Date of Award
Master of Science
Department of Operational Sciences
Jeffrey P. Kharoufeh, PhD
This thesis develops and analyzers a mathematical model for the reliability measures of a single-unit system subject to continuous wear due to its operating environment and randomly occurring shocks that inflict a random amount of damage to the unit. Assuming a Markovian operating environment and shock arrival mechanism, Laplace-Stieltjes transform expressions are obtained for the failure time distribution and all of its moments. Moreover, an analytical expression is derived for the long-run availability of the single-unit system when it is subject to an inspect-and-replace maintenance policy. The analytical results are illustrated, and their results compared with those of Monte Carlo-simulated failure data. The numerical results indicate that the reliability measures may be accurately computed via numerical inversion of the transform expressions in a straightforward manner when the input parameters are known a priori. In stark contrast to the simulation model which requires several hours to obtain the reliability measures, the analytical procedure computes the same measures in only a few seconds.
DTIC Accession Number
Finkelstein, Daniel E., "Analytical Results for a Single-Unit System Subject To Markovian Wear and Shocks" (2004). Theses and Dissertations. 3942.
Mechanics of Materials Commons, Systems Engineering and Multidisciplinary Design Optimization Commons