Lineared Inverse Scattering Methods in Elasticity for Shape Reconstruction of Defects

    Volume 36, Issue 2 (March 2008)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 4 January 2008

    Page Count: 7


    Gangfeng, Zheng
    College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology, Beijing,

    Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan,

    Bin, Wu
    College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology, Beijing,

    Cunfu, He
    College of Mechanical Engineering & Applied Electronics Technology, Beijing University of Technology, Beijing,

    (Received 30 January 2007; accepted 1 December 2007)

    Abstract

    Two linearized methods for the ultrasonic inversion are formulated for the shape reconstruction of defects in an elastic material. The methods are based on the elastodynamic inverse Born and Kirchhoff approximations. From the numerical analysis for two kinds of defects, it is verified that the Born inversion works well for volumetric defects and the Kirchhoff inversion for surface defects. Combination of two inversion methods leads to the separation of surface in a part from the volumetric part of the defect.


    Paper ID: JTE101032

    DOI: 10.1520/JTE101032

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    Author
    Title Lineared Inverse Scattering Methods in Elasticity for Shape Reconstruction of Defects
    Symposium , 0000-00-00
    Committee E07