Volume 3, Issue 6 (June 2006)

    Detection of Crack Initiation by Observations of Free Surface Condition

    (Received 7 April 2005; accepted 12 August 2005)

    Published Online: 2006

    CODEN: JAIOAD

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    Abstract

    A simple method to detect crack initiation is presented. By polishing the surface of carbon steel structure properly and using the Lüders bands and orange peel as indicators for damage, it is possible to predict crack initiation with the naked eye. The initiation of the Lüders bands is the yellow light of the crack initiation, for instance, in the traffic signal, and orange peel is the red light. The relationship between the observed surface condition and the cyclic stress-strain characteristics is discussed.


    Author Information:

    Ichinose, K
    Professor, Tokyo Denki University, Tokyo,

    Yoshida, S
    Associate Professor, Southeastern Louisiana University, Hammond, LA

    Gomi, K
    Assistant Professor, Tokyo Denki University, Tokyo,

    Taniuchi, K
    Former Professor, Meiji University,

    Fukuda, K
    Professor, Tokyo National College of Technology, Tokyo,

    Ishii, H
    Graduate Student, Tokyo Denki University, Tokyo,


    Stock #: JAI13189

    ISSN: 1546-962X

    DOI: 10.1520/JAI13189

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    Author
    Title Detection of Crack Initiation by Observations of Free Surface Condition
    Symposium Fatigue and Fracture Mechanics: 35th Volume, 2005-05-20
    Committee E08