Assessment of tribological behaviour of laser textured brake disc/composite brake pad system using adaptive neuro fuzzy interference system technique

Abstract

This paper examines the impact of Laser Surface Texturing (LST) on the tribological performance of a commercial automotive brake system consisting of a metallic brake disc and composite brake pads. The study focuses on achieving an optimal combination of wear and friction, aligning with the goals of green technology. The Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methodology is used to rank the characteristics, while the Adaptive Neuro Fuzzy Interference System (ANFIS) methodology is employed to model the friction and wear behavior of the brake pad-disc system under varying normal loads and sliding speeds. At a normal load of 100 N and a sliding speed of 0.73 m s−1 under dry conditions, the brake system exhibited a minimum coefficient of friction of 0.2066 and a specific wear rate of 7.93 × 10−6 mm3 N−1-m−1. Although, there was no specific correlation found between frictional power and specific wear rate, a higher load of 100 N and sliding speed of 2.71 m s−1 resulted in decrease in specific wear rate by 83% when compared to that of untextured brake discs. By applying brake oil to the laser-textured boundary, the coefficient of friction experienced a 31% reduction.