Single overload effect in short crack

Tomoe Sudo, Masanobu Kubota, Yoshiyuki Kondo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The effect of single overload on the retardation of fatigue crack propagation and crack arrest was examined on short crack less than a few hundred microns. The effect of stress ratio of baseline load was also investigated. The variation of crack closure stress caused by overload was measured. The retardation occurred even in short crack, which could be explained by the increase of crack closure stress caused by overload. The baseline stress ratio also affected the retardation. Retardation occurred even in 50 μm crack for baseline stress ratio R = 0. In the case of R = -1, however, no retardation occurred in short crack less than 100 μm since the increase of crack closure stress was restrained by the compressive stress of baseline load.

    Original languageEnglish
    Title of host publication17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
    Pages1024-1031
    Number of pages8
    Volume2
    Publication statusPublished - 2008
    Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
    Duration: Sep 2 2008Sep 5 2008

    Other

    Other17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
    CountryCzech Republic
    CityBrno
    Period9/2/089/5/08

    All Science Journal Classification (ASJC) codes

    • Civil and Structural Engineering

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