The data are given in the TurbineEngineDesign1.jmp sample data table, found in the Reliability subfolder. For each failure that occurred, the number of days since test initiation was recorded in the column Day. The number of failures on a given day, or equivalently, the number of required fixes, was recorded in the column Fixes.
1.
Open the TurbineEngineDesign1.jmp sample data table.
2.
Select Analyze > Reliability and Survival > Reliability Growth.
3.
On the Time to Event Format tab, select Day and click Time to Event.
4.
Select Fixes and click Event Count.
5.
Select Design Phase and click Phase.
6.
The Reliability Growth report appears (Observed Data Report). The Cumulative Events plot shows the cumulative number of failures by day. Vertical dashed blue lines show the two transitions between the three phases.
Observed Data Report
7.
Click the Mean Time Between Failures disclosure icon.
Mean Time between Failures Plot
8.
Click the Duane Plot disclosure icon.
Duane Plot
9.
From the Reliability Growth red triangle menu, select Fit Model > Piecewise Weibull NHPP.
Piecewise Weibull NHPP Report