Crack Detection by Digital Image Processing

Janus Lyngbye, Rune Brincker

    Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

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    Abstract

    It is described how digital image processing is used for measuring the length of fatigue cracks. The system is installed in a Personal, Computer equipped with image processing hardware and performs automated measuring on plane metal specimens used in fatigue testing. Normally one can not achieve a resolution better than that of the image processing equipment. To overcome this problem an extrapolation technique is used resulting in a better resolution. The system was tested on a specimen loaded with different loads. The error σa was less than 0.031 mm, which is of the same size as human measuring with a microscope.

    OriginalsprogEngelsk
    UdgivelsesstedAalborg
    ForlagDept. of Building Technology and Structural Engineering, Aalborg University
    Antal sider9
    StatusUdgivet - 1990
    NavnFracture and Dynamics
    Nummer23
    Vol/bindR9018
    ISSN0902-7513

    Bibliografisk note

    PDF for print: 14 pp.

    Emneord

    • Crack Detections
    • Fatigue Cracks
    • Digital Image Processing
    • DIP
    • Crack Length Measurements

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