Volume : 1, Issue : 1, June - 2012

Implementation of Digital Logic Method for Selection of Material of Automotive Brake Disc

Mr. Keval J. Patel, Tushar M. Patel, Ankit A. Darji

Abstract :

An automotive ake disc or rotor is a device for slowing or stopping the motion of a wheel while it runs at a certain speed. The widely used ake rotor material is cast iron which consumes much fuel due to its high specific gravity. The aim of this paper is to develop the material selection method and select the optimum material for the application of ake disc system emphasizing on the substitution of this cast iron by any other lightweight material. Two methods are introduced for the selection of materials, such as cost per unit property and digital logic methods. Material performance requirements were analyzed and alternative solutions were evaluated among cast iron, aluminium alloy, titanium alloy, ceramics and composites. Mechanical properties including compressive strength, friction coefficient, wear resistance, thermal conductivity and specific gravity as well as cost, were used as the key parameters in the material selection stages. The analysis led to aluminium metal matrix composite as the most appropriate material for ake disc system. Index Terms— Brake disc; Material selection; Cost per unit strength method; Digital logic method.