Fatigue life regression models with constant and non-constant variance are evaluated and compared with a Random Fatigue Limit Model and a Probit model to estimate the fatigue strength and S-N relationship from fatigue test data. The Maximum Likelihood method is used to estimate parameters of the above models. Emphasis also is given to assessing the variation in fatigue strength and S-N relationships estimated from different models. Two different test data sets are selected for the evaluations: (1) a full S-N test data set with a large range of stresses and (2) a staircase test data set with a characteristically more narrow range of stresses. Model adequacies are evaluated from residuals and Anderson Darling measures of their fits. The Random Fatigue Limit Model is observed to best fit the test data, but its large number of parameters are under constrained with staircase test data and require care to get good results.


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    Titel :

    Evaluation of Fatigue Life Regression Models


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Awad, Mahmoud (Autor:in) / DeJack, Michael (Autor:in) / Krivtsov, Vasiliy (Autor:in)

    Kongress:

    SAE 2004 World Congress & Exhibition ; 2004



    Erscheinungsdatum :

    2004-03-08




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Evaluation of fatigue life regression models

    Awad,M. / DeJack,M. / Krivtsov,V. et al. | Kraftfahrwesen | 2004


    Evaluation of Fatigue Life Regression Models

    Awad, M. / DeJack, M. / Krivtsov, V. et al. | British Library Conference Proceedings | 2004


    Variable Amplitude fatigue life estimation models

    Socie,D. / Univ.of Illinois at Urbana-Champaign,Dep.of Mech.and.Ind.Engng. | Kraftfahrwesen | 1982


    Constant Amplitude Fatigue Life Assessment Models

    Reemsnyder, Harold S. | SAE Technical Papers | 1982


    Variable Amplitude Fatigue Life Estimation Models

    Socie, Darrell | SAE Technical Papers | 1982