Many aging pipelines and aircraft are suffering from corrosion and the corrosion patches are often inaccessible. There is therefore a need for a rapid, accurate, long range inspection technique to measure the remaining thickness in corrosion patches. Low-frequency guided wave tomography is a potentially attractive technique to rapidly evaluate the thickness of large sections of partially accessible structures. This paper demonstrates that in the low-frequency regime the ray theory may not be valid which compromises the use of any straight-ray tomography algorithm. This paper also shows, in simulations and experimentally, that the same frequency regime can be used to successfully reconstruct thickness reduction in plates with diffraction tomography.


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    Titel :

    Feasibility of low-frequency straight-ray guided wave tomography


    Weitere Titelangaben:

    Machbarkeit der Niederfrequenz-Tomographie mit gerichtet geführten Schallwellen


    Beteiligte:
    Belanger, P. (Autor:in) / Cawley, P. (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    8 Seiten, 8 Bilder, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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