Results are presented for a program to determine the near-threshold fatigue crack growth behavior appropriate for metallic rotorcraft alloys. Four alloys, all commonly used in the manufacture of rotorcraft, were selected for study: Aluminum alloy 7050, 4340 steel, AZ91E Magnesium, and Titanium alloy Ti-6Al-4V (beta-STOA). The Federal Aviation Administration (FAA) sponsored this research to advance efforts to incorporate damage tolerance design and analysis as requirements for rotorcraft certification. Rotorcraft components are subjected to high cycle fatigue and are typically subjected to higher stresses and more stress cycles per flight hour than fixed-wing aircraft components. Fatigue lives of rotorcraft components are generally spent initiating small fatigue cracks that propagate slowly under near-threshold cracktip loading conditions. For these components, the fatigue life is very sensitive to the near-threshold characteristics of the material.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Fatigue Crack Growth Threshold Testing of Metallic Rotorcraft Materials


    Beteiligte:
    Newman, John A. (Autor:in) / James, Mark A. (Autor:in) / Johnson, William M. (Autor:in) / Le, Dy D. (Autor:in)

    Erscheinungsdatum :

    2008-07-01


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Near threshold fatigue crack growth in structural steels

    Rudd, W.J. / Booth, G.S. | Tema Archiv | 1998


    FATIGUE CRACK CHARACTERIZATION FOR ROTORCRAFT STRUCTURES UNDER VARYING LOADS AND TEMPERATURES

    Lee, S.J. / Li, F. / Chung, H. et al. | British Library Conference Proceedings | 2013


    Vehicle Structural Fatigue Issues in Rotorcraft Flying Qualities Testing

    Martyn, A. W. / Charlton, M. T. / Padfield, G. D. | British Library Conference Proceedings | 1995


    Computational Maintenance of Rotorcraft Fatigue Testing by Advanced Program Tools

    Aleksandrin, Y.S. / Butochnikov, I.V. / Chedrik, V.V. et al. | British Library Conference Proceedings | 2007


    Design, analysis, and testing considerations of fatigue-critical rotorcraft components

    Krasnowski, B.R. / Viswanathan, S.P. / Dowling, N.E. | Tema Archiv | 1990