Production and Distribution Decisions for a Multi-product System with Component Commonality, Postponement Strategy and Quality Assurance Using a Two-machine Scheme

摘要

Coping with present-day's more demanding customer requests on variety, fast delivery, and quality, a growing number of corporations constantly redesign their production scheme and reorganize their supply chains. Motivated by the benefits gained from postponement policy in multi-item manufacturing systems and response to customer's actual needs, this study adopts a two-machine fabrication scheme to explore the optimal fabrication-delivery policy for a two-stage multi-item system with common part, postponement policy and product quality reassurance (including product screening, scrap and rework). In the first stage, machine one is utilized to fabricate common parts that shared by all finished products. Then, in stage two, a separate machine produces the finished items under a rotation cycle time order. With the help of mathematical modeling, optimization methods, and a numerical illustration, our proposed fabrication system is capable of not only deciding the best fabrication-delivery policy, but also demonstrating its beneficial choice in cost saving and cycle length reduction in comparison with the results from a system using single-machine scheme.