Some results of mathematical simulations of bending vibrations encountered in a cracked aircraft wing under external harmonic excitation are presented. It is shown that due to the influence of the elastic non-linearity of typical cracks, superharmonic vibration regimes appear in the system response. By utilizing specific features of these regimes a new vibration method for the detection of cracks is developed, and an original procedure for transformation of the non-linear elastic properties of the damaged cross-section is proposed. Unlike traditional procedures the vibration method proposed herein shows capability of high detection sensitivity and testing reliability.


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    Title :

    Non-linear vibration method for detection of fatigue cracks in aircraft wings


    Additional title:

    Eine nichtlineare Schwingungsmethode zur Detektion von Ermüdungsrissen in Flugzeugflügeln


    Contributors:

    Published in:

    Publication date :

    2000


    Size :

    12 Seiten, 7 Bilder, 21 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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