An experimental and analytical investigation was performed to characterize damage initiation and progression along the frame/skin interface of the aft crown panel fuselage section in a commercial aircraft. The effect of manufacturing procedures on damage initiation and failure processes was addressed by evaluating five different frame/skin assemblies. Crack initiation and progression as a function of applied load and the local failure events were monitored and recorded using a high magnification closed circuit television system. For selected specimens, acoustic emission was monitored, X-radiography was performed, and fracture surface morphologies were examined via the scanning electron microscope. In addition, a pilot program on the fatigue behavior of the frame/skin test elements has been conducted. The Mode I and Mode II fracture toughness of the skin and braided materials were also determined using the double cantilever beam and the end notch flexure specimen configurations. A finite element code (VISOCRACK) was employed for simulating the types of failure observed experimentally and to predict failure initiation.


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    Titel :

    Evaluation of frame/skin bond strength and durability for advanced composite fuselage crown structures


    Weitere Titelangaben:

    Bewertung der Rahmen/Haut-Verbindungsfestigkeit und Dauerhaftigkeit für Endstrukturen von Flugzeugrümpfen aus hochentwickelten Verbundwerkstoffen


    Beteiligte:
    Pointer, R. (Autor:in) / Awerbuch, J. (Autor:in) / Wang, A.S.D. (Autor:in)


    Erscheinungsdatum :

    1994


    Format / Umfang :

    9 Seiten, 7 Bilder, 1 Tabelle



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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