A two-layer criteria evaluation approach for re-scheduling efficiently semi-automated assembly lines with high number of rush orders

摘要

Rush orders are common events in enterprises that are utilizing make-to-order production strategy. They have multiple negative impacts to the production system such as higher product defect rate which corresponds to product quality drop, not meeting the due dates and cause customers’ dissatisfaction, higher production costs, waste of materials and energy. This research work studies the problem of rescheduling semi-automated assembly lines in the era of Zero Defect Manufacturing and in the face of real time events such as rush orders. This is achieved by adding to the adopted dynamic scheduling tool an extra criteria evaluation layer which is incorporating to the measured criteria the importance of each individual order. The proposed approach is validated through a real life industrial case in the semiconductor domain. The simulation results showed that incorporating the orders importance every time re-scheduling is needed can produce better schedules by 5.615%.? 2020 The Authors, Published by Elsevier B.V.Peer review under the responsibility of the scientific committee of CIRP.