|
|
| Line 185: |
Line 185: |
| {{Reference_Example_Heading4|RGA}} | | {{Reference_Example_Heading4|RGA}} |
|
| |
|
| In RGA, the Crow-AMSAA (NHPP) model with the maximum likelihood estimation (MLE) method was used to calculate the results. | | In RGA, the Crow Extended model with the maximum likelihood estimation (MLE) method was used to calculate the results. |
|
| |
|
| *The model parameters are: | | *The model parameters are: |
| Line 192: |
Line 192: |
|
| |
|
|
| |
|
| The growth potential MTBF plot: | | *The growth potential MTBF plot: |
|
| |
|
| [[image:MIL-HDBK-189A 7.5.2 Example_Plot.png|center|550px]] | | [[image:MIL-HDBK-189A 7.5.2 Example_Plot.png|center|550px]] |
Revision as of 18:28, 13 June 2014
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.
|
Test-Fix-Find-Test Data Reference Example
|
This example compares the results for test-fix-find-test data.
Reference Case
MIL-HDBK-189A, Section 7.5.2, pg. 206, 2009.
Data
The following table shows the data.
| Failure Time
|
Classification Mode
|
| 0.7 |
BC1
|
| 3.7 |
BC1
|
| 13.2 |
BC1
|
| 15 |
BD1
|
| 17.6 |
BC2
|
| 25.3 |
BD2
|
| 47.5 |
BD3
|
| 54 |
BD4
|
| 54.5 |
BC3
|
| 56.4 |
BD5
|
| 63.6 |
A
|
| 72.2 |
BD5
|
| 99.2 |
BC4
|
| 99.6 |
BD6
|
| 100.3 |
BD7
|
| 102.5 |
A
|
| 112 |
BD8
|
| 112.2 |
BC5
|
| 120.9 |
BD2
|
| 121.9 |
BC6
|
| 125.5 |
BD9
|
| 133.4 |
BD10
|
| 151 |
BC7
|
| 163 |
BC8
|
| 164.7 |
BD9
|
| 174.5 |
BC9
|
| 177.4 |
BD10
|
| 191.6 |
BC10
|
| 192.7 |
BD11
|
| 213 |
A
|
| 244.8 |
A
|
| 249 |
BD12
|
| 250.8 |
A
|
| 260.1 |
BD1
|
| 263.5 |
BD8
|
| 271.1 |
A
|
| 274.7 |
BD6
|
| 282.8 |
BC11
|
| 285 |
BD13
|
| 304 |
BD9
|
| 315.4 |
BD4
|
| 317.1 |
A
|
| 320.6 |
A
|
| 324.5 |
BD12
|
| 324.9 |
BD10
|
| 342 |
BD5
|
| 350.2 |
BD3
|
| 355.2 |
BC12
|
| 364.6 |
BD10
|
| 364.9 |
A
|
| 366.3 |
BD2
|
| 373 |
BD8
|
| 379.4 |
BD14
|
| 389 |
BD15
|
| 394.9 |
A
|
| 395.2 |
BD16
|
Termination Time = 400 hours
| BD Mode
|
EF
|
| 1 |
0.67
|
| 2 |
0.72
|
| 3 |
0.77
|
| 4 |
0.77
|
| 5 |
0.77
|
| 6 |
0.87
|
| 7 |
0.92
|
| 8 |
0.50
|
| 9 |
0.85
|
| 10 |
0.89
|
| 11 |
0.70
|
| 12 |
0.63
|
| 13 |
0.64
|
| 14 |
0.72
|
| 15 |
0.69
|
| 16 |
0.46
|
Result
The book has the following results:
- Beta = 0.9103, Lambda = 0.2397
- BD Mode Parameters: Beta = 0.7472, Lambda = 0.1820
Results in RGA
In RGA, the Crow Extended model with the maximum likelihood estimation (MLE) method was used to calculate the results.
- The model parameters are:
- The growth potential MTBF plot:
