Test-Fix-Find-Test Data Reference Example: Difference between revisions

From ReliaWiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(6 intermediate revisions by one other user not shown)
Line 1: Line 1:
{{Reference Example|{{Banner RGA Reference_Examples}}}}
{{Reference Example|{{Banner RGA Reference_Examples}}|Test-Fix-Find-Test Data}}
This example compares the results for test-fix-find-test data.  
This example validates the results for test-fix-find-test data in RGA.  




Line 7: Line 7:
MIL-HDBK-189A, Section 7.5.2, pg. 206, 2009.
MIL-HDBK-189A, Section 7.5.2, pg. 206, 2009.


For this example, the following will be calculated:
*Parameters of the Crow Extended model
*Demonstrated MTBF (DMTBF)
*BD mode parameters
*Projected MTBF (PMTBF)




Line 180: Line 185:
*BD Mode Parameters: Beta = 0.7472, Lambda = 0.1820
*BD Mode Parameters: Beta = 0.7472, Lambda = 0.1820


*PMBTF = 11.29 hours
*PMTBF = 11.29 hours




{{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 197:




The growth potential MTBF plot:
*The PMTBF is 11.29 hours, as shown in the 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]]

Latest revision as of 18:27, 28 September 2015

RGA Reference Examples Banner.png


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

This example validates the results for test-fix-find-test data in RGA.


Reference Case

MIL-HDBK-189A, Section 7.5.2, pg. 206, 2009.

For this example, the following will be calculated:

  • Parameters of the Crow Extended model
  • Demonstrated MTBF (DMTBF)
  • BD mode parameters
  • Projected MTBF (PMTBF)


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
  • DMTBF = 7.84 hours
  • BD Mode Parameters: Beta = 0.7472, Lambda = 0.1820
  • PMTBF = 11.29 hours


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:
MIL-HDBK-189A 7.5.2 Example Results.png


  • The PMTBF is 11.29 hours, as shown in the plot:
MIL-HDBK-189A 7.5.2 Example Plot.png
Retrieved from "https://www.reliawiki.com/index.php?title=Test-Fix-Find-Test_Data_Reference_Example&oldid=60848"