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Symposium on lubricant properties in thin lubricating films
a form which industry can use. This message was met with nods of approval from the delegates, and all the contributors to the discussion agreed. References were repeatedly made to 'building a bridge between fundamental research and industrial applications'. The content of the technical papers, however, was generally in a form which many engineer's would find unintelligable and the majority would be unable to relate to industrial practice. it is unfortunate that ten years of tribology should be celebrated by a conference which vividly illustrated the chasm between research and a p plications. The next Tribology Convention organised by the institution of Mechanical Engineers will be held in 1978, possibly in Swansea. It is hoped that by then there will be some evidence that the bridge is under construction.
Papers presented Neale, M. J. Tribology, Past and Future Parker, R. C. The Contribution of Research in Tribology
New York. April 4 - 9 1976
Symposium on Lubricant Properties in Thin Lubricating Films The Symposium on Lubricant Properties in Thin Lubricating Films composed a small part of what was perhaps the largest gathering of chemists in the history of North America of the American Chemical Society's Centennial Meeting. The symposium was one session. Eight papers were presented to an international audience of about 30 delegates, a comparatively large number under the circumstances.
Factors affecting lubrication The papers by Briscoe and Tabor reviewed the factors which influence the shear behaviour of solid organic films in concentrated sliding contacts. Lamb described the viscoelastic response of liquids under conditions which approximate to those suffered by fluids in lubricated contacts. Hirst and Moore presented their recent studies on elastohydrodynamic lubrication and interpreted their data in terms of an Eyring model for viscous flow. A second paper on elastohydrodynamic lubrication by Kauzlarich,
Summers-Smith, J. D. Ten Years After Jost - The Effect on Industry Dowson, D., Smith: E. H., and Taylor, C. M. A New Model for the Rupture of the Lubricating Film in Finite Width Plain Bearings Moss, E. A., and Skews, B. W. A Solution to Reynolds Equation as Applied to Jour nal Bearings by Reduction to an Ordinary Differential Equation Marsh, H., and Whittingham, M. J. The Effect of Axial Reynolds Number on the Performance of an Air Bearing O'Brien, K. T., and Mobbs, F. R. Superlaminar Flows in Journal Bearing Models Gu, A. On the Drift of Hydrostatic Spherical Gas Gyro Bearings Marsh, H. The Design of Externally Pressurized Gas Bearings for Minimum Total Power Parsons, B., and Taylor, C. M. The Determination of Load Distribution in a Roller Bearing with a Non-Circular Outer Ring using Finite Element Techniques Radcliffe, S. J. The Fatigue Performance of Grease Lubricated Ball Bearings in High Pressure Carbon Dioxide Bartz, W. J. Selection of Lubricants for Gears. Introduction to Standard DIN 51 509. Thomas, T. R. and Sayles, R. S. The Application of Measurements of Surface Roughness to Tribological Problems
Burton, R. A., Banerjee, B., Heekmann, S., and Kilaparti, R. The Influence of Thermoelastic Instabilities on The Design and Performance of Seals Amuzu, J.:K. A., Briscoe, B. J., and Tabor, D. Polymers as Bearings and Lubricants: Aspects of Fundamental Research Black, H. F., and Brown, R. D. Fast Dynamic Calculations for Non-Circular Bearings Earles, S. W. E., and Wu, C. L. S. A Clearance Impact Magnitude Relationship for Plain Bearings in Oscillatory Systems Remmers, G. Grease-Lubricated SpiralGroove Bearings of Plastic: Full-Film Lubrication for Consumer Products Murry, A. Cutting Fluid Evaluation by Submerged Machining Test Gray, M. J., and Skelton, W. J. The Lubrication and Wear of Small Reciprocating Lip Clearance Seals for High Pressure Applications Wilson, W. H. Designing with NonLubricants Roylance, B. J. The Application of Existing Knowledge to the Solution of Industries' Tribological Problems
The proceedings of the conference will be published by Mechanical Engineering Publications, PO Box 23, Bury St Edmunds, Suffolk 1P32 6BW, UK
Jamison, and Mochel dealt wit h thermal corrections to the isothermal theory. Laurer and Peterkin outlined preliminary work on the analysis of infrared emission spectra of elastohydrodynamic films. Their method is a novel one and when it is fully developed may provide an insight into the temperature profile in lubricated contacts. The paper by Sanborn and Winer reviewed their work on shear induced degradation of oils and additives in elastohydrodynamic contacts.
importance of time effects in behaviour of rapidly compressed fluids and shear degradation of lubricating oils.
B. ,1. Briscoo
Papers presented* Briscoe, B. J. and Tabor, D. Shear properties of thin organic films Lamb, J. Experimental viscoelastic measurements for liquids, and their correlation Hirst, W. and Moore, A. J. Non-Newtonian behaviour in the elastohydrodynamic lubrication of rollers Kauzlarich, J. J., Jamison, W. E., and Mochel, E.V. Elastohydrodynamic film thickness and temperature
Theory Two final papers dealt mainly with theoretical aspects. Wang and Cheng considered the importance of viscoelastic retardation in compression as a factor governing elastohydrodynamic film thickness. Prakash and Christensen presented a new approach to account for theological anomalies in thin hydrodynamic f'rims. Their model was based on the 'micropolar fluid theory' in which the behaviour of the fluid is described in terms intermediate between molecular and c o n t i n u u m approaches. All the papers invoked free discussion, with much time spent considering the
Laurer, J. L. and Peterkin, M. E. Analysis of infrared emission spectra of elastohydrodynamic lubricant films Sanborn, D. M. and Winer, W. O. Lubricant properties in elastohydrodynamic Films Wang, K. L. and Cheng, H. S. Transient effect of lubricant on elastohydrodynamic film thickness Prakash, J. and Christensen, H. Rheological anomalies in thin hydrodynamic films
Preprints of the papers have been published by the Division o f Petroleum Chemistry, American Chemical Society, 1155 16th Street, NW Washington DC 20036, USA
TRIBOLOGY international June 1976 143
Papers presented Neale, M. J. Tribology, Past and Future Parker, R. C. The Contribution of Research in Tribology
New York. April 4 - 9 1976
Symposium on Lubricant Properties in Thin Lubricating Films The Symposium on Lubricant Properties in Thin Lubricating Films composed a small part of what was perhaps the largest gathering of chemists in the history of North America of the American Chemical Society's Centennial Meeting. The symposium was one session. Eight papers were presented to an international audience of about 30 delegates, a comparatively large number under the circumstances.
Factors affecting lubrication The papers by Briscoe and Tabor reviewed the factors which influence the shear behaviour of solid organic films in concentrated sliding contacts. Lamb described the viscoelastic response of liquids under conditions which approximate to those suffered by fluids in lubricated contacts. Hirst and Moore presented their recent studies on elastohydrodynamic lubrication and interpreted their data in terms of an Eyring model for viscous flow. A second paper on elastohydrodynamic lubrication by Kauzlarich,
Summers-Smith, J. D. Ten Years After Jost - The Effect on Industry Dowson, D., Smith: E. H., and Taylor, C. M. A New Model for the Rupture of the Lubricating Film in Finite Width Plain Bearings Moss, E. A., and Skews, B. W. A Solution to Reynolds Equation as Applied to Jour nal Bearings by Reduction to an Ordinary Differential Equation Marsh, H., and Whittingham, M. J. The Effect of Axial Reynolds Number on the Performance of an Air Bearing O'Brien, K. T., and Mobbs, F. R. Superlaminar Flows in Journal Bearing Models Gu, A. On the Drift of Hydrostatic Spherical Gas Gyro Bearings Marsh, H. The Design of Externally Pressurized Gas Bearings for Minimum Total Power Parsons, B., and Taylor, C. M. The Determination of Load Distribution in a Roller Bearing with a Non-Circular Outer Ring using Finite Element Techniques Radcliffe, S. J. The Fatigue Performance of Grease Lubricated Ball Bearings in High Pressure Carbon Dioxide Bartz, W. J. Selection of Lubricants for Gears. Introduction to Standard DIN 51 509. Thomas, T. R. and Sayles, R. S. The Application of Measurements of Surface Roughness to Tribological Problems
Burton, R. A., Banerjee, B., Heekmann, S., and Kilaparti, R. The Influence of Thermoelastic Instabilities on The Design and Performance of Seals Amuzu, J.:K. A., Briscoe, B. J., and Tabor, D. Polymers as Bearings and Lubricants: Aspects of Fundamental Research Black, H. F., and Brown, R. D. Fast Dynamic Calculations for Non-Circular Bearings Earles, S. W. E., and Wu, C. L. S. A Clearance Impact Magnitude Relationship for Plain Bearings in Oscillatory Systems Remmers, G. Grease-Lubricated SpiralGroove Bearings of Plastic: Full-Film Lubrication for Consumer Products Murry, A. Cutting Fluid Evaluation by Submerged Machining Test Gray, M. J., and Skelton, W. J. The Lubrication and Wear of Small Reciprocating Lip Clearance Seals for High Pressure Applications Wilson, W. H. Designing with NonLubricants Roylance, B. J. The Application of Existing Knowledge to the Solution of Industries' Tribological Problems
The proceedings of the conference will be published by Mechanical Engineering Publications, PO Box 23, Bury St Edmunds, Suffolk 1P32 6BW, UK
Jamison, and Mochel dealt wit h thermal corrections to the isothermal theory. Laurer and Peterkin outlined preliminary work on the analysis of infrared emission spectra of elastohydrodynamic films. Their method is a novel one and when it is fully developed may provide an insight into the temperature profile in lubricated contacts. The paper by Sanborn and Winer reviewed their work on shear induced degradation of oils and additives in elastohydrodynamic contacts.
importance of time effects in behaviour of rapidly compressed fluids and shear degradation of lubricating oils.
B. ,1. Briscoo
Papers presented* Briscoe, B. J. and Tabor, D. Shear properties of thin organic films Lamb, J. Experimental viscoelastic measurements for liquids, and their correlation Hirst, W. and Moore, A. J. Non-Newtonian behaviour in the elastohydrodynamic lubrication of rollers Kauzlarich, J. J., Jamison, W. E., and Mochel, E.V. Elastohydrodynamic film thickness and temperature
Theory Two final papers dealt mainly with theoretical aspects. Wang and Cheng considered the importance of viscoelastic retardation in compression as a factor governing elastohydrodynamic film thickness. Prakash and Christensen presented a new approach to account for theological anomalies in thin hydrodynamic f'rims. Their model was based on the 'micropolar fluid theory' in which the behaviour of the fluid is described in terms intermediate between molecular and c o n t i n u u m approaches. All the papers invoked free discussion, with much time spent considering the
Laurer, J. L. and Peterkin, M. E. Analysis of infrared emission spectra of elastohydrodynamic lubricant films Sanborn, D. M. and Winer, W. O. Lubricant properties in elastohydrodynamic Films Wang, K. L. and Cheng, H. S. Transient effect of lubricant on elastohydrodynamic film thickness Prakash, J. and Christensen, H. Rheological anomalies in thin hydrodynamic films
Preprints of the papers have been published by the Division o f Petroleum Chemistry, American Chemical Society, 1155 16th Street, NW Washington DC 20036, USA
TRIBOLOGY international June 1976 143