Slides - Åbo Akademi
Slides - Åbo Akademi
Slides - Åbo Akademi
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Failure Rate Estimation<br />
The failure rate is often assumed to be constant (this assumption<br />
simplifies calculation)<br />
Often no other assumption can be made because of the small<br />
number of available event data<br />
In this case, an estimator of the failure rate is given by:<br />
where<br />
λ = N f<br />
T f<br />
,<br />
– N f – number of failures observed during operation<br />
– T f – cumulative operating time
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