A study of heat capacity behavior of friction materials

Abstract

Nowadays, one of the automotive engineering is conductivity of brake pads playing a role in friction coefficient which means safety of customer. Thus thermal properties have been improved using composited materials. This project aims to study the heat capacity behavior of 3 different brake pads which are supported by the company, Compact International (1994) Ltd. For experimental works, temperature based on brake condition was simulated from 05 to 003°C at 5 MPa of pressure. By standard JIS D4413, testing condition of pressure was referred. The heat capacity values of brake pads are calculated under the temperature conditions. As a result of testing, brake pad made of copper or high metal powders result in relatively low heat capacity. On the other hand, brake pads containing fiber and a large amount of fillers result in an increased heat capacity and stability in various temperature conditions. The heat capacity varied according to the operating temperature. In addition, the lubricant contained in the brake pads affects the higher heat capacity and stability at various temperatures.