Weibull++ Weibull Degradation Plot ptProbability: Difference between revisions

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The Probability plot shows the trend in the probability of failure over time. The plotting positions of the data points are determined by the failure/suspension times in the data set (x-axis) and their corresponding unreliability estimates (y-axis).
Degradation analysis is a technique that uses the performance measurements (degradation measurements) of a product over time to predict the point at which each unit in the sample is expected to fail. This analysis is useful for tests performed on products with very high reliability, where it is not possible to test the products to failure under normal operating conditions.  
 
When the parameters have been calculated using rank regression analysis, the regression line is fitted to the data points on the plot in order to obtain the distribution parameters. Therefore, the plot can also be used to compare how different distributions fit a particular data set. The closer the regression line tracks the points on the plots, the better the fit.
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| [http://help.synthesis8.com/weibull_alta8/life_data_analysis_plots.htm the help files...]
| [http://help.synthesis8.com/weibull_alta8/weibull_degradation_analysis_folio.htm the help files...]
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Revision as of 23:17, 22 March 2012

Degradation Plot Probability - Gumbel

Degradation analysis is a technique that uses the performance measurements (degradation measurements) of a product over time to predict the point at which each unit in the sample is expected to fail. This analysis is useful for tests performed on products with very high reliability, where it is not possible to test the products to failure under normal operating conditions.

Learn more from...

the help files...
the theory textbook...
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