Quantum mechanics

Dry friction

Engineering

Transient (computer programming)

Metallurgy

Materials science

Surface finish

Operating system

Computer science

Surface roughness

Mechanical engineering

Physics

Nonlinear system

Service life

Composite material

Tribology

Mechanics

Forensic engineering

Coefficient of friction

Friction coefficient

Tribology International

When pristine solid surfaces experience sliding contact, the surface roughness undergoes various changes and deformations in a transient fashion giving rise to a nonlinear wear rate. During the first stage of the service life of the mechanical elements called running-in, this phenomenon occurs where many intertwined parameters interact in a complicated fashion. It is believed that the operating conditions of running-in largely impact the performance of a tribo-system. Thus, the ability to predict the variation of wear rate, friction coefficient, and surface asperities during running-in is important. To address this need, a model capable of predicting the variation of the aforementioned parameters is developed. To verify the predictions, the results are compared to pin-on-disk experiments. The comparison shows an acceptable agreement in the predicted and experimental data.

Experimentally verified prediction of friction coefficient and wear rate during running-in dry contact