To reduce the weight and to increase the power as well as to enable the utilization of nodular cast iron components, e.g. for wind turbines and heavy industry parts, locally higher stresses need to be withstood by the material. This becomes crucial, when additional overloads influence the structure of thick-walled components causing high local elastic-plastic deformations. In this case, the cyclic, elastic-plastic material behavior and its development under cyclic loading are important points to be considered during component design. To assess the material’s local elastic-plastic material behavior, strain-controlled fatigue tests were performed under alternating loading, Rε = -1, with unnotched specimens removed from cast blocks as well as from a hub and a planet carrier of wind turbines, made of EN-GJS-400-18U-LT, EN-GJS-700-2, ADI-800 and ADI-900. To determine the influence of constant and variable amplitude loading on the elastic-plastic material behavior, fatigue tests were performed based on constant amplitude as well as on variable amplitude loading. For the fatigue tests under variable amplitude loading, two real load-time histories, which were derived from a measured load-time series from the base frame of the nacelle and the hub of a wind turbine, were used. In order to analyze the influence of an additional overload during usage, additional test series with maximum overloads of 0.5 and 1.0 % under pressure loading were embedded in the load sequence and the results compared to those without overload.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Fatigue Behavior of Large Cast Components under Variable Amplitude Loading with Overloads


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    WCX SAE World Congress Experience ; 2019



    Erscheinungsdatum :

    02.04.2019




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Fatigue Behavior of Large Cast Components under Variable Amplitude Loading with Overloads

    Bleicher, Christoph / Wagener, Rainer / Kaufmann, Heinz | British Library Conference Proceedings | 2019


    Fatigue Behavior of Spot Welds under Variable-Amplitude Loading

    Imholf, E. J. / Davidson, J. A. / Barsom, J. M. | SAE Technical Papers | 1985


    Fatigue behavior of spot welds under variable-amplitude loading

    Barsom,J.M. / Davidson,J.A. / Imholf,E.J. et al. | Kraftfahrwesen | 1985


    Fatigue Crack Growth under Variable Amplitude Loading

    Sidawi, J. A. / United States; Federal Aviation Administration / United States; National Aeronautics and Space Administration | British Library Conference Proceedings | 1994