TOPSIS-Based Selection of Optimal Proportion Among Different Combinations of Hybrid AMCs

Abstract

In this modern world, composites are used in almost all fields due to their attractive mechanical and technological properties. They are believed to be fast replacing metal alloys thanks to their adaptability, flexibility, formability, and machinability. The present study deals with the comparative evaluation of mechanical properties between various aluminium alloy composites reinforced with boron carbide and rice husk ash at different proportions and their optimization through ranking of alternatives using TOPSIS. The composite specimens are fabricated by a liquid metallurgy technique called stir casting. The sample specimens are prepared by varying the percentage of reinforcements as per volume-based ratio with respect to the aluminium alloy Al 6061. The evaluation of mechanical properties indicates the improvement in tensile strength, hardness, impact energy, and corrosion resistance for different composite combinations compared to that of individual alloy. Finally, the best possible combination is identified among the given set of various proportions by optimization using TOPSIS.