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Fault Tree Analysis (FTA)
Fault Tree analysis is one of the most widely-used methods
in system reliability analysis. It is a deductive procedure
for determining the various combinations of hardware and
software failures, and human errors that could result in
the occurrence of specified undesired events (referred to
as top events) at the system level. A deductive analysis
begins with a general conclusion, then attempts to determine
the specific causes of this conclusion. This is often described
as a "top down" approach.
The main purpose of a fault tree analysis is to evaluate
the probability of the top event using analytical or statistical
methods. These calculations involve system quantitative
reliability and maintainability information, such as failure
probability, failure rate, or repair rate. FTA can provide
useful information concerning the likelihood of a failure
and the means by which such a failure could occur. Efforts
to improve system safety and reliability can be focused
and refined using the results of the FTA.
more information: http://www.physics-of-failure.com/
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