About 25% of the energy consumed by mankind is lost in contact between moving surfaces. This figure shows that understanding the tribological phenomena of friction, lubrication and wear is necessary to meet the technological challenges of sustainable production and the reliability of consumer goods or energy frugality. At the crossroads of mechanics, physics and chemistry of materials, this course gives the principles and methods of surface engineering used in tribology to design complex interfaces in biological implants, mechanical assemblies of propulsion and power transmission or manufacturing processes.
Friction, lubrication, surface engineering, contact mechanics, materials science
I. The mechanics of static contacts: Contact between smooth and rough surfaces, Role of thin solid films and coatings II. Macroscopic laws of friction and wear: Static and kinetic friction, Physics of friction and wear III. Surfaces and lubricants: Adhesive contacts, Structure and properties of lubricants and additives IV. Thin film lubrication: Experimental and computational hydrodynamics, Elastohydrodynamic lubrication in high-pressure contacts V. Boundary lubrication: Control of friction and wear, Nanotribology and molecular lubrication
- To analyse an industrial problem in tribology and to propose a dignosis
- To characterize features of rough urfaces and liquid lubricants as they pertain to interface sliding.
- To suggest solutions for suitable applications based on improved materials selection, use of tribological coatings, improved desgin or lubrication.
- To apply the basic theories of friction, wear and lubrication to predictions about the tribological behavior of commonly encountered sliding interfaces.
Final mark = 2/3 Knowledge + 1/3 Know-how
Knowledge N1 = 100% final exam Know-how N2 = 100% continuous assessment