Bathtub Curve and MTBF
A site dedicated to data-driven reliability decisions
Mission Reliability
MTBF
Terms/Concepts
For the disambiguation and clarification purpose, in addition to the standard or the affirmative way of definitions, NEGATIONS (apophasis) as well as CONTRASTS and DISTINCTIONS are also introduced.
Reliability
Reliability is the likelihood of an objective to be achieved for a product to function satisfactorily in field.
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defined:
-as LIKELIHOOD, not probability
-per SUCCESSES, where a success is an OUTCOME, not an event​
MTBF
MTBF is a reliability metric, especially for products or systems exhibiting failures in a shape of a bathtub curve. Information on MTBFs supports decision making for engineering development and service operations in management and planning.
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