSION
- A model of seizure based on Burwell and Strang's concept of wear mode transition
  - Abstract
  - 1 INTRODUCTION
  - 2 MODIFICATION OF BS MODEL
  - 3 A MODEL OF SEIZURE PROCESS
  - 4 DISCUSSION
  - 5 SUMMARY
  - 6 ACKNOWLEDGMENT
- An Asperity Based Model for Wear Rate in Mixed Lubrication
  - Abstract
  - 1 INTRODUCTION
  - 2 TOPOGRAPHIC MODEL
  - 3 EXPERIMENTAL RESULTS
  - 4 CONCLUSIONS
  - 5 ACKNOWLEDGEMENTS
  - 6 NOTATIONS
Session XVII: Automotive 1
- Lubricants & Energy Efficiency: Life-Cycle Analysis
  - Abstract
  - 1 INTRODUCTION
  - 2 FUEL ECONOMY ENGINE LUBRICANTS
  - 3 ENERGY EFFICIENT HYDRAULIC FLUIDS
  - 4 ENERGY EFFICIENT GEAR OILS
  - 5 LIFE-CYCLE COST ANALYSIS
  - 6 FUTURE OPTIONS
  - 7 CONCLUSIONS
  - 8 ACKNOWLEDGEMENTS
- Starved Hydrodynamic Lubrication of the Piston Ring Cylinder Liner Contact: Preliminary Study of the Influence of Surface Texturing
  - Abstract
  - 1 Introduction
  - 2 Nomenclature
  - 3 Geometrical Model
  - 4 Numerical solution
  - 5 Pure rolling conditions
  - 6 Pure sliding conditions
  - Conclusion
  - Acknowledgment
- A Model for Diesel Fuel Additive Lubricity
  - Abstract
  - 1 Introduction
  - 2 Wear Scar Laboratory Test Results.
  - 3 A Detailed Model for Diesel Fuel Additive Lubricity
  - 4 The Effect of Multiple Lubricity Additives
  - 5 Conclusion
  - 6 Further Work
- The Degradation of Lubricants in Gasoline Engines: Development of a Test Procedure to Evaluate Engine Oil Degradation and its Consequences for Rheology
  - Abstract
  - 1 INTRODUCTION
  - 2 THEORY
  - 3 EXPERIMENTAL WORK
  - 4 RESULTS
  - 5 DISCUSSION
  - 6 CONCLUSIONS
  - APPENDIX 1
Session XVIII: Elastohydrodynamic Lubrication 2
- Surface contact and damage in micro-EHL
  - Abstract
  - 1 INTRODUCTION
  - 2 THEORY
  - 3 RESULTS
  - 4 DISCUSSION AND CONCLUSIONS
  - 5 ACKNOWLEDGEMENTS
  - 6 NOTATION
- The Transient Elastohydrodynamic Friction Analysis of Main Bearings
  - Abstract
  - 1 INTRODUCTION
  - 2 SOFTWARE TOOLS
  - 3 ENGINE TESTS
  - 4 RESULTS
  - 5 CONCLUSIONS
  - 6 NOTATION
- Numerical analysis of the thermal micro-EHL problem of point contact with a single surface bump
  - ABSTRACT
  - NOMENCLATURE
  - 1 Introduction
  - 2 Basic equations
  - 3 Numerical procedure
  - 4 Results and discussion
  - 5 Conclusions
  - Acknowledgement
- Roughness Amplitude Reduction under Non-Newtonian EHD Lubrication Conditions
  - Abstract
  - 1 Introduction
  - 2 Theoretical background
  - 3 Numerical solution
  - 4 Numerical results
  - 5 Conclusion
  - 6 Recommendations
Session XIX: Coatings 3
- Sliding wear of oxygen diffusion hardened Ti-6A1–4V in physiological saline
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
- Hard coatings durability under fretting wear
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTS
  - 3 MATERIALS
  - 4 FRICTION ENERGY CAPACITY APPROACH
  - 5 HARD COATINGS DURABILITY CRITERION
  - 6 CONCLUSIONS
- The effect of the crystallographic orientation of Ag thin films on their tribologieal performance
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULTS AND DISCUSSIONS
  - 4 SUMMARY
  - ACKNOWLEDGEMENTS
- The Effect of Sliding History on the Steady State Friction Coefficient between CN_X Coatings under N₂ Lubrication
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULTS AND DISCUSSIONS
  - 4 CONCLUSIONS
  - ACKNOWLEDGEMENTS
Session XX: Wear and Debris Effects
- The Life Cycle of a Debris Particle
  - Abstract
  - 1 INTRODUCTION
  - 2 PARTICLE GENERATION
  - 3 ENTRAINMENT INTO MACHINE ELEMENT CONTACTS
  - 4 PARTICLE BEHAVIOUR
  - 5 SURFACE DAMAGE
  - 6 ROLLING CONTACT FATIGUE
  - 7 WEAR BY DEBRIS PARTICLES
  - 8 CONCLUSION
- Experimental investigations of Rolling Contact Fatigue of dented surfaces using artificial defects
  - Abstract
  - 1 INTRODUCTION
  - 2 FATIGUE LIFE CONSIDERATION
  - 3 EXPERIMENTAL PROCEDURE
  - 4 TESTS RESULTS UNDER PURE ROLLING CONDITION
  - 5 TEST RESULTS UNDER ROLLING SLIDING CONDITIONS
  - 6 CONCLUSION
  - 7 ACKNOWLEDGMENTS
- Stability, Wear, and Corrosion Characteristics of Rapidly Solidified High Temperature AI-8Fe-4Ce Alloy
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL PROCEDURE
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
- Predicting the growth of RCF crack with the use of the 3D multi size finite element model.
  - Abstract
  - 1 INTRODUCTION
  - 2 MODELLING
  - 3 CRACK GROWTH
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGMENTS
Session XXI: Bearings
- Integrated Tribological Analysis within a Multi- physics Approach to System Dynamics
  - Abstract
  - 1 NOMENCLATURE
  - 2 INTRODUCTION
  - 3 PISTON-CONNECTING ROD-CRANK SYSTEM
  - 4 VALVE TRAIN SYSTEM
  - 5 CONCLUDING REMARKS
  - ACKNOWLEDGMENTS
- Tribological performance of selected bearings and bearing materials used for nanopositioning
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DETAILS
  - 3 RESULTS
  - 4 DISCUSSIONS
  - 5 CONCLUSIONS
  - ACKNOWLEDGMENTS
- Influence of Manufacturing Error of Roundness for Characteristics of Cylindrical Journal Bearing
  - Abstract
  - 1 INTRODUCTION
  - 2 NOTATION
  - 3 ANALYSIS
  - 4 RESULTS AND DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENTS
Session XXII: Automative 2
- Additive/additive interactions in boundary lubrication — a study of film formation and tenacity
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DESIGN
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENTS
- Fundamental Study of Changes in Friction and Wear Characteristics due to ZnDTP Deterioration in Simulating Engine Oil Degradation during Use (Part 2) -- Influences of the Presence of Peroxide and Dispersed Zn-containing Solids--
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - ACKNOWLEDGEMENTS
- The Degradation of Lubricants in Gasoline Engines: Lubricant Flow and Degradation in the Piston Assembly
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL
  - 3 RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENTS
Session XXIII: Machine Systems 2
- Seizure Tests to Select Materials for Cylinder Blocks and Valve Plates in Water Hydraulic Pumps
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMANTAL PROCIEDURES
  - 3 EXPERIMANTAL RESULTS
  - 4 DISCUSSION
  - 5 CONCLUSIONS
  - ACKNOWLEDGMENT
- A reduced-scale testing machine for tribological evaluation of brake materials
  - Abstract
  - 1 INTRODUCTION
  - 2 REDUCED-SCALE DESIGN
  - 3 EXPERIMENTAL
  - 5 CONCLUSIONS
- Experimental-Numerical Friction Factor Determination
  - Abstract
  - 1 Introduction
  - 2 Theoretical Assumptions
  - 3 Experimental Research
  - 4 Numerical Simulation
  - 5 Result Analysis
  - 6 Conclusion
Session XXIV: Nanotribology 2
- Effects of Ultra-Violet Irradiation on Conformation and Spreading Characteristics of Molecularly Thin Lubricant Films
  - Abstract
  - 1 INTRODUCTION
  - 2 EXPERIMENTAL DISK AND LUBRICANT
  - 3 IRRADIATION OF ULTRAVIOLET RAYS
  - 4 EFFECT OF UV IRRADIATION ON CONFORMATION OF LUBRICANT FILM
  - 5 EFFECT OF UV IRRADIATION ON SPREADING CHARACTERISTICS OF LUBRICANT FILM
  - 6 SUMMARY
  - Acknowledgement
- Friction and wear life evaluation of silane based self assembled monolayers on silicon surface
  - Abstract
  - 1 INTRODUCTION
  - 2 Experimental
  - 3 RESULTS AND DISCUSSION
  - 4 DEPOSITIONAL CHARACTERISTICS
  - 5 CONCLUSIONS
  - ACKNOWLEDGEMENT
- Basic Observations of Tribological Phenomena by Neutron Scattering Methods
  - Abstract
  - 1 INTRODUCTION
  - 2 BASIC CHARACTERISTICS OF A NEUTRON BEAM
  - 3 SURFACE PROFILES AT METAL-METAL INTERFACE
  - 4 THICKNESS OF ULTRA-THIN OIL FILM AT METAL-METAL INTERFACE
  - 5 MICROSCOPIC STRUCTURES OF BASIC LUBRICANTS
  - 6 CONCLUSIONS
  - ACKNOWLEDGEMENTS
Session XXV: Bio-tribology 3
- The Importance of Protein Physisorption in BioMEMS/NEMS Applications: A Nanotribological Study
  - Abstract
  - 1 NOTATION
  - 2 INTRODUCTION
  - 3 EXPERIMENTAL METHODS
  - 4 RESULTS
  - 5 DISCUSSION
  - 6 CONCLUSIONS
  - 7 ACKNOWLEDGEMENTS
- Metal-metal cervical disc implants: A material investigation using pin-on-plate tests
  - Abstract
  - 1 INTRODUCTION
  - 2 MATERIALS AND METHODS
  - 3 RESULTS AND DISCUSSION
  - 4 CONCLUSIONS
  - 5 FUTURE WORK
  - 6 ACKNOWLEDGEMENTS
  - A APPENDIX
Written Discussion
- Written Discussion - Contributions: Discussion
List of Delegates
- 31st Leeds-Lyon Symposium on Tribology Trinity and All Saints College, Leeds, Tuesday 7th - Friday 10th September 2004 “Life Cycle Tribology”

Life Sciences

Physical Sciences & Engineering

Social Sciences & Humanities

Health

Life Cycle Tribology

31st Leeds-Lyon Tribology Symposium

Fuel your confidence!

Duncan Dowson

G. Dalmaz

A A Lubrecht

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