Article ID: | iaor20013549 |
Country: | United States |
Volume: | 13 |
Issue: | 4 |
Start Page Number: | 321 |
End Page Number: | 346 |
Publication Date: | Oct 2000 |
Journal: | Journal of Applied Mathematics and Stochastic Analysis |
Authors: | Cocozza-Thivent Christiane |
Keywords: | stochastic processes, probability |
This paper exhibits a stochastic model which describes the evolution of a material submitted to inspections. When an inspection takes place, a decision depending on the observed state of the material is taken. If the material is in ‘not too bad’ state, no service is rendered, only the date of the next inspection is chosen. If the material is in a ‘bad’ working state, a service takes place. Roughly speaking, the failure rates of the material are constant, the inspection and repair rates are general. We define the average cost function corresponding to the utilization of this material and we how it can be computed. Then we determine the inspection rates which give the optimal maintenance policy using a simulated annealing algorithm. We observe experimentally that the best durations between inspections are deterministic ones.