Fatigue experiments have been conducted to assess the influence of the method of reconstituting a load sequence from a range-pair counted load spectrum for a fighter aircraft. In addition to the original flight-by-flight sequence, several quite-structured reconstituted sequences and random reconstituted sequences were used, all sequences having identical range-pair counts. There was little or no difference in crack propagation lives or total lives of two specimen geometries for the several structured sequences which were designed to give the extremes in crack growth life. There was, also, no significant difference in crack propagation lives for specimens tested under the flight-by-flight and random sequences. Crack growth under the more-structured sequences was significantly slower than under the more-fluctuating sequences (random and flight-by-flight), though the maximum difference of 1.59:1 is small relative to other uncertainties in fatigue life assessment. These results provide a basis for implementing the Aircraft Fatigue Data Analysis System which utilizes strain range-pair counting.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Cycle counting and reconstitution, with application to the aircraft fatigue data analysis system


    Additional title:

    Aufzeichnung und Wiederherstellung der Belastungszyklen, mit Anwendung bei einem Dauerfestigkeitsanalysesystem fuer Flugzeuge


    Contributors:
    Finney, J.M. (author) / Denton, A.D. (author)


    Publication date :

    1986


    Size :

    10 Seiten, 11 Bilder, 1 Tabelle, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A Cycle Counting Algorithm for Fatigue Damage Analysis

    Richards, F. D. / LaPointe, N. R. / Wetzel, R. M. | SAE Technical Papers | 1974


    "Cycle-by-Cycle Strain-based Fatigue Analysis for the CP140/CP140A Aircraft"

    Dabayeh, A. / Oore, M. / Canadian Aeronautics and Space Institute | British Library Conference Proceedings | 1999


    Rainflow Counting Based Block Cycle Development for Fatigue Analysis using Nonlinear Stress Approach

    Guo, Mingchao / Srikantan, Sridhar / Zhang, Weidong | SAE Technical Papers | 2013



    Cycle Counting Methods and the Development of Block Load Fatigue Programmes

    Power,E.M. / Queens Univ.of Belfast,Dep.of Mech.and Ind.Engng.,GB | Automotive engineering | 1978