"Mean time before failure" is a reliability calculation, often referred to as Mean Time To Failure, or MTTF. Relex Markov software from the Relex analysis tools can be applied to a wide variety of engineering applications where mean time before failure is changing with system states.

Markov analyses study dependent random events - events whose likelihood depends on what happened last, or where the sequence of occurrence must be considered for analysis. When applied in the reliability field, Markov analyses significantly enhance analysis tools such as reliability block diagrams and fault trees by factoring sequential probabilities into reliability calculations.

"Mean time between critical failure" is often simply called Mean Time Between Failures, or MTBF. PRISM is a standard for MTBF prediction and system reliability analysis, originally developed by the Reliability Analysis Center (RAC). Relex has incorporated the RAC PRISM standard into our existing suite of reliability tools, creating a powerful module called Relex PRISM that offers the best of both worlds. Other models available include MIL-HDBK-217 (a.k.a. mil-std-217), Telcordia SR-332 (a.k.a. Bellcore TR-332), RDF 2000, HRD-5, and the Chinese 299B standard.

For mean time before failure and mean time between critical failure calculations, trust Relex Software for an unprecedented level of power and flexibility for your analyses with the newest reliability standards.