FATIGUE CRACK GROWTH RATE AND CRACK INITIATION AND FRACTURE LIFE UNDER MIXED MODES I AND II.

Toshimitsu Yokobori, Takeo Yokobori, Kenji Ishii, Kiyoshi Sato, Kazuo Shyoji

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    The mixed mode fatigue testing was carried out by applying the same phase and arbitrary ratio of torsional loading to tensile loading. The threshold stress intensity factor and fatigue fracture toughness decreased with an increase of DELTA K// PI //0 for initial crack. On the other hand, the stable fatigue crack growth region was found to be divided into PI //a region of low growth rate and PI //b region of accelerated fatigue crack growth rate. Both regions were influenced by mixed mode loading. The crack initiation life N//i and propagation life N//f had similar characteristics.

    Original languageEnglish
    Pages (from-to)930-935
    Number of pages6
    JournalZairyo/Journal of the Society of Materials Science, Japan
    Volume35
    Issue number395
    Publication statusPublished - 1986 Aug

    ASJC Scopus subject areas

    • Chemical Engineering (miscellaneous)
    • Metals and Alloys
    • Polymers and Plastics

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