OBRABOTKAMETALLOV Vol. 27 No. 2 2025 technology where Vf is the final volume of the pin after the test; Vi is the initial volume of the pin before the test; d is the sliding distance. These equations allow evaluating the wear behavior of the materials under investigation and offer alternative options for brake friction materials. Results and Discussions Following extensive research on the selection of optimal components for the brake friction material compositions, two key combinations were selected for further testing and evaluation. The influence of these components on the wear behavior of composites was investigated using the pin-on-disk friction and wear testing method. Fig. 5 shows the main components of the brake friction composite 1 (BFC1), and fig. 6 shows the main components of the brake friction composite 2 (BFC2). Fig. 5. Major Ingredients of BFC1 Fig. 6. Major Ingredients of BFC2 To evaluate the performance characteristics of the developed composites, the test results of the coefficient of friction µ at various applied loads were used. The evaluation of brake friction composites was carried out at three different loads: 10, 50, and 100 N. Table 2 presents the test results of the average coefficient of friction µ for BFC1 and BFC2, and Table 3 presents the test results of the average weight loss (g) for BFC1 and BFC2. Ta b l e 2 Test Results for Average Coefficient of Friction of the BFC1 and BFC2 Composition Load (N) Н Mean Coefficient of Friction Average Coefficient of Friction µ BFC1 10 0.38 0.42 50 0.43 100 0.46 BFC2 10 0.44 0.48 50 0.47 100 0.52
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