Availability of Repairable Units When Failure and Restoration Rates Age in Real Time
- 1 June 1976
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Reliability
- Vol. R-25 (2) , 88-94
- https://doi.org/10.1109/TR.1976.5214988
Abstract
In reliability engineering and practice an important role is played by those units whose life characteristics change with time. The case is herewith considered where change underlies a nonhomogeneous Markov model. Simple repair processes then deal with a 2-state alternating policy resulting from the superposition of failure and restoration, both showing a continuous aging with time. Availability can be expressed through linear differential equations or by means of integral equations; the approaches are equivalent. A computer code is then described which calculates (i) availability, and (ii) transition densities for any continuous time dependence of failure and restoration rates. Numerical results are shown for a few examples.Keywords
This publication has 1 reference indexed in Scilit:
- A time-dependent methodology for fault tree evaluationNuclear Engineering and Design, 1970