Volume 7, Issue 6 (November 1979)

    Determination of the Fracture-Energy Criterion JIc of Two Steels by Static and Dynamic Testing

    CODEN: JTEOAD

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    Abstract

    The fracture energy criterion JIc was determined on two carbon-manganese steels, SA-516-70 and SA-105-B, from a single specimen. A graphic method is proposed for verifying the validity of measured values of JIc. Static JIc and dynamic JIcD experiments on precracked Charpy V-notch specimens at ambient temperature enabled the observation of the effect of loading rate on the value of JIc. For these two steels, the effect of side grooves was detected only in dynamic testing. For SA-516-70 steel, JIcD > JIc, while JIcD > JIc for SA-105-B steel, because of transition temperature fracture behavior. For SA-516-70, static testing was performed on three-point bend specimens of different dimensions to determine the effect of geometrical parameters on the value of JIc. A ligament 1-cm long is the lower limit for the determination of JIc.


    Author Information:

    Nguyen-Duy, P
    Scientist and junior scientistmember of ASTM, Materials Science Directorate, Institute de Recherche de l'Hydro-Quebec, Varennes, Quebec

    Phélippeau, G
    Scientist and junior scientistmember of ASTM, Materials Science Directorate, Institute de Recherche de l'Hydro-Quebec, Varennes, Quebec


    Stock #: JTE11506J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11506J

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    Author
    Title Determination of the Fracture-Energy Criterion JIc of Two Steels by Static and Dynamic Testing
    Symposium , 0000-00-00
    Committee E08