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    Volume 5, Issue 3 (December 2016)

    Special Issue Paper

    Crack-Closure Measurements in Low-Cycle Fatigue With Digital Image Correlation

    (Received 19 December 2015; accepted 13 July 2016)

    Published Online: 06 December 2016

    CODEN: MPCACD

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    Abstract

    In this work, an experimental campaign devoted to measure closure levels onto specimens subjected to low-cycle fatigue (LCF) conditions is described. Two different straining conditions were investigated (i.e., R = −1 and R = 0.5). The measurements of σop, crack-opening stresses, were carried out by adopting the concept of “crack-tip opening displacements” and “local strain cycles.” However, instead of the original strain gauges measurements above the plane of the propagating crack, the strain cycles were measured by DIC in proximity of the crack tip. Experimental results were compared to those provided by the analytical model proposed by Newman.


    Author Information:

    Rabbolini, S.
    Dept. of Mechanical Engineering, Politecnico di Milano, Milan,

    Beretta, S.
    Dept. of Mechanical Engineering, Politecnico di Milano, Milan,

    Foletti, S.
    Dept. of Mechanical Engineering, Politecnico di Milano, Milan,

    Rusconi, L.
    Dept. of Mechanical Engineering, Politecnico di Milano, Milan,


    Stock #: MPC20150076

    ISSN:2165-3992

    DOI: 10.1520/MPC20150076

    Author
    Title Crack-Closure Measurements in Low-Cycle Fatigue With Digital Image Correlation
    Symposium ,
    Committee E08