Review Paper 2: Basic Principles of Dry Friction Testing

Friction is the force resisting relative motion between surfaces in contact. The coefficient of friction is the ratio of the frictional force to the normal load. Consequently the measurement of friction involves measurement of a normal load, movement of a surface, and measurement of a tangential force.The first part of this review paper deals with the basic principles of the friction process. The second part is concerned with experimental methods of measuring the friction.

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