Effect of stress components on fatigue crack growth rate under multiaxial stress condition

Toshimitsu A. Yokobori, Takeshi Isogai, Takeo Yokobori, Yukihisa Koizumi

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Multiaxial fatigue tests were carried out to investigate the effect of stress components (Δσ, Δτ, σst, τst) on fatigue crack growth. The test method was the combined tension and tortion one in phase loading by using thin-walled hollow cylindrical specimens with pre-cracks. The experiments were carried out under the condition of equal equivalent stress amplitude, Δσeq=√Δσ2 + 3Δτ2 Under the condition of mixed modes, the fatigue crack growth rate increases remarkably with increasing stress ratio. This characteristics is due to the effect of static tensile stress σst on Δτ. In this paper, the effect of static tensile stress was incorporated in the constitutive equation of fatigue crack growth rate under the mixed mode fatigue condition of Δσ and Δτ. Then, the following constitutive equation of fatigue crack growth rate including the effects of Δσ, Δτ, σst and τst was obtained.

    Original languageEnglish
    Pages (from-to)1106-1112
    Number of pages7
    JournalZairyo/Journal of the Society of Materials Science, Japan
    Volume39
    Issue number443
    Publication statusPublished - 1990 Aug

    ASJC Scopus subject areas

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

    Fingerprint Dive into the research topics of 'Effect of stress components on fatigue crack growth rate under multiaxial stress condition'. Together they form a unique fingerprint.

    Cite this