Wear in mechanical systems is undesired stochastic process which is a consequence of another stochastic process - friction.
In the majority of mechanical systems friction is an unwanted side effect of other main operating processes. However, since it enables kinetic energy reduction i.e. vehicle deceleration, or power transmission, high friction is appreciated in automotive friction mechanisms [...]

Coefficient of Friction - A number measuring the “grip” of a material used in brake pads.
Coefficient of friction can vary depending on the type of material used for the brake rotor. Typically service brakes are concerned with dynamic coefficient of friction, or the coefficient of friction measured while the vehicle is moving. Below are [...]