During braking, friction between the disc and pad converts kinetic energy to heat energy, suddenly increasing the disc's temperature. Upon cooling, residual thermal stresses remain. Plastic deformation occurs due to thermal expansion/contraction, and after repeated braking cycles, cracks may initiate on the disc surface, leading to failure. The thesis uses finite element analysis to obtain the temperature profile and stresses in the disc under repeated braking to establish a basis for predicting low cycle fatigue life based on plastic strain amplitude.