in statistical mode 5.
to use the Weibull reliability mode.
For calculating the Weibull properties of a data set the data must entered in the input table 1. The result will be displayed in the result array 3.
and the weibull graph will be plotted 9.
Suspensions for not failed units or fail by different failure mode, can be set by right clicking on these cells. The suspended units will be marked gray in the input table 1.
More about what the influence of suspensions
on the Weibull curve are.
The calculations of the selection boxes 8.
etc.) are affected
by the suspensions!
Upper lower or both can be set in the statistical mode plane 5.
The level can be set in the same plane.
To see the actual data from the Weibull graph Select graph
in the statistical mode plane 5.
To see the data from the upper lower or mean change the check box upper left of the raw data table.
Calculation of the Y-axle (Median rank)
In case of suspensions
Regression for β and η
Confidence interval (beta-Binominal)
η (eta) = Characteristic life (63.2% of the samples will have failed)
β (beta) = slope of the weibull plot
n = amount of samples the units in test