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Factorial Reliability Designs: Data Tab

After you build a factorial reliability design, the Data tab will include a test plan with Life Data columns for entering response data. The first ten rows of an example plan with interval data are shown next.

Each row represents a test run. The green columns display the factor level combinations to be used in each run, and the last column records the response values measured for each run. For example, first row shows that the factors levels for the first run were set to low, low, low, high and high for each factor. At this run, the test unit failed was found to not be failed at time = 14 and was found failed at time = 16.

All of the available columns for factorial reliability designs are described in more detail below. To hide/show columns, use the Visible Columns window.

Tip: If you need to use a non-randomized order in an actual experiment, you can sort the design by clicking a cell in the column you wish to sort by and choosing Sheet > Sheet Actions > Sort > [Order]. For example, if changing levels in a randomized experiment would be too expensive, you can sort the design table by factor levels.

Factor levels can be displayed as the actual values assigned in the factor properties or as coded values. When you use coded values for two level factorial or Plackett-Burman designs, the low level will be displayed as -1 and the high level will be displayed as 1. When you use coded values for general full factorial or Taguchi OA factorial designs, the lowest level will be displayed as 1, the next level as 2, and so on. To switch between coded and actual values, choose Data > Display > [Value Type].

 

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