Ultrasonic methodologies of air-coupled guided waves, birefringent shear waves, and nonlinear ultrasound are presented and applied to the characterization of aerospace materials. The guided waves generated by air-coupled ultrasound provide non-contact monitoring of in-plane stiffness anisotropy and high-contrast imaging of defects in a single-sided access configuration. Mapping of local fibre orientation in composites and residual stresses induced by plastic deformation in metals are implemented reliably with birefringent shear waves. Nonlinear ultrasound is shown to be sensitive to incipient fatigue in metals and applicable to imaging of a wide range of defects that might be produced during manufacturing, processing, and operation of aerospace materials and components.


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    Title :

    Characterization of aerospace materials by using air-coupled guided waves, birefringent and nonlinear ultrasound


    Additional title:

    Charakterisierung von Raumfahrtkomponenten mittels Luft angekoppelten geführten Schallwellen, Doppelbrechung und nicht linearem Ultraschall


    Contributors:
    Solodov, Igor (author) / Busse, Gerd (author)


    Publication date :

    2008


    Size :

    10 Seiten, 11 Bilder, 5 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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