tuning friction | About Tribology

Tuning dry friction with micro-honeycomb patterns

11.01.2017 Dr. Aydar Akchurin 1,192 Views

Controlling friction is one of the top priorities for many tribologists. The friction in bearings has to be reduced to increase the energy efficiency of numerous devices, while friction in transmission systems has to be […]

The Mechanism of Glycerol Superlubricity

09.05.2016 1,053 Views

Glycerol is a highly viscous liquid, generating friction coefficient of 0.1 and up for bearing steels in boundary lubrication. In full film EHL, pure glycerol generates high friction as well and therefore is rarely used [...]
Some open problems in adhesion (of rough surfaces)

30.01.2018 684 Views

By M.Ciavarella, A. Papangelo. Politecnico di BARI, Italy. Adhesion for ‘‘soft’’ bodies shows instabilities like in the simple case of a single sinusoid even in the so called JKR regime (Johnson 1995) which leads to [...]
Tribology and the Human Evolution

12.08.2019 997 Views

Tribology, not a common household word, is the science of wear, friction, and lubrication, studying how interacting surfaces behave in relative motion. Tribology does not work in isolation but affects a multitude of other fields [...]
Adhesive wear model: particle by particle

23.07.2017 1,767 Views

10.07.17 – An EPFL study has deepened our understanding of the fine particles produced by adhesive wear. This breakthrough could lead to cost savings and environmental benefits. Adhesive wear occurs when two surfaces – such [...]
Improved bonding of low friction PTFE

07.11.2017 1,006 Views

The convenience of non-stick, Teflon-coated cookware is appreciated in kitchens worldwide, particularly by anyone doing the washing up. The chemical making up Teflon, polytetrafluoroethylene or PTFE, is one of the slipperiest materials known. Outside the [...]