Multi-Objective System Design Optimization Considering Environmental Emissions

The well-known reliability optimization problem, the redundancy allocation problem (RAP) involves the simultaneous selection of system components and a design level configuration that can meet several design constraints in order to optimize the predefined objective function(s). The RAP has been predominantly solved as a single objective optimization problem with the reliability of the system to be maximized or system design cost to be minimized. When considered as a multiple objective reliability optimization problem, the system reliability is maximized and the cost and weight of the system are minimized. In this work, the RAP was formulated as a multiple objective optimization problem with the system reliability to be maximized and the cost and environmental carbon dioxide emissions to be minimized. A well-known Multi-objective Evolutionary Algorithm (MOEA) named Non-dominated Sorting Genetic Algorithm II (NSGA-II) was used to solve this multiple objective redundancy allocation problem (MORAP)