Life Cycle Tribology

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.

Contenu

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

Life Cycle Engineering and Virtual Product Development - the Role of Tribology

Session II: Elastohydrodynamic Lubrication 1

The effect of roughness in EHL contacts

Complete numerical analysis for mixed boundary and thermal elastohydrodynamic lubrication in steady-state point contacts

The influence of slide-to-roll ratio on lubricant film thickness distribution in the vicinity of real roughness features passing through EHD point contact

Unsteady EHL: An inverse hydrodynamic formulation

Session III: Nanotribology 1

Some aspects of tribological behaviour at the micro-scale - with particular reference to MEMS and MMAs

Chain matching effects of base oils and additives in nanotribology of boundary films

Lubrication properties of AI2O3 nanoparticles in aqueous suspensions

Session IV: Lubricants 1

Electrostatic monitoring of the effects of carbon black on lubricated steel/steel sliding contacts

Evaluation of Ionic Liquids for the Application as Lubricants

Measurement method of physical properties of adsorbed layers

Effectiveness of boundary lubricant additives on some coated surfaces

Session V: Bio-Tribology 1

Life Cycle Aspects of Total Replacement Hip Joints

Evaluation of wear resistance of ultra-high molecular weight polyethylene for joint prostheses in the multi-directional pin-on-plate tester

The influences of lipid and protein concentration on wear of ultra-high molecular weight polyethylene

Wear process under concentrated contact in alumina/alumina hip joint

Session VI: Coatings 1

An In-Situ Tribotest Method Designed for Predicting Wear Life and Frictional Performance During the Aluminum Forming Process

Durability of perfluoropolyether nanolubricant film fixed on diamond-like carbon surfaces

Rolling and rolling-to-sliding contact behaviour of DLC coatings

Session VII: Transmissions

A Full Toroidal Traction Drive IVT for Automotive Volume Production

Effects of the Maximum Hertzian Pressure on the Maximum Traction Coefficient Under EHL Conditions

Structure and mechanical property of boundary lubricating film formed in belt-type CVT oil

Efficiency modelling in the full toroidal variator: Investigation into optimisation of EHL contact conditions to maximize contact efficiency.

Session VIII: Tribochemistry

Tribochemical approach toward mechanism for synergism of lubricant additives on antiwear and friction reducing properties

Tribochemistry of mono molecular additive films on metal surfaces, investigated by XPS and HFRR

Water-accelerated chemical reaction for producing gear teeth with high form accuracy and fine surface finish

Session IX: Condition Monitoring

Condition Monitoring as a Tool to Aid Compliance with ISO 14000

Evaluation of an Ultrasonic Method for Measurement of Oil Film Thickness in a Hydraulic Motor Piston Ring

Ultrasonic Reflection from Mixed Liquid-Solid Contacts and the Determination of Interface Stiffness

Session X: Rolling Contact Fatigue

Extended finite element method for numerical simulation of 3D fatigue crack growth

A mixed mode fatigue crack model with the coupled X-FEM/LATIN method. Application to rolling contact fatigue (RCF)

Study on Rolling Contact Fatigue in Hydrogen Atmosphere - Improvement of Rolling Contact Fatigue Life by Formation of Surface Film -

Rolling Contact Fatigue Life of Bearing Steel Rollers Lubricated with Low Viscosity Traction Oil

Session XI: Bio-Tribology 2

Diatom Biotribology

Friction of Contact Lenses: Silicone Hydrogel versus Conventional Hydrogel

Modelling the blood flow in an aorta; the MPTT and Modified MPTT models.

A novel technique for evaluation of articular cartilage lubrication based on the surface plasmon resonance

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

Tribological characteristics of WC1-x, W2C and WC tungsten carbide films

Session XIII: Lubricants 2

Power Loss in FZG gears lubricated with industrial gear oils: Biodegradable Ester vs. Mineral oil

The effect of dissolved ions on tribological properties in water

Comparative Theoretical and Experimental Study of Linear and Star Polymer Additive Degradation in Kurt Orbahn Tests

Session XIV: Bio-degradability - Sustainability

Sustainable Development Thinking in Tribology Design

Sliding experiments of steels in gaseous hydrogen

Ecological-friendly Oil Film on Water Fog Metalworking Fluid

Lubrication in Refrigeration Systems: Performance of Journal Bearings Lubricated with Oil and Refrigerant Mixtures

Session XV: Machine Systems 1

Modern Tribology in Life Cyele Assessment

An experimental study on the friction behaviour of aircraft hydraulic actuator elastomeric reciprocating seals

Experimental Study on Gas Transportation in Radial Shaft Seals

Friction coefficient between gear teeth in mixed film lubrication

Session XVI: Contact Mechanics, Wear and Failure

Analytical Studies of Contact Problems for Fractal Surfaces

A model of seizure based on Burwell and Strang's concept of wear mode transition

An Asperity Based Model for Wear Rate in Mixed Lubrication

Session XVII: Automotive 1

Lubricants & Energy Efficiency: Life-Cycle Analysis

Starved Hydrodynamic Lubrication of the Piston Ring Cylinder Liner Contact: Preliminary Study of the Influence of Surface Texturing

A Model for Diesel Fuel Additive Lubricity

The Degradation of Lubricants in Gasoline Engines: Development of a Test Procedure to Evaluate Engine Oil Degradation and its Consequences for Rheology

Session XVIII: Elastohydrodynamic Lubrication 2

Surface contact and damage in micro-EHL

The Transient Elastohydrodynamic Friction Analysis of Main Bearings

Numerical analysis of the thermal micro-EHL problem of point contact with a single surface bump

Roughness Amplitude Reduction under Non-Newtonian EHD Lubrication Conditions

Session XIX: Coatings 3

Sliding wear of oxygen diffusion hardened Ti-6A1-4V in physiological saline

Hard coatings durability under fretting wear

The effect of the crystallographic orientation of Ag thin films on their tribologieal performance

The Effect of Sliding History on the Steady State Friction Coefficient between CNX Coatings under N2 Lubrication

Session XX: Wear and Debris Effects

The Life Cycle of a Debris Particle

Experimental investigations of Rolling Contact Fatigue of dented surfaces using artificial defects

Stability, Wear, and Corrosion Characteristics of Rapidly Solidified High Temperature AI-8Fe-4Ce Alloy

Predicting the growth of RCF crack with the use of the 3D multi size finite element model.

Session XXI: Bearings

Integrated Tribo…