Weibull++ Standard Folio Data CFM-Weibull: Difference between revisions

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Often, a group of products will fail due to more than one failure mode.
The objective of life data analysis is to fit a statistical distribution to failure time data in order to understand the reliability performance of a product over time or to make projections about future behavior. From the analysis, you can estimate several life characteristics, such as probability of failure, reliability, mean life or failure rate.
 
In order to begin analyzing data sets with more than one competing failure mode, one must perform a separate analysis for each failure mode. During each of these analyses, the failure times for all other failure modes not being analyzed are considered to be suspensions. This is because the units under test would have failed at some time in the future due to the failure mode being analyzed, had the unrelated (not analyzed) mode not occurred.  Thus, in this case, the information available is that the mode under consideration did not occur and the unit under consideration accumulated test time without a failure due to the mode under consideration (or a suspension due to that mode).
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| [http://help.synthesis8.com/weibull_alta8/competing_failure_modes_analysis.htm the help files...]
| [http://help.synthesis8.com/weibull_alta8/index.htm#weibull_standard_folios.htm the help files...]
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Revision as of 23:56, 21 March 2012

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Standard Folio Competing Failure Modes-Weibull

The objective of life data analysis is to fit a statistical distribution to failure time data in order to understand the reliability performance of a product over time or to make projections about future behavior. From the analysis, you can estimate several life characteristics, such as probability of failure, reliability, mean life or failure rate.

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