期刊
INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS
卷 121, 期 1, 页码 255-265出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpe.2009.05.008
关键词
Inventory; Imperfect quality; Inspection error; Defect return; Rework and salvage
In practices, not only production but inspection processes are often not perfect, thereby generating defects and inspection errors. Previous imperfect-quality inventory studies, however, have mostly focused on developing cost-minimizing models that do not consider imperfect inspection processes and related defect sales return issues despite their practical significance. Thus, this study proposes a profit-maximizing economic production quantity model that incorporates both imperfect production quality and two-way imperfect inspection, i.e., Type I inspection error of falsely screening out a proportion of non-defects and disposing of them like defects and Type II inspection error of falsely not screening out a proportion of defects, thereby passing them oil to customers, resulting in defect sales returns. We also consider rework and salvage in disposing of screened and returned items. Then we solve the model optimally and present numerical sensitivity analyses to provide important managerial insights into practices. (C) 2009 Elsevier B.V. All rights reserved.
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