Interrelation of production system design, quality and productivity in hybrid manufacturing environments

Abstract

This study concentrates on the impact of lower quality of returned products for remanufacturing on machines that are shared by new and remanufactured products. The hybrid manufacturing shop floor with two part types where machines can have two different quality states are analyzed. The 2M1B line which is the essential element of manufacturing systems analysis is modeled as a Discrete State Continuous Time Markov Chain. In order to perceive the behavior of the system, at first, a model has been developed and analyzed to evaluate the steady-state probabilities of a single machine of the hybrid production shop with quality and operational failures. Then by using the single machine model, extreme cases for 2M1B system are examined. A Model for finite buffer systems is constructed and an algebraic solution algorithm is developed for the finite buffer 2M1B model. Finally, results derived from numerical experimentation and sensitivity analysis are obtained, and comments on increasing quality and effective productivity are remarked.