The results of a test program to evaluate the ability of a bonded-on precracked coupon to monitor the growth of flaws in the basic structure are included. All testing utilized 7075-T651 aluminum from a single plate. Both constant thickness and stepped crack gages were evaluated. Evaluation of a wide range of sensitivity in crack gage crack growth response was made. Structure flaws of (1) corner flaw at a hole, (2) through flaw at a hole, and (3) center notch flaw were evaluated. The cyclic test loading included constant amplitude of two R ratios and three representative aircraft usage flight profiles. Strain gage instrumentation was used to measure structure stresses and load transferred into the crack gages. (DePo)


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    Titel :

    Evaluation of the crack gage concept for monitoring aircraft flaw growth potential


    Weitere Titelangaben:

    Bewertung eines Entwurfes fuer ein Risspruefgeraet fuer die Ueberwachung der Risseinleitung bei Flugzeugen


    Beteiligte:
    Cassatt, G.G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1979


    Format / Umfang :

    264 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch




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