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Track 2 Session 7
1:10 to 2:20 p.m. Thursday
June 15, 2006
Applying Management Strategy Metrics
During Development Testing
A reliability growth program
differs from a conventional reliability program in that there is a
more objectively developed growth standard against which assessment
are compared. A comparison between the assessment and the planned
value provides a good estimate of whether or not the program is
progressing as scheduled and will attain the desired goal. If the
program does not progress as planned, then new strategies should be
considered. For example, a reexamination of problem areas may result
in changing the management strategy so that more problem failure
modes surfaced during the testing actually receive a corrective
action instead of a repair. The management strategy may be driven by
budget and schedule but it is defined by the actual actions of
management in correcting reliability problems. The proper approach
to what modes to fix and when is often difficult, particularly if
certain failure patterns and trends are not measured and understood.
In this paper we discuss management strategy concepts and provide
metrics to aid management and engineering in interpreting certain
key trends and averages during reliability growth development
testing. Important metrics discussed include growth potential,
unseen problem mode failure rate, and effectiveness factors which
are very useful for keeping a development program on track to meet
requirements. These concepts are illustrated by numerical examples
and applications to case studies.
Key Words: Reliability
Growth, Management Strategy
Larry H. Crow
Crow Reliability Resources, Inc. |
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