An Assessment of material selection Problem for piston in Automotive Engines Using the weighted sum model (original) (raw)

An motor cylinder's pistons are a critical part. The producers are compelled to investigate using the optimal piston alloy in the combustion chambers due to intense rivalry among them. The most common materials used to make pistons are "steel, iron, and aluminium". The challenge of choosing an appropriate element for a machine part used in a particular structural application is challenging since the engineers must take a variety of aspects into account. When selecting the best applicant fabric for a specific application, developers must take into account a variety of properties, including "mechanical, physical, magnetic, electrical, thermal and radiation, surface characteristics, machinability, material cost, reliability, durability, recyclability, impact on the environment, availability, fashion, market trends, cultural aspects, etc.". This selection procedure is laborious and time-consuming. " Elegance, sentiments, and userfriendly design" are now the primary factors in today's choice of materials. In this study, eight potential piston composites' effectiveness is assessed using eight criteria. The best composites among the resources under consideration were selected using the "WSM method (Weighted Sum Method)", a multi-criteria choice procedure because no one material would merely fulfil all the needed features. The ranks of “Aluminum 2618-T61 is 3, Aluminum 4032-T6is 5, Aluminum A360.0-F die casting alloy is 6, Aluminum 6061-T6 is 4, Grey cast iron is 7, AISI 8660 steel is 2, AISI 4140 steel is 1 and Ductile iron grade 65–45-12is 8”. The order preferred for materials is “AISI 4140 steel > AISI 8660 steel > Aluminum 2618-T61 > Aluminum 6061-T6 > Aluminum 4032-T6 > Aluminum A360.0-F die casting alloy > Grey cast iron > Ductile iron grade 65–45-12”. “AISI 4140 steel, AISI 8660 steel and Aluminum 2618-T61” were discovered to be the best materials among the selected alternate materials, as per the Weighted Sum Method (WSM) technique. The people who make decisions' desire for choosing the best conveyor was significantly influenced by " high hardness, fatigue strength and modulus of elasticity, and low material cost of materials."