An order-level inventory model for deteriorating items having constant deterioration rate was studied by Shah and Jaiswal (1977).
Srivastava and Gupta (2007) studied an EOQ model for deteriorating items with constant deterioration rate, both the constant and time-dependent demand rate and no-shortages.
The inventory models for deteriorating items with constant deterioration rate and exponential demand rate are established by Hollter and Mak (1983) and Ouyang et al.
(2013) developed an inventory model for deteriorating items with time-proportional deterioration rate, time-dependent linear demand rate and time-varying holding cost under partial backlogging.
The model can be extended in several ways, for example, we may consider the deteriorating items with a constant deterioration rate.
Accordingly, Hsu et al. (2010) first investigated the impact of deteriorating inventory with a constant deterioration rate, time-dependent partial backorders and preservation technology investment.
Another class of researches on inventory model for deteriorating items was developed by considering the deterioration rate as time-proportional.
Dye (2013) has presented a noninstantaneous deteriorating item in his model, to reduce deterioration rate he has introduced preservation technology investment and reached on decisions.
Misra (1975) suggested an optimum production lot size inventory model for deteriorating items by including both constant and varying deterioration rate.
(2011) discussed an order-level inventory model for a deteriorating item with time-dependent quadratic demand rate and constant deterioration rate.
To illustrate the results obtained from the inventory model for deteriorating items with two-component demand rate and time-proportional deterioration rate, the following numerical example is considered.
