ΜΚ14 | Special Topics in Tribology

Postgraduate Study Program | Design and Production

Introduction to Tribology. Friction. Laboratory: Measurement of surface friction and roughness. Introduction to wear. Wear mechanisms. Lubricants – lubrication. Semester project for students. Hydrodynamic lubrication Boundary lubrication. Contact mechanics. Hertz Theory. Contact of real surfaces. Greenwood-Williamson model. Model Greenwood-Tripp. Elasto- hydrodynamic lubrication. Line contacts. Point contacts. Determination of lubricant film thickness. Hamrock-Dowson and Chittenden-Dowson Relations. Mathematical Modeling. Non-Newtonian lubricants behavior. Thermal phenomena. Soft /hard elasto-hydrodynamic theory of lubrication. Investigation of the main lubrication area. Stribeck curve. Hamrock-Dowson diagrams. Design of low friction surfaces. Design of sliding bearings. Design of magnetic bearings. Design of smart (magnetorheological) bearings. Laboratory: friction measurement on sliding bearings. Design of piston rings in Internal combustion Engines. Progress in semester Project.  Laboratory: friction measurement in piston rings. Friction and temperature phenomena. Nano and Micro-Tribology. Final presentations and examination of semester Projects.