Figure 3 - available via license: Creative Commons Attribution 4.0 International
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The window fill rate as a function of the spares when repair is in-house (IR model) for different values of cycle time. The other parameters' values are when λ = 2, L(x) ∼ U(0, 10), and w = 5. The dotted line expresses the number of spares needed to maintain an 80% window fill rate.
Source publication
Background: Exchangeable item repair systems are inventory systems. A nonfunctional item is exchanged for a functional item and returns to the system after being repaired. In our periodic review setting, repair is performed either in-house or outsourced. When repair is in-house, a repaired item is returned to stock regardless of the repair status o...
Contexts in source publication
Context 1
... Figures 3 and 4, we show the window fill rate and the IR and OR models, respectively. In each figure, we depict the window fill rate for different order cycle times. ...
Context 2
... too, has been demonstrated in other models such as [37] and should be always considered by managers when they consider reducing order frequency to ordering costs. For example, if managers wish to maintain a performance level of an 80% window fill rate, then by Figure 3, in the IR model, if r = 4, then only 9 spares are needed whereas if r = 7 and r = 10, then 14 and 17 spares are needed, respectively. For the OR model, by Figure 4, the numbers of spares needed are 17, 22, and 27 when r = 4, 7, and 10, respectively. ...
Context 3
... our sensitivity analysis demonstrates that the window fill rate shifts to the right when the order cycle time increases (Figures 3 and 4) and when the tolerable wait decreases ( Figure 5). In other words, if managers have a shortage of spare parts, they must renegotiate contracts for longer service times. ...