JKR, MD, and DMT models of adhesion

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These m-files calculate the adhesive parameters of the contact between 2 spheres based on the mechanical and geometrical properties of these 2 bodies and show the pressure distribution in such a contact.

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Researchers simulate wear of materials as they rub together

20.10.2017

Forty years ago, MIT emeritus professor of mechanical engineering Ernest Rabinowicz calculated that 6 percent of the annual U.S. gross domestic product was lost through mechanical wear. His assertion gained enough traction that it became [...]
Experimental measurement of adhesion and friction in mesoscopic graphite contacts

07.02.2016

Two-dimensional materials, such as graphite, expose an intriguing, but poorly understood low-friction behavior – superlubricity. Various aspects of superlubricity have been addressed by researchers, mostly based on theoretical considerations, however, accurate experimental measurements of adhesion [...]
Hard, but highly elastic form of carbon developed

14.06.2017

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 [...]
EHLA Protects Brake Discs

16.12.2019

Brake discs are traditionally made with gray cast iron with lamellar graphite phases. The advantages are discs with good thermal conductivity, high thermal capacity, made at a relatively low cost. The disadvantage is that as [...]
Decrease Friction with Hydrogen Ions

13.06.2016

Currently, a large portion of consumed energy is used to overcome friction. Design of low friction components is a primary goal in building a sustainable society. Superlubricity, the state of ultralow friction (<0.01), has already [...]