Test-Fix-Test Data (Failure Terminated) Reference Example: Difference between revisions
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{{ | {{Reference Example|{{Banner RGA Reference_Examples}}}} | ||
This example validates the results for test-fix-test data (failure terminated) in RGA. | |||
{{Reference_Example_Heading1}} | {{Reference_Example_Heading1}} | ||
International Standard IEC 61164 (Reliability Growth in Product Design and Test – Statistical Test and Estimation Methods), Example | International Standard IEC 61164 (Reliability Growth in Product Design and Test – Statistical Test and Estimation Methods), Example 2 – Case 1, pg. 30. | ||
{{Reference_Example_Heading2}} | {{Reference_Example_Heading2}} | ||
{| {{table}} | The following table shows the data. | ||
{| {{table|12%}} | |||
|- | |- | ||
| 2 | | 2 | ||
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| 975 | | 975 | ||
|- | |- | ||
|+'''Termination Time = 975 hours''' | |||
|} | |} | ||
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{{Reference_Example_Heading3}} | {{Reference_Example_Heading3}} | ||
Beta (UnB) = 0.5594, Lambda = 1.1067 | The book has the following results: | ||
*Beta(UnB) = 0.5594, Lambda = 1.1067 | |||
*CL = 0.9 (two-sided confidence bounds on DMTBF) | |||
*DMTBF<sub>Upper</sub> = 46.7 hours | |||
*DMTBF = 33.5 hours | |||
DMTBF = | *DMTBF<sub>Lower</sub> = 24.3 hours | ||
*CVM = 0.041, critical value = 0.173. Since CVM < critical value can fail to reject hypothesis that the model fits the data. | |||
{{Reference_Example_Heading4|RGA}} | |||
In RGA, the Crow-AMSAA (NHPP) model with the maximum likelihood estimation (MLE) method was used to calculate the results. | |||
*The model parameters are: | |||
[[image:IEC 61164 Example 1 - Case 2_Results.png|center]] | [[image:IEC 61164 Example 1 - Case 2_Results.png|center]] | ||
*The Cramér-von Mises goodness-of-fit test result: | |||
[[image:IEC 61164 Example 1 - Case 2_Stat Tests.png|center]] | [[image:IEC 61164 Example 1 - Case 2_Stat Tests.png|center]] | ||
*The instantaneous MTBF and its two-sided 90% confidence intervals are shown next. The confidence bounds in the QCP are calculated using Crow Bounds methodology. | |||
[[image:IEC 61164 Example 1 - Case 2_QPC.png|center]] | [[image:IEC 61164 Example 1 - Case 2_QPC.png|center]] | ||
Latest revision as of 18:27, 28 September 2015
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