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Degradation Analysis Folio

Degradation Model Wizard

The Degradation Model Wizard performs a goodness of fit test to determine the best degradation model for your data. Note that the degradation model wizard only serves as a guide. You should compare its suggestion with information about the product being modeled before making the final decision.

You can access the wizard by choosing [Degradation/Destructive Degradation] > Analysis > Model Wizard or by clicking its icon on the Main page of the control panel.

Evaluating and Using Degradation Models

On the Main tab of the Degradation Model wizard, select the models you would like to consider. The available models will vary depending on which degradation analysis folio you are working with.

Click Analyze to start the evaluation. The results of the evaluation will be presented as in the example shown next.

The models will be ranked according to how well they fit the data, with rank 1 being the best fit. In the example shown above, the exponential model is the suggested model for the data set. Click Implement to extrapolate failure times using the suggested model.

Viewing the Analysis Details

The wizard uses the Sum of Square Error (SSE) to evaluate the fit of the data. The calculations behind the ranking can be viewed on the Analysis Details tab, which contains two data sheets:

 

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