Research on Tribological Features of Brake Friction Materials - Comparison of the Results Obtained with the Pin-On-Disc and Ball-Cratering Methods

Abstract

Brakes are one of the most important systems in each vehicle. For this reason, numerous studies are carried out in many scientific institutions that allow for better understanding of friction and wear phenomenon. Therefore, the correctness of the obtained results is of great importance. Hence, the choice of the research method is not without significance. In this paper, it was decided to check how the choice of the method will affect the quality of the obtained results. The chosen methods were Ball-cratering and Pin-on-disc. Six groups of samples taken from three different types of pads were tested. The pads were both brand new and used. The analysis of the results was performed using the chi-square concordance test. It was established that at the significance level of 0.95, the choice of the research method was not statistically significant. Both methods provide similar high-quality results.