Engineering components and systems are usually subjected to mixed-mode and multiaxial fatigue loadings, and these conditions should be considered in product durability and reliability design and the maintenance of aging equipment, especially mission-critical components and systems. However, modeling the damage and degradation processes under these complex loading conditions is difficult and challenging task because not only the concepts, such as range, mean, peak, valley etc., developed for uniaxial loading usually cannot be directly transferred to mixed-mode and multiaxial loadings, but also some very unique phenomena related to these complex loading conditions. One such a phenomenon is the loading path effect that can be simply described as: out-of-phase loading is more damaging than in-phase loading for some ductile materials. To capture the loading path effect as observed in both mixed-model fatigue crack growth and multiaxial fatigue life test data, a new two-parameter driving force model (i.e., maximum principal stress and path length) has been proposed and some preliminary analyses have been conducted and qualitative descriptions have been given. In this paper, the mixed-mode fatigue crack growth and the multiaxial fatigue life data are reanalyzed with a more rigorous approach, and quantitative results are obtained.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Two-Parameter Model for Mixed-Mode Fatigue Crack Growth and Multiaxial Fatigue


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015



    Publication date :

    2015-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A two-parameter model for mixed-mode fatigue crack growth and multiaxial fatigue

    Wei,Z. / Dong,P. / Tenneco Automotive,US et al. | Automotive engineering | 2015


    A Two-Parameter Model for Mixed-Mode Fatigue Crack Growth and Multiaxial Fatigue

    Wei, Zhigang / Dong, Pingsha | British Library Conference Proceedings | 2015


    Multiaxial Fatigue Crack Initiation in Rubber

    Mars, W.V. | Online Contents | 2001


    Multiaxial fatigue assessment

    Heyes,P. / Milstead,M. / Dakin,J. et al. | Automotive engineering | 1994


    Multiaxial Notch Fatigue

    Emerald Group Publishing | 2009