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bathtub curve

   Also found in: Wikipedia, Hutchinson 0.01 sec.
bathtub curve [′bath‚təb ‚kərv]
(industrial engineering)
An equipment failure-rate curve with an initial sharply declining failure rate, followed by a prolonged constant-average failure rate, after which the failure rate again increases sharply.
bathtub curve - Common term for the curve (resembling an end-to-end section of one of those claw-footed antique bathtubs) that describes the expected failure rate of electronics with time: initially high, dropping to near 0 for most of the system's lifetime, then rising again as it "tires out". See also burn-in period, infant mortality.
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The bathtub curve has three defined sections: [FIGURE 1 OMITTED] * Early failures: There is a high occurrence of the component failing due to poor application and/or installation errors.
Reliability analysis in reciprocating compressors for refrigeration ... by Bassetto, Izeds Felipe Facchini; Neto, Alberto Hernandez; de Souza, Gilberto Francisco Martha / HVAC & R Research
A bathtub curve suggests maintenance-induced failure is a significant threat to any piece of equipment that has undergone some form of routine maintenance.
Microbial maintenance by David Hillyer and James Cox / InTech
Wg Cdr Bromehead, in evidence, said: "The bathtub curve is a general engineering principle that is when something gets old, it is more likely to break.
RAF in 'turmoil' with an aircraft 'past sell-by date' by Daily Post (Liverpool, England)
 
 
 
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