title: Optimizing bi-objective redundancy allocation problem with a mixed redundancy strategy.
abstract: Redundancy Allocation Problem (RAP) is a challenging subject which has attracted the attention of many authors. Generally, in the RAP there are two strategies for using the redundant components: active and standby. In this paper a new redundancy strategy, called mixed redundancy, is introduced and considered in a multi-objective optimization RAP. Results demonstrate that the new strategy increases the reliability value of the system considerably. This improvement can be very important for system designers, because the reliability of any systems with the structure of redundant components can be increased by changing the redundancy strategy, not by only adding redundant component. Moreover, this improvement dose not increases the cost and other known physical characteristics of the system.
authors.affiliation: Department of Industrial and Systems Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran. Electronic address: m.abouei@in.iut.ac.ir.
authors.forename: Mostafa
authors.initials: M
authors.lastname: Abouei Ardakan
authors.affiliation: Department of Industrial and Systems Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Zeinal Hamadani
authors.affiliation: Department of Industrial and Systems Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Alinaghian
keywords: Mixed redundancy strategy; Multi-objective reliability optimization; NSGA-II; Redundancy allocation problem