کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6894673 | 1445928 | 2018 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Markov-modulated analysis of a spare parts system with random lead times and disruption risks
ترجمه فارسی عنوان
تجزیه و تحلیل مارکف مدولاسیون یک سیستم قطعات یدکی با زمان سرعتی تصادفی و خطرات ناشی از خرابی
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کلمات کلیدی
مدیریت زنجیره تامین، ریسک عرضه، زمان رهبری اتفاقی، کنترل موجودی بهینه، قطعات یدکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
علوم کامپیوتر (عمومی)
چکیده انگلیسی
Spare parts supply chains are highly dependent on the dynamics of their installed bases. A decreasing number of capital products in use increases the nonstationary supply-side risk especially towards the end-of-life of capital products. This supply-side risk appears to present itself through varying lead times coupled with supply disruptions. To model the nonstationary supply-side risk, we consider an exogenous Markov chain that modulates random lead times and disruption probabilities. Assuming that order crossovers do not occur, we prove the optimality of a state-dependent base stock policy. Later, we conduct an impact study to understand the value of considering stochastic lead times and supply disruption risk in spare parts inventory control. Our results indicate that the coupled effect of random lead times and disruptions can be larger than the summation of individual effects even for moderate lead time variances. Also, the effect of nonstationarity on total cost can be as large as the summation of all risk factors combined. In addition to this managerial insight we present a procedure for supply risk mitigation based on an empirical model and our mathematical model. Experiments on a real business case indicate that the procedure is capable of reducing costs while making the inventory system more prepared for disruptions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Operational Research - Volume 269, Issue 3, 16 September 2018, Pages 909-922
Journal: European Journal of Operational Research - Volume 269, Issue 3, 16 September 2018, Pages 909-922
نویسندگان
Mustafa HekimoÄlu, Ervin van der Laan, Rommert Dekker,