frictional energy dissipation

How do phonons lead to frictional energy dissipation?

18.12.2019 tribonet 793 Views

Friction is often associated with the generation of vibrations in the solids that are sliding over each other. Mathematically, these vibrations are described by the phonons in the two solids, the vibrational eigenmodes. Here, we […]

Hard, but highly elastic form of carbon developed

14.06.2017 1,368 Views
Washington, DC— A team including several Carnegie scientists has developed a form of ultrastrong, lightweight carbon that is also elastic and electrically conductive. A material with such a unique combination of properties could serve a [...]
Examining Wear on the Teeth of Herbivores

09.03.2020 498 Views
Individuals who deal with the health of animals on a regular basis are keenly interested in understanding the wear processes that affect the teeth of herbivores. Understanding these wear processes will potentially lead to the [...]
High-speed camera shows incoming particles cause damage by briefly melting surfaces as they strike

24.01.2019 450 Views
Video of the impact of a 10-micrometer particle (coming in from the left) traveling at more than 1 km/sec shows clearly the splashing away of molten material from the surface at the moment of impact. [...]
Tribology at Work on the Strings

12.07.2017 1,679 Views
There’s something about the moan and wail of a good gut-bucket slide guitar riff that can grab you by the innards and not let go. Any tribologist worth his salt is likely to have another [...]
Triboelectricity - a big renewable energy source

12.12.2016 2,637 Views
Tribo-electric effect is an effect of electricity generation, when two dissimilar materials come into contact and electrons migrate from one to another. Most of us have observed the tribo-electric effect in their life when rubbed [...]