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BOUNDARY AND MIXED LUBRICATION SCIENCE AND APPLICATIONS
D. Dowson, M. Priest, G. Dalmaz, A.A. Lubrecht
The objective of the 28th Leeds-Lyon Symposium on Tribology was to define current understanding of the science relating to boundary and mixed lubrication and to compare this with the needs of industry in terms of applications.
Major advances have been made in recent years in areas such as contact mechanics, wear, elastohydrodynamic lubrication incorporating surface texture, lubricant interactions with surfaces and the experimental interrogation of surface topography, surface films and lubricant film thickness. However, the needs of industry are equally intense with a seemingly relentless drive towards more compact, efficient and durable tribological systems.
Session Headings . Selected Papers . Keynote Address and Invited Paper . Wear in boundary or mixed lubrication regimes (K. Kato). Analytical modeling of mixed lubrication performance (H.S. Cheng). Boundary Lubrication 1 Advances in the modelling of boundary lubrication (J.A. Williams). Additive-surface interaction in boundary lubrication: a combinatorial approach (M. Eglin et al .). Boundary Lubrication 2 . Boundary lubrication: from simple fatty acids to synovial fluid (N.D. Spencer). Dynamic control of friction via surface structuring (M. Heuberger et al .). Mixed Lubrication . Effects of elastic deformation and temperature on a mixed film lubrication model (A.K. Tieu et al .). A model of mixed lubrication with capillary effects (J.L. Streator). Lubricants 1 . Effects of detergent on the chemistry of tribofilms from ZDDP: studied by X-ray absorption spectroscopy and XPS (Y. Wan et al .). Friction and wear in a conformal conjunction subjected to boundary lubrication with environmentally adapted oils (J. Ukonsaari, E. Kassfeldt). Lubricants 2 . Study of zinc dialkyldithiophosphate using electrochemical techniques (Xiaoyin Xu et al .). The film forming properties of Newtonian and polymer thickened non-Newtonian oils under low rolling contact pressures (C. Bovington, A. LaFountain). The mechanism of layer formation and the function of additives used in fully formulated engine crankcase oils (H. Kaleli, Y. Berthier). Nano-Boundary Lubrication and Molecular Dynamics . The physics of boundary lubrication at the head/disk interface (B. Marchon). Molecular dynamics simulations of the friction of n -alkane monolayers (P.T. Mikulski, J.A. Harrison). Coatings . Novel plasma-based coatings for piston rings (K.L. Dahm, P.A. Dearnley). Energy and conformation changes in the molecular structure nanoscale films on application of stress: a computational study (D.A. Morton-Blake, Y.M. Blake). Dry Wear . An abacus for predicting the rolling contact fatigue life reduction due to debris dents (S. Coulon et al .). Influence of environment on the size of the elemental wear debris of graphite (Ph. Stempflé et al .). Lubricated Wear . Third body processes and friction of solid lubricants studied by in-situ optical and Raman tribometry (I.L. Singer et al .). On the tribological character of boundary lubricated DLC coated components (S. Jacobson, S. Hogmark). Bio-Tribology- Total Replacement Hip Joints . Boundary lubrication and friction of polyethylene and polyamides under protein-containing solutions (M.R. Widmer et al .). Stop-dwell-start motion: a novel simulator protocol for the wear of metal-on-metal hip implants (G.E. Roter et al .). Elastohydrodynamic Lubrication . A comparative Newtonian and thermal EHL Analysis using physical lubricant properties (T. Kazama). Elastohydrodynamic response of transverse ground gear teeth (J. Tao et al .). Friction 1 . Surface indentation test (SIT) for friction prediction in mixed lubrication of coated sheets (A. Wihlborg et al .). Influences of bearing pitch diameter, roller length and roller diameter on the frictional torque of needle roller thrust bearing (T. Hatazawa et al .). Bearings . Powder lubricated bearing operation to PV of half a million (H. Heshmat, R.G. Kaur). Some aspects of power losses in high-speed hybrid bearings (R. Grigorescu, J.H. Giovanola). Friction 2 . Empirical equations to calculate friction and strains for the sliding cylinder plastic solution (M. Busquet, A.A. Torrance). Frictional dampers dynamic characterization-theory and experiments (M. Salehi, H. Heshmat). Mechanical Systems . Friction prediction of a cam/tappet interface using an EHL model with consideration of surface texture (Q. Zhou, S.H. Richardson). Demonstration of powder shear damping applied to plates (S.W. Pulitzer III et al .).