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IMA Journal of Management Mathematics Advance Access published online on August 4, 2009
IMA Journal of Management Mathematics, doi:10.1093/imaman/dpp014
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© The authors 2009. Published by Oxford University Press on behalf of the Institute of Mathematics and its Applications. All rights reserved.

Modelling two-echelon serial inventory systems with perishable items

Fredrik Olsson{dagger}

Department of Industrial Management and Logistics, Lund University, PO Box 118, SE-221 00 Lund, Sweden

{dagger} Email: fredrik.olsson{at}iml.lth.se

Received on 26 September 2008. Accepted on 4 July 2009.

This paper deals with a continuous review, two-echelon serial (two locations) inventory system with perishable items. Transportation times and the lifetime of items are fixed. When the age of an item has reached its lifetime, the item is useless and consequently discarded from the system. The downstream location faces Poisson demand, and demand that cannot be met immediately is backordered. In this paper, we develop an efficient approximate technique for evaluation of (S – 1, S) policies. In a simulation study, we evaluate the quality of our approximation. The results reveal that our approximate technique works well in most cases.

Keywords: inventory control; perishable items; multi-echelon; stochastic


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