Fundamental technical information and analytical methodology useful in vehicle powertrain durability testing are discussed. The durability testing in a laboratory is designed to correlate to vehicle proving grounds (PG) in terms of fatigue damage. A PG loading history is often acquired by running an instrumented vehicle in one of the repeated PG events with various drivers. The statistical technique to identify a median or an extreme loading profile from a given set of PG loading histories and the algorithm to extrapolate one short-term measured load data to the expected long-term loads are reviewed. The measured load time history is converted to either a rainflow cycle counting histogram for use of a component bench test development or a rotating moment histogram for use of a powertrain gear set durability testing. Damage analysis is then performed in the histogram domain for the durability of a powertrain component and system.


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    Title :

    Accounting for driver variability in vehicle powertrain durability testing


    Additional title:

    Berücksichtigung der Fahrer-Variabilität bei Dauerhaltbarkeitstests von Fahrzeug-Triebsträngen


    Contributors:
    Lee, Y.L. (author) / Haq, S. (author) / Rilly, J.T. (author) / DiDomencio, R.L. (author)


    Publication date :

    2002


    Size :

    18 Seiten, 12 Bilder, 2 Tabellen, 14 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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