Template:Weibull reliable life: Difference between revisions
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Revision as of 16:35, 4 January 2012
The Weibull Reliable Life
The reliable life, [math]\displaystyle{ T_{R} \,\! }[/math], of a unit for a specified reliability,[math]\displaystyle{ R \,\! }[/math], starting the mission at age zero, is given by:
- [math]\displaystyle{ T_{R}=\gamma +\eta \cdot \left\{ -\ln ( R ) \right\} ^{ \frac{1}{\beta }} }[/math]
This is the life for which the unit/item will be functioning successfully with a reliability of [math]\displaystyle{ R \,\! }[/math], . If ,[math]\displaystyle{ R=0.50 \,\! }[/math], then [math]\displaystyle{ T_{R}=\breve{T} }[/math], the median life, or the life by which half of the units will survive.