Sliding Wear and Friction Studies of Disc/Pad Materials

Paper #:
  • 2017-01-0461

Published:
  • 2017-03-28
Abstract:
Brake disc provides friction force with minimum weight loss on application of brake. The pad material only experiences more wear and friction. Disc and pad materials are selected to give a stable and high coefficient of friction (0.25-0.40). COF is directly proportional to braking force generated and inversely proportional to the stopping distance. Brake pad is mainly produced from asbestos materials. Asbestos is an excellent material for brake pad application.. Considering the environmental pollution and human health safety, the asbestos cannot be used and there is a need to find an alternate material. The aim of the study is to identify a new material for replacement of pad material in practice. In this study, wear, hardness and friction properties of E glass fibre with epoxy resin and cashew friction dust composite are studied and compared with brake pad material in practice. It was observed that the wear rate increases with increasing load and sliding velocities for all materials. The wear rate in E glass fibre epoxy composite and E glass fibre epoxy composite with cashew friction dust are considerably low when compared with asbestos and semi metallic material. Even at the highest load (10 kg), it does not wear heavily. It can be seen that the COF of E-Glass fibre epoxy composite with Cashew friction dust based material does not varies much. E glass fibre epoxy composite with cashew friction dust has a good potential for using it as pad material in automotive application.The friction coefficient and wear rate become stable when stable transfer films are formed on the composite. - Semi metallic had steel fibres, E glass fibre with cashew friction dust had Cu powder, hence has lower wear which provides the scope for using this as a greener and economical material for brake pad.
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