Abstract
Raw and milled fly ash, varying from 20 wt% to 35 wt%, were utilized exclusively for the fabrication of brake friction composites. The fabricated friction composites were tested for the friction and wear response under two sliding conditions i.e. 200 N, 3.3 m/s and 200 N, 5 m/s using wear and friction monitoring test setup. The optimal friction composite from the developed raw fly ash composite (RFC) and milled fly ash composite (MFC) specimens was obtained using Entropy-VIšekriterijumsko KOmpromisno Rangiranje (VIKOR) technique based on their performance evaluation criteria (PEC) such as coefficient of friction, stability coefficient, variability coefficient, friction fluctuation, specific wear rate and the interface disc-pin temperature. The weight of each PEC was determined by Entropy method which were used in the VIKOR technique to calculate the ranking of the friction composites at both the sliding conditions. The ranking results showed that the MFC-30 specimen satisfied all the PEC and ranked 1 at both the rigorous sliding conditions. Based on the optimization results, the composition of MFC-30 may be recommended for the development of brake pads.
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