A Novel Approach for Mission Reliability Modeling of Manufacturing System Based on the State Change of Machines and Materials

Traditional reliability modeling for manufacturing systems often pays too much attention to the basic reliability of their components, which ignores the dynamic polymorphism characteristics of the multi-station manufacturing system. To resolve this dilemma, a novel mission reliability modeling approach of manufacturing systems is proposed at the first. This method regards the dynamic state change of machines and materials in the manufacturing process as the focus, and integrated three indicators of task demands, machine processing capacity and the qualified rate of machine in manufacturing process respectively. Then, a decomposition method is proposed for describing the change of the number of materials in each state. Subsequently, the specific process of mission reliability modeling for a multi-station manufacturing system with reworking action is described. Finally, a case study of piston ring manufacturing system has been used to validate the proposed approach.