Determination of the Effective Parameters for Estimating the Temperature Mode at Braking

A methodology for determining two parameters was proposed: the effective depth of heat penetration, and the thickness of the surface layer accumulating a given amount of heat. Explicit formulas allowing estimation of the values of these parameters for a semi-infinite body heated by heat flux with a variable time profile of intensity were obtained. Ten time profiles corresponding to different types of braking were analysed. The obtained results can be used at the design stage to determine the temperature mode and then to select materials for the friction elements of a disc braking system.