Present status of the FRACTESUS project: round robin on unirradiated materials

Giovanni Bonny, Eberhard Altstadt, Pentti Arffman, Sergio Cicero, Florian Obermeier, Tom Petit, H. Swan, Rachid Chaouadi, Ermile Gaganidze, B. Hargitai, M. Kolluri, Radim Kopriva, P. Rozsahegyi, Marta Serrano-Garcia, Philippe Spätig, Inge Uytdenhouwen, H. Wilcox, Masato Yamamoto

    Research outputpeer-review


    The present paper provides a summary of an inter-laboratory round robin on the fracture toughness testing and Master Curve application on unirradiated materials. First, a validation exercise was performed on the analysis of a given forcedisplacement curve. Then, a validation exercise was performed on the application of the Master Curve procedure on a given data set of fracture toughness results. Finally, the preliminary results of the Master Curve application on mini compact tension (MC(T)) specimens by 13 different labs on six different materials (four base materials and two welds) are presented. The validation exercise on fracture toughness data evaluation showed the need for a uniform conversion from front face displacement to load line displacement. The validation exercise on application of the Master Curve approach to obtain the reference temperature proved the equivalence between the T0TEM software and in-house developed softwares. The interlaboratory round robin showed the equivalence between T0 obtained by MC(T) and larger specimens, except for A533B JRQ and 73W. The reasons for the deviations of A533B JRQ and 73W are under investigation. As a general comment, it can be stated that the results from MC(T) specimens often indicate material inhomogeneity as compared to the result from larger specimens. This is likely the consequence of the small sampling volume of the MC(T) specimens.
    Original languageEnglish
    Title of host publicationCodes and Standards
    Subtitle of host publicationJuly 16-21, 2023, Atlanta, Georgia
    PublisherASME - The American Society of Mechanical Engineers
    Number of pages9
    ISBN (Electronic)9780791887448
    StatePublished - 2023
    Event2023 - PVP: Pressure Vessels & Piping Conference - The Westin Peachtree Plaza, Atlanta
    Duration: 16 Jul 202321 Jul 2023

    Publication series

    NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
    ISSN (Print)0277-027X


    Conference2023 - PVP
    Country/TerritoryUnited States
    Internet address

    ASJC Scopus subject areas

    • Mechanical Engineering

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