Previous studies in the issue of supply chain models with imperfect quality assumed the defectives could be sold at lower unit price by the end of the inspection process and the lot-for-lot delivery policy was employed. However, in practice, defective items may have no salvage value but may need additional disposal cost to process them. The beginning of the printed circuit board (PCB) industry ...

Fulfillment on demand is one of the problems uncertainty that usually afflicts a company because raw materials and products are expected to be obtained at right place time relatively low cost. PT XYZ companies located in Bogor with process processing mining form gold ore as main mineral silver secondary its operations requires some supporting spare parts hauling equipment machinery, which cone ...

A chance-constraint multi-objective model under uncertainty in the availability of subassemblies is proposed for scheduling in ATO systems. The on-time delivery of customer orders as well as reducing the company's cost is crucial; therefore, a three-objective model is proposed including the minimization of1) overtime, idletime, change-over, and setup costs, 2) total dispersion of items’ deliver...

Joint economic lot sizing (JELS) addresses integrated inventory models in a supply chain. Most of the studies in this field either do not consider the role of the transportation cost in their analysis or consider transportation cost as a fixed part of the ordering costs. In this article, a model is developed to analyze an incremental quantity discount in transportation cost. Appropriate equatio...

the aim of this article is study of tool plunge depth (tpd) effects on mechanical properties of friction stir welding of aa1100 aluminium alloy to a441 aisi steel. for this purpose the 0.1, 0.2, 0.4, and 0.6 mm tpd selected and other welding parameters kept constant. the results shows that the frictional heat increases and stir zone grain size decreases with increasing tpd at both base metals. ...

This paper deals with the determination of production-shipment policy for an integrated vendor-buyer system. The inventory model contains two decision variables: the replenishment lot size and the number of deliveries. This paper solves the inventory model considering two cases: 1) the replenishment lot size as continuous variable and the number of shipments as discrete variable, and 2) the rep...