infant-mortality failure

infant-mortality failure
 n.β€” Β«Dr. Ulrich’s analysis of NTSB data proves conclusively what I’ve long believed to be true: By far the highest risk of catastrophic engine failure occurs when the engine is youngβ€”during the first two years and 200 hours after initial manufacture, rebuild or overhaulβ€”due to what we refer to as “infant-mortality failures” involving defects in materials and/or workmanship in assembling the engine.Β» β€”β€œThe Savvy Aviator #53: The Dark Side of Maintenance” by Mike Busch AVweb Jan. 17, 2008. (source: Double-Tongued Dictionary)

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  • Infant mortality is a well established term for referring to the left-most (decreasing) portion of the even-more-well-known Bathtub Failure Rate model.

    Here are some citations from google book search:

    “Dynamic Business Strategy: The Art of Planning for Success”
    page 19.2
    1977

    “Advances in Instrumentation”
    v.41 pt.1
    page 144
    1973

    “IEEE Transactions on Electron Devices”
    v.26 1979 Jan-Jun
    page 38
    orig. pub 1963

    See also this page:
    http://quanterion.com/FAQ/Bathtub_Curve.htm
    which describes the bathtub model in detail and cites a study in the 1950s as originating it. It also cites a work (of which I would only find newer copies online) published in 1961.

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