리퍼비싱을 고려한 불완전 품질 재고모형

This study introduces an imperfect-quality inventory model, involving both the manufacturing and refurbishing processes. The manufacturing process is not only responsible for production, but also for the first-market sales of new items, while the refurbishing process deals with the refurbishment of defective items and the second-market sales of such refurbished items. The manufacturing process is imperfect in practice, and hence yields defective items, which we assume to follow a binomial probability distribution. The defective items can be disposed by either being refurbished or scrapped. The amount of defects to be refurbished for second-market sales is determined by consumer purchase patterns comparing sales prices between new and refurbished items. We introduce a comprehensive inventory-refurbishing model which jointly determines the optimal production size, refurbishment lot size, and the sales price of the refurbished item. We reveal that the refurbishment of defective items can be an effective disposal option to enhance the overall profit performance, while providing practical guidelines for the effective management of both the manufacturing and refurbishing processes. We also provide important managerial insights on supply chain practices of whether and how refurbishment can enhance overall profitability and when it needs to be facilitated.