Template:Example:TNT: Difference between revisions
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::<math>\begin{align} | ::<math>\begin{align} | ||
& \widehat{Std}= & 0. | & \widehat{Std}= & 0.182558 \\ | ||
& \widehat{B}= & 3729. | & \widehat{B}= & 3729.650303 \\ | ||
& \widehat{C}= & 0. | & \widehat{C}= & 0.035292 \\ | ||
& \widehat{n}= & 0. | & \widehat{n}= & 0.776797 | ||
\end{align}</math> | \end{align}</math> | ||
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A probability plot for the use stress levels of 323K and 2V is shown next. | A probability plot for the use stress levels of 323K and 2V is shown next. | ||
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[[Image:T-NT_Ex1.gif|thumb|center|300px|]] | |||
<br> | <br> | ||
An acceleration factor plot, in which one of the stresses must be kept constant, can also be obtained. For example, in the following plot, the acceleration factor is plotted versus temperature given a constant voltage of 2V, as shown next. | An acceleration factor plot, in which one of the stresses must be kept constant, can also be obtained. For example, in the following plot, the acceleration factor is plotted versus temperature given a constant voltage of 2V, as shown next. | ||
<br> | <br> | ||
Revision as of 01:40, 17 February 2012
TNT Example
Twelve electronic devices were put into a continuous accelerated test and the following data were collected.
Using ALTA and the T-NT lognormal model, the following parameters were obtained:
- [math]\displaystyle{ \begin{align} & \widehat{Std}= & 0.182558 \\ & \widehat{B}= & 3729.650303 \\ & \widehat{C}= & 0.035292 \\ & \widehat{n}= & 0.776797 \end{align} }[/math]
A probability plot for the use stress levels of 323K and 2V is shown next.
An acceleration factor plot, in which one of the stresses must be kept constant, can also be obtained. For example, in the following plot, the acceleration factor is plotted versus temperature given a constant voltage of 2V, as shown next.