The aim of the work is to determine the approximate value of the stress intensity factor for a cylindrical sample with a circumferential crack. Irwin’s idea to extrapolate formulas for stress concentration at the notch top obtained by Neuber for a body of revolution with an annular recess of a hyperbolic shape under conditions of uniaxial tension is used. The calculations were carried out for the particular case of an infinitely small root radius of the notch (crack) on the experimental data basis. The structural fracture criterion is used to estimate the sample size (ligament diameter and outer diameter). The size of the minimum (in the crack plane) cross-section of a cylindrical sample is calculated from the condition of matching the structural criterion with Irwin’s fracture criterion. The diameter of the sample itself is proposed to be determined based on the requirement of the stress intensity factors’ equality for a deep crack in a body of revolution and a surface crack in a half-plane. The assessment of fracture toughness is given on the example of beinitic steel of strength class 650, which is used, in particular, for the construction of trunk pipelines. It is shown that, in accordance with the structural approach, the ratio of the ligament diameters and the sample is not predetermined, but is determined by sequentially selecting.


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    Titel :

    Stress Intensity Factor for Cylindrical Specimen with External Circular Crack Under Tension


    Weitere Titelangaben:

    Lect. Notes in Networks, Syst.


    Beteiligte:
    Manakov, Aleksey (Herausgeber:in) / Edigarian, Arkadii (Herausgeber:in) / Smirnov, Vladimir (Autor:in) / Vidyushenkov, Sergey (Autor:in)

    Kongress:

    International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021



    Erscheinungsdatum :

    2022-03-19


    Format / Umfang :

    10 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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