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1.

2.

Select Analyze > Reliability and Survival > Degradation.

3.

Select the Destructive Degradation tab.

4.

5.

6.

7.

8.

Click OK.

1.

Select Lognormal from the menu in the Location Parameter Path Specification panel in the Model Specification outline.

2.

Select Degradation Path Style > Nonlinear Path from the Degradation Data Analysis red triangle menu.

Parameter(
{b1 = 50, b2 = 50, b3 = 1},
b1 * :Degrees + b2 * Exp( b3 * Sqrt( :Weeks ) )
)
5.

Click Use & Save.

6.

Click Fit Model.

The Parameter panel in the Model Specification outline is updated to show the parameter estimates for the fitted model. The model fit is shown in the Overlay plot. You can drag the axes to show the points, as is done in Plot of Fitted Model. The legend identifies the curves.
1.

Select Prediction Settings from the Degradation Data Analysis red triangle menu.

2.

In the Prediction Settings window:

3.

Click OK.

4.

Select the Prediction Graph tab in the report.

5.

From the Prediction Plot red triangle menu, select Save Predictions.

Predicted values for the three values of Degrees and for the desired baseline of 25 degrees are saved to a data table. The predicted strength of the adhesive bond after 1 year at 25o C is 61.96, with a prediction interval of 42.42 to 90.50.