Template:Aw reliable life: Difference between revisions

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====The Reliable Life====
#REDIRECT [[Distributions_Used_in_Accelerated_Testing]]
For the 2-parameter Weibull distribution, the reliable life,  <math>{{T}_{R}}</math> , of a unit for a specified reliability, starting the mission at age zero, is given by:
 
 
::<math>{{T}_{R}}=\eta \cdot {{\left\{ -\ln \left[ R\left( {{T}_{R}} \right) \right] \right\}}^{\tfrac{1}{\beta }}}</math>
 
 
This is the life for which the unit will function successfully with a reliability of  <math>R({{T}_{R}})</math> . If  <math>R({{T}_{R}})=0.50</math>  then  <math>{{T}_{R}}=\breve{T}</math>,
the median life, or the life by which half of the units will survive.
 
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Revision as of 10:17, 9 August 2012