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    Volume 46, Issue 5 (February 2018)

    Effect of Impact Energy in the Esso Test (Part 1: Basic Experiments and Validation of FEM Analysis)

    (Received 19 January 2017; accepted 20 April 2017)

    Published Online: 02 February 2018

    CODEN: JTEVAB

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    Abstract

    To enhance the integrity of manufactured steel plate structures, the arrest toughness is an important parameter and is actually required in several structural applications, e.g., shipbuilding, tankage, and power plants, where brittle cracking occurs. Currently, the Esso test is the most popular evaluation method for arrest toughness. In the Esso test, a notch located at the top of the specimen is forced open by impact energy. Generally, it is expected that the arrest toughness may be affected by impact. However, the effect of the impact has not been considered in the evaluation methods so far. Furthermore, the impact energy is selected arbitrarily and differs depending on the test organization. Considering the current situation, it is quite important to evaluate the effect of impact on the obtained results. In the present work, in order to clarify the effect of impact on the arrest toughness evaluation, changes in the driving force at the running crack tip are examined by finite element method (FEM) analyses including impact. In particular, the fundamental behavior of the specimen due to impact and the validation of FEM analysis are investigated.

    Author Information:

    Kawabata, Tomoya
    The University of Tokyo, Bunkyo, Tokyo

    Kaneko, Masahito
    Kobe Steel, Ltd., Kakogawa, Hyogo

    Aihara, Shuji
    The University of Tokyo, Bunkyo, Tokyo


    Stock #: JTE20170045

    ISSN:0090-3973

    DOI: 10.1520/JTE20170045

    Author
    Title Effect of Impact Energy in the Esso Test (Part 1: Basic Experiments and Validation of FEM Analysis)
    Symposium ,
    Committee E08