en تخصصي Special پژوهشي Research Abstract In general redundancy allocation problems the redundancy strategy for each subsystem is predetermined. Tavakkoli- Moghaddam presented a series-parallel redundancy allocation problem with mixing components (RAPMC) in which the redundancy strategy can be chosen for individual subsystems. In this paper, we present a bi-objective redundancy allocation when the redundancy strategies for subsystems are considered as a variable of the problem. As the problem belongs to the NP-hard class problems, we will present a new approach for the non-dominated sorting genetic algorithm (NSGAII) and Memtic algorithm (MA) with each one to solve the multi-objective model. Keywords: Redundancy Allocation Problems, Series-Parallel Problems, Redundancy Strategies, Non Dominated Sorting Genetic Algorithms (NSGAII), Memtic Algorithms. 0 0 http://ijorlu.lahijan.iau.ir/browse.php?a_code=A-10-1-27&slc_lang=en&sid=1 M. EbrahimNezhad Moghadam Rashti M.Ebrahimnazhad@gmail.com 100319475328460095 100319475328460095 Yes B. M. Vishkaei 100319475328460096 100319475328460096 No R. Esmaeilpour 100319475328460097 100319475328460097 No