Comparative analysis of different multi-criteria decision-making techniques for materials selection of filler reinforced thermoplastic composite

Material selection plays a significant role in the workability of a product which can be effectively implemented with the aid of multi-criteria decision-making (MCDM) techniques. In the present study, the rankings of alternatives as particulates filled thermoplastic composite materials was carried out by using MOORA, TOPSIS, and COPRAS for the desirable performance. The physical, mechanical and tribological properties were the defined criteria for the selection of alternatives. For weightage of the criteria, the analytic hierarchy process (AHP) was used. The consistency of the criteria weightage was verified through the consistency index and consistency ratio of 0.1104 and 0.0985, respectively and eigenvalue (λmax) of 5.4416. The ranking results were compared by using Spearman's rank correlation coefficient. Empirical findings suggested 70 wt. % of polypropylene, 15 wt. % of RHA and 15 wt. % of sand as the best compositions for polymeric composite material. The study validated the stability of the ranking results the MCDM techniques. The study will support the researcher and industrial managers in material selection of polymeric composites.