Effects of hot molding pressure on physical and mechanical properties of brake friction materials 2019-01-1443
Hot molding is one of the most important manufacturing processes of friction materials in automotive brake system because it has direct impact on physical and mechanical properties. Porosity and compressibility are significant properties for brake vibration which affect brake noise propensity during sliding. Therefore, the purpose of this work is to study the effects of hot molding conditions on porosity, compressibility, and vibration of friction materials. Molding pressure which is a crucial parameter was varied in the hot molding process. Density, Porosity, hardness, compressibility and frequency response were investigated and analyzed in relation to the manufacturing parameters. Furthermore, the correlation among porosity, compressibility and frequency response were performed in this research. Finally, the optimal hot molding conditions for improving the noise and vibration of friction materials will be analyzed by using statistical technique.