Optimum design based on fabricated natural fiber reinforced automotive brake friction composites using hybrid CRITIC-MEW approach

In this present study, the hybrid criteria importance through inter-criteria correlation (CRITIC) and multiplicative exponent weighting (MEW) optimization approach is applied to problem of selecting an optimal brake friction formulation that satisfies maximum performance requirements. Automotive composites containing 5, 10, 15, 20 weight percentages natural fibers (hemp, ramie, pineapple) were developed. These analyzed for tribological properties using a Chase testing machine following IS-2742 Part-4 standard. The results, such as friction-fade (%), coefficient, friction-recovery fluctuations, friction-variability, friction-stability, wear, are fixed attributes identify most suitable formulation. coefficient (0.548) friction-stability (0.93) remain highest 5 wt.% pineapple fiber composites. Whereas lowest wear (1.08 g) along with least (107.54%) was exhibited by hemp (121.56%) corresponding (0.501) ramie added composite. On other hand, composite display (22.12%) friction-variability (0.330) fluctuation (0.178). experimental results found be strongly composition-dependent without any pronounced trend. Consequently, it becomes difficult prioritize formulations choose best among set formulations. Therefore, multi-criteria decision-based called CRITIC-MEW applied; suggests preset criteria.