 |
New format available! This reference is now available in a new format that offers faster page load, improved display for calculations and images and more targeted search.
As of January 2024, this Reliawiki page will not continue to be updated. Please update all links and bookmarks to the latest references at RGA examples and RGA reference examples.
|
Grouped Per Configuration Reference Example |
This example compares the results for grouped per configuration data.
Reference Case
MIL-HDBK-189C, Section 6.2.3.2, pg. 86, 2011.
For this example, the Crow-AMSAA (NHPP) model parameters will be calculated.
Data
The following table shows the data.
| Configuration Number | Number of Failures in Configuration | Number of Trials in Configuration |
|---|---|---|
| 1 | 5 | 14 |
| 2 | 3 | 19 |
| 3 | 4 | 15 |
| 4 | 4 | 20 |
Result
The book has the following results:
Beta = 0.780, Lambda = 0.595
| Configuration i | Reliability for Configuration i |
|---|---|
| 1 | 0.667 |
| 2 | 0.766 |
| 3 | 0.794 |
| 4 | 0.810 |
Results in RGA
In RGA, the Crow-AMSAA (NHPP) model with the maximum likelihood estimation (MLE) method was used to calculate the results.
| Configuration i | Reliability for Configuration i |
|---|---|
| 1 | 0.6668 |
| 2 | 0.7662 |
| 3 | 0.7939 |
| 4 | 0.8096 |
