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    Volume 44, Issue 6 (November 2016)

    Evaluation and Comparison of Double Clip Gauge Method and Delta 5 Method for CTOD Measurement in SE(T) Specimens

    (Received 16 March 2015; accepted 16 September 2015)

    Published Online: 29 November 2016

    CODEN: JTEVAB

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    Abstract

    The experimental evaluation of the fracture toughness of line pipe steels and girth welds is increasingly performed through single edge notched tensile—SE(T)—testing. The notch constraint in these specimens closely matches that in pipes. This paper focused on the measurement of the crack tip opening displacement (CTOD). The double clip gauge method and the GKSS δ5 method were compared based on experimental tests on both welded and nonwelded specimens. A good correspondence between both techniques was observed. The δ5 method tended to result in a slightly lower estimation of crack driving force, which was explained by the difference between both CTOD definitions. Both techniques were concluded to be equivalent for the evaluation of CTOD in SE(T) specimens.


    Author Information:

    Van Minnebruggen, Koen
    Dept. of Construction and Production, Soete Laboratory, Ghent Univ., Zwijnaarde,

    Verstraete, Matthias
    Dept. of Construction and Production, Soete Laboratory, Ghent Univ., Zwijnaarde,

    Hertelé, Stijn
    Dept. of Construction and Production, Soete Laboratory, Ghent Univ., Zwijnaarde,

    De Waele, Wim
    Dept. of Construction and Production, Soete Laboratory, Ghent Univ., Zwijnaarde,


    Stock #: JTE20150127

    ISSN:0090-3973

    DOI: 10.1520/JTE20150127

    Author
    Title Evaluation and Comparison of Double Clip Gauge Method and Delta 5 Method for CTOD Measurement in SE(T) Specimens
    Symposium ,
    Committee E28