Theory based statistical interpretation of brittle fracture toughness of reactor pressure vessel steel 15XMφA and its welds

Kim Wallin (Corresponding Author), Kari Törrönen, Ralf Ahlstrand, Boris Timofeev, Vaklav Rybin, Vladimir Nikolaev, Aleksandr Morozov

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    The reliability of safety analysis of nuclear reactor pressure vessels is imperatively dependent upon the reliability of the fracture toughness values used in the analysis. Normally, existing fracture toughness results are analyzed with standard statistical means making use of empirically defined distribution functions for the fracture toughness. Recent developments in the theoretical modelling of cleavage fracture initiation have evolved a sounder statistical description of the macroscopic fracture toughness. It has thus become possible to make a theoretical interpretation of the scatter in brittle fracture toughness results. Here, the theoretical relations are applied to the statistical analysis of brittle fracture toughness results for the reactor pressure vessel steel 15X2M-phi-A and its welds. Based on the analysis, theoretical statistical reference curves for the steels are presented and compared to the presently used standard reference curves.
    Original languageEnglish
    Pages (from-to)239-246
    Number of pages8
    JournalNuclear Engineering and Design
    Volume135
    Issue number2
    DOIs
    Publication statusPublished - 1992
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    brittle fracture
    pressure vessels
    fracture toughness
    Brittle fracture
    Steel structures
    fracture strength
    Fracture toughness
    Welds
    vessel
    steel
    reactors
    steels
    Statistical methods
    fracture initiation
    Steel
    nuclear reactors
    curves
    Nuclear reactors
    Pressure vessels
    statistical analysis

    Keywords

    • welding

    Cite this

    Wallin, Kim ; Törrönen, Kari ; Ahlstrand, Ralf ; Timofeev, Boris ; Rybin, Vaklav ; Nikolaev, Vladimir ; Morozov, Aleksandr. / Theory based statistical interpretation of brittle fracture toughness of reactor pressure vessel steel 15XMφA and its welds. In: Nuclear Engineering and Design. 1992 ; Vol. 135, No. 2. pp. 239-246.
    @article{42bedeb79da740da99f750d9366de366,
    title = "Theory based statistical interpretation of brittle fracture toughness of reactor pressure vessel steel 15XMφA and its welds",
    abstract = "The reliability of safety analysis of nuclear reactor pressure vessels is imperatively dependent upon the reliability of the fracture toughness values used in the analysis. Normally, existing fracture toughness results are analyzed with standard statistical means making use of empirically defined distribution functions for the fracture toughness. Recent developments in the theoretical modelling of cleavage fracture initiation have evolved a sounder statistical description of the macroscopic fracture toughness. It has thus become possible to make a theoretical interpretation of the scatter in brittle fracture toughness results. Here, the theoretical relations are applied to the statistical analysis of brittle fracture toughness results for the reactor pressure vessel steel 15X2M-phi-A and its welds. Based on the analysis, theoretical statistical reference curves for the steels are presented and compared to the presently used standard reference curves.",
    keywords = "welding",
    author = "Kim Wallin and Kari T{\"o}rr{\"o}nen and Ralf Ahlstrand and Boris Timofeev and Vaklav Rybin and Vladimir Nikolaev and Aleksandr Morozov",
    note = "Project code: MET00132",
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    language = "English",
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    Theory based statistical interpretation of brittle fracture toughness of reactor pressure vessel steel 15XMφA and its welds. / Wallin, Kim (Corresponding Author); Törrönen, Kari; Ahlstrand, Ralf; Timofeev, Boris; Rybin, Vaklav; Nikolaev, Vladimir; Morozov, Aleksandr.

    In: Nuclear Engineering and Design, Vol. 135, No. 2, 1992, p. 239-246.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Theory based statistical interpretation of brittle fracture toughness of reactor pressure vessel steel 15XMφA and its welds

    AU - Wallin, Kim

    AU - Törrönen, Kari

    AU - Ahlstrand, Ralf

    AU - Timofeev, Boris

    AU - Rybin, Vaklav

    AU - Nikolaev, Vladimir

    AU - Morozov, Aleksandr

    N1 - Project code: MET00132

    PY - 1992

    Y1 - 1992

    N2 - The reliability of safety analysis of nuclear reactor pressure vessels is imperatively dependent upon the reliability of the fracture toughness values used in the analysis. Normally, existing fracture toughness results are analyzed with standard statistical means making use of empirically defined distribution functions for the fracture toughness. Recent developments in the theoretical modelling of cleavage fracture initiation have evolved a sounder statistical description of the macroscopic fracture toughness. It has thus become possible to make a theoretical interpretation of the scatter in brittle fracture toughness results. Here, the theoretical relations are applied to the statistical analysis of brittle fracture toughness results for the reactor pressure vessel steel 15X2M-phi-A and its welds. Based on the analysis, theoretical statistical reference curves for the steels are presented and compared to the presently used standard reference curves.

    AB - The reliability of safety analysis of nuclear reactor pressure vessels is imperatively dependent upon the reliability of the fracture toughness values used in the analysis. Normally, existing fracture toughness results are analyzed with standard statistical means making use of empirically defined distribution functions for the fracture toughness. Recent developments in the theoretical modelling of cleavage fracture initiation have evolved a sounder statistical description of the macroscopic fracture toughness. It has thus become possible to make a theoretical interpretation of the scatter in brittle fracture toughness results. Here, the theoretical relations are applied to the statistical analysis of brittle fracture toughness results for the reactor pressure vessel steel 15X2M-phi-A and its welds. Based on the analysis, theoretical statistical reference curves for the steels are presented and compared to the presently used standard reference curves.

    KW - welding

    U2 - 10.1016/0029-5493(92)90225-K

    DO - 10.1016/0029-5493(92)90225-K

    M3 - Article

    VL - 135

    SP - 239

    EP - 246

    JO - Nuclear Engineering and Design

    JF - Nuclear Engineering and Design

    SN - 0029-5493

    IS - 2

    ER -