Analytical and Experimental Investigation on Wear Performance of Disc Brake Pad

Abstract

Automotive disc brake pads are subjected to different wear situations under variable operating conditions; industry needs to evolve the methodology to estimate wear rate of brake pads to address the issue of extreme brake fading. In the present investigation friction and wear behavior of different brake pads is tested on newly developed test rig under dry sliding conditions. The analytical model is proposed to simulate different operating conditions using Winkler differential and integral relation. The infrared thermal images at the interface of the brake pad and disc were obtained to analyze the temperature variations under different operating conditions. The results showed the correlation of the load (20 N-80 N) and speed (300 rpm-1100 rpm) with temperature at the interface between pad and disc varies from 97.80 C to 306.70 C, which is moderate rise. The coefficient of friction increases as load increases from 0.24 at 300 rpm, 20 N load and maximum value 0.64 at 1000 rpm, 60 N load. Temperature rise at higher load and speed having the major influence on changing the friction and wear behavior of pad friction material. There is a consistency between reported experimental observations and obtained values from the proposed the analytical model.

An Experimental Investigation of Wear Particles Emission and Noise Level from Smart Braking System

“…However, it does not mean that there has been no improvement 19) . There is a variety of knowledge gathered from laboratory experiments on the essence of squeal, not limited to vibration modes, the wear of brake parts 33) , but brake friction interactions as well. What's more, Analytical research has provided valuable insights into how friction design, structure, and brake part dynamics in basic disc brake frameworks contribute to squeal or instability.…”

“…The detailed investigations related to different types of gray cast iron such as gray iron grade 250, high-carbon grey iron, as well as titanium alloyed grey iron used in brake disc rotors were analyzed and compared to that of a compact graphite iron (CGI) 32) . A pin on disc apparatus was commonly used in a variety of brake pads, shoe, and rotor wear investigations [32][33][34][35] . Carbon ceramics discs are well substitute as they possess not only high-temperature resistance but also low wear.…”

“…The braking action takes place as a result of friction between two surfaces (disc and brake pads); consequently, wear between disc and brake pad takes place which may hamper the braking torque. To analyze this, recently, Kalhapure and Khairnar studied the wear analysis of disc brake 33) . What's more, Abdo et al successfully reduced the squeal effects from the disc brake system by using the FEM approach 40) .…”