Volume 42, Issue 3 (May 2014)

    A Novel Non-Destructive Evaluation (NDE) Technique Using Coplanar Capacitive Imaging Probes

    (Received 21 December 2012; accepted 24 September 2013)

    Published Online: 2013

    CODEN: JTEOAD

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    Abstract

    A novel NDE technique, known as capacitive imaging (CI), is introduced in this work. The CI approach uses a coplanar probe with two or more electrodes in air to produce a quasi-static electric field distribution within the material. The capacitive coupling allows this technique to detect both surface and hidden defect in insulating materials, and provide indications of surface profile of conducting materials. Scanning the electrodes over the material can form an image according to the changes in the output voltage from the coplanar CI probe. In this work, a detailed description of the CI technique is presented, including the theory, modes of operation, instrumentation, and some preliminary experimental results.


    Author Information:

    Yin, Xiaokang
    Center for Offshore Engineering and Safety Technology, China Univ. of Petroleum, Qingdao,

    Li, Wei
    Center for Offshore Engineering and Safety Technology, China Univ. of Petroleum, Qingdao,


    Stock #: JTE20120360

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120360

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    Author
    Title A Novel Non-Destructive Evaluation (NDE) Technique Using Coplanar Capacitive Imaging Probes
    Symposium , 0000-00-00
    Committee D09