A Study of Scheduling and Availability Considering 2nd-Stage Setup Performed in Parallel with Pre-Stage Machining in a 2-Stage Flow Shop

Abstract

In this study, scheduling when the 2nd stage is setup is performed in parallel with pre-stage machining in a 2-stage flow shop is considered. The results revealed the following : 1) When 2nd-stage setup is performed in parallel with prestage machining in a 2-stage flow shop, the optimal scheduling searched that is proposed in this study, through a variation of Johnson's theory, provider better results than the schedule searched by Johnson's theory. 2) A procedure for the scheduling of a variation of Johnson's theory was developed. 3) Application of the availability with the variation in Johnson's theory was confirmed through numerical examples.