The effect of multi-axial stress component on creep crack growth rate concerning structural brittleness

Toshimitsu Yokobori, R. Sugiura, M. Tabuchi, A. Fuji, T. Adachi, T. Yokobori

    研究成果: Conference contribution

    21 被引用数 (Scopus)

    抄録

    A circular notched round bar specimen produces multi-axial stress field when uni-axial stress is applied in the axial direction. This stress field is produced in practical component structure. Therefore the characterization of creep crack growth rate under this condition is important for practical use. In this paper, developed 12Cr ferritic heat resistant steel was noticed. High temperature creep crack growth tests were conducted for a circular notched specimen for 12Cr ferritic heat resistant steel. And in order to investigate multi-axial stress state of a circular notched specimen, we have conducted 3D FEM analysis. The stress multiaxiality of a circular notched specimen increased as compare with that of CT specimen. Q* parameter which predicts creep crack growth rate is derived for this specimen. On the bases of this Q* parameter, the algorithm of predicting the life of creep growth is proposed.

    本文言語English
    ホスト出版物のタイトル11th International Conference on Fracture 2005, ICF11
    ページ1663-1668
    ページ数6
    出版ステータスPublished - 2005 12 1
    イベント11th International Conference on Fracture 2005, ICF11 - Turin, Italy
    継続期間: 2005 3 202005 3 25

    出版物シリーズ

    名前11th International Conference on Fracture 2005, ICF11
    3

    Other

    Other11th International Conference on Fracture 2005, ICF11
    CountryItaly
    CityTurin
    Period05/3/2005/3/25

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology

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