A Note on Optimal Inspection Intervals Available to Purchase

Solving an optimal test or inspection interval is a relevant problem for a machine that is subject to random failures when failures can only be revealed by periodic inspection or testing. Frequent testing increases the testing costs, while infrequent testing leads to increasing downtime and loss of production. Develops optimal test intervals and approximate analytical results. The accuracies are studied numerically. The results can also be used for optimizing the availability of standby components without economic considerations.