Author : Ganesh Chandane and Sham Kulkarni

Brake pad & disc are most important component of an automobile braking system. For smooth retardation of vehicle it converts kinetic energy into heat energy. Due to hard or repetitive braking in steep gradient COF & wear rate, effectiveness between brake pad and disc is decreases. In this work uncoated and Aluminum titanium nitride material coated disc are used. The impact of uncoated and coated disc surface on tribological behavior of braking system are investigated by using pin on disc machine under dry condition. The Aluminum Titanium Nitride (ALTIN) coating on disc done by physical vapor deposition (PVD) process. Low metallic & grey cast iron material considered for pin & disc. The input parameters considered for this test are load, sliding speed & time. Using Taguchi analysis the impact of each parameter are studied using L27 orthogonal array design. ANOVA is a statistical technique used to predict the process parameter and their interactions significantly affect the quality characteristics. The result showed that at minimum load and sliding velocity wear of friction material decreased. The COF & frictional force were stable at different load conditions.

Keywords: Aluminum Titanium Nitride (ALTIN), COF, ANOVA, PVD, Taguchi Analysis, Retardation, Sliding Velocity.