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Revision as of 20:19, 9 June 2014
RGA_Reference_Examples_Banner.png
This example compares the results for multiple systems (known operating times) data.
Reference Case
MIL-HDBK-189A, Section 6.3.1.6.4, pg. 156, 2009.
Data
| Termination Time = 300 hours
+ = system failed
|
| Prototype #1
|
Prototype #2
|
Cumulative Time
|
| *2.6 |
0 |
2.6
|
| *16.5 |
0 |
16.5
|
| *16.5 |
0 |
16.5
|
| *17 |
0 |
17
|
| 20.5 |
*0.9 |
21.4
|
| 25.3 |
*3.8 |
29.1
|
| 28.7 |
*4.6 |
33.3
|
| *41.8 |
14.7 |
56.5
|
| *45.5 |
17.6 |
63.1
|
| 48.6 |
*22 |
70.6
|
| 49.6 |
*23.4 |
73
|
| *51.4 |
26.3 |
77.7
|
| *58.2 |
35.7 |
93.9
|
| 59 |
*36.5 |
95.5
|
| 60.5 |
*37.6 |
98.1
|
| *61.9 |
39.1 |
101.1
|
| *76.6 |
55.4 |
132
|
| 81.1 |
*61.1 |
142.2
|
| *84.1 |
63.6 |
147.7
|
| *84.7 |
64.3 |
149
|
| *94.6 |
72.6 |
167.2
|
| 104.8 |
*85.9 |
190.7
|
| 105.9 |
*87.1 |
193
|
| *108.8 |
89.9 |
198.7
|
| 132.4 |
*119.5 |
251.9
|
| 132.4 |
*150.1 |
282.5
|
| 132.4 |
*153.7 |
286.1
|
Result
Beta = 0.716, Lambda – 0.454
DMTBF = 15.5 hours
Using significance level = 0.05. CVM = 0.091. Critical value = 0.218. Since CVM < critical value can fail to reject hypothesis that model fits the data.
Results in RGA
