Braking-experimental study on the relationship between friction material type and brake disc temperature

Abstract

Purpose This study aims to clarify the relationship of friction material type and brake disc temperature through braking experiment. Design/methodology/approach The braking performances of resin materials (RM), semimetallic materials (SM) and copper-based powder metallurgy materials (PM) friction blocks mating with forged steel brake disc were examined based on TM-I-type reduced-scale inertial braking dynamometer. The brake disc surface temperature was recorded by infrared thermal camera during braking. Findings Experimental results indicate that the thermal wear resistance of three friction materials differs with mental content, resulting in the deviation of pad-disc system contact state during braking, thus forming different temperature distribution on the brake disc surface. The peak temperature on the disc face of RM (190°C) is 36.6% and 45.4% lower than that of PM (300°C) and SM (348°C) at 160 km/h. The maximum radial temperature deviation of PM (35°C) is approximately three times than that of RM (12°C) and 40% higher than that of SM (25°C) at 50 km/h, whereas the maximum temperature deviation of SM (97°C) is six times than that of RM (16°C) and 31% higher than that of PM (74°C) at 160 km/h. Originality/value The effect of friction material type on the disc surface temperature distribution is revealed, which provides a meaningful reference for the design of brake friction pairs and choice of brake pad materials.

Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

“…According to the divisional method in the section "Distribution of temperature gradient on the disc surface," the thermal energy gradient factor C for each zone can be calculated according to equation (10). thermal energy gradient factor C decreases from 0.094 to 0.085 and 0.055, and witnesses at the radius of 100, 95, and 90 mm respectively, where all are in the corresponding transition zone from the interior non-friction zone to friction zone.…”

“…3 On the micro-scale, the increase of temperature will lead to the change of material properties in the contact zone, which will affect the contact behavior between the asperity and the friction and wear process. 4 Therefore, extensive investigations have been conducted to clarify the factors that are relevant to the brake disc temperature field, such as brake disc material and structure, 5–8 brake pad material, 9–12 shape, 13–15 and arrangement pattern. 16–18 Results demonstrated that, the brake pad shape and arrangement pattern cause the difference of distribution of friction arc length and brake force, which affects significantly the thermal distribution on the disc.…”

Simulated and experimental study on the relationship between coefficient of friction and temperature of aluminum-based brake disc

“…Theoretically, the local contact state increases the concentration degree of brake force, leading to an increase in brake disc temperature, so the measured temperature is higher than the calculated temperatures at speeds of 60 and 80 km/h. Finally, in the experiment, the high-temperature wear debris left the rubbing interface and carried away partial heat energy, accounting for the decrease in the disc temperature (Chen et al , 2022). Unfortunately, wear is neglected in the simulation.…”

Finite Element Method analysis application in identifying the causes of brake disc failure

“…in relation to emissions released as a result of friction, in many drives around the world that actuate the braking system, including brake disc-pad friction devices brake. An example may be the works in which the authors [4,5,16,23,24] investigate the influence of various friction materials on the brake disc during operation. Included are papers [6] that cover the effects of other factors, such as moisture and corrosion, on friction functions and different brake disc materials.…”