A method is proposed to equate actual operating oil temperature/time profiles to a single oil test temperature/time. This calculated equivalent oil temperature can be used to determine the useful life of oil versus temperature for thermal degradation.A single oil temperature can be selected for an accelerated test which equates to long duration, multi-temperature conditions.This paper uses Allied-Signal Aerospace Company test data for Mobil Jet II oil life versus temperature and employs an accumulated damage model similar to Miner's rule to determine oil life. This paper (1) defines useful life (2) calculates the life exponent for the accumulated damage equivalent life equation, and (3) presents a sample where it is used.The method is proposed for consideration and comments since oil thermal degradation is a complex process with nonlinearities in various stages due to chemical inhibitors.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Accumulated Thermal Damage Analysis of Synthetic Turbine Engine Oils


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Aerospace Technology Conference and Exposition ; 1992



    Publication date :

    1992-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :



    Synthetic Engine Oils - A New Concept

    Miller, B. J. / Smith, D. B. / Rogers, T. W. et al. | SAE Technical Papers | 1974


    PERFORMANCE OF TURBO ENGINE SYNTHETIC OILS

    CRAMPTON, A. B. / PENNEKAMP, E. F. H. / LIFSON, W. E. et al. | SAE Technical Papers | 1952


    Synthetic engine oils - a new concept

    Miller, B. / Rogers, T. / Smith, D. | Tema Archive | 1974


    Electrochemical Evaluation of Corrosivity in Turbine Engine Oils

    Stallings, L. / Rebuck, N. / Kennedy, P. et al. | SAE Technical Papers | 1985