Joint inspection and inventory control for deteriorating items with time-dependent demand and deteriorating rate

In this paper, we consider inventory control problems for deteriorating items with maximum serviceable lifetime under mixed sales situation, both of the demand and deterioration rate are depending on time. A model is presented to formulate process that deteriorated sold consumers together items, where penalty cost products included. From literature search, study one first researches joint inspection policies situation time-dependent rate. An additional ordering contract designed improve holder’s profit. The optimal time quantities characterized contract. We show it would be more beneficial holder employ an order. Furthermore, two different considered in study: (i) during cycle; (ii) continuous monitoring cycle. numerical results net profit increase if or conducted. These provide useful insights guide decision-making products.