Abstract
This paper discusses an integrated model of batch production and maintenance scheduling on a deteriorating machine producing multiple items to be delivered at a common due date. The model describes the trade-off between total inventory cost and maintenance cost as the increase of production run length. The production run length is a time bucket between two consecutive preventive maintenance activities. The objective function of the model is to minimize total cost consisting of in process and completed part inventory costs, setup cost, preventive and corrective maintenance costs and rework cost. The problem is to determine the optimal production run length and to schedule the batches obtained from determining the production run length in order to minimize total cost.
Highlights
Delay in delivering order in a manufacturing company to consumer can be caused by several factors, such as no coordination between production and maintenance divisions in the manufacturing system, among others
This research deals with integrating model of batch scheduling and maintenance scheduling on a single deteriorating machine that produces a number of parts of multiple items to be delivered on a common due date
BB[111] dd Assuming that each production run is considered as an item with no preventive maintenance (PM) intervals and the number of runs becomes a number of the type of items, the total inventory holding cost for single production run for multiple items single machine can be formulated as follows: TTTTTTTT[1,pp] = cc11 ∑Nii1N111=−11 ∑ilil1111=1 tt1QQ[ll11] + ss QQ[(ii+1)11]
Summary
Delay in delivering order in a manufacturing company to consumer can be caused by several factors, such as no coordination between production and maintenance divisions in the manufacturing system, among others It may cause in the following conditions. Company X gets some orders of machinery works in large quantities from its partner industries It processes the orders in batches with constant sizes determined by the production division. The researchers discuss models considering a deteriorating machine, single item, discrete product types, and decision on the number and size of the batches and an optimal maintenance time as affected by trade off of setup cost, quality cost, restoration cost, inventory holding cost, and reward cost. This research deals with integrating model of batch scheduling and maintenance scheduling on a single deteriorating machine that produces a number of parts of multiple items to be delivered on a common due date.
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