Interaction of periodic arrays of wing cracks

Juha Kuutti (Corresponding Author), Kari Kolari

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    Abstract

    A method for evaluating the interaction of wing cracks in 2-D and 3-D is presented. The method utilizes the assumption that the wing crack can be represented by its extensions and the interaction is solved using a superposition method presented by Kachanov. The method is applied to arrays of parallel initial cracks to determine the critical crack array orientations and assess whether the coalescence of closely-spaced small cracks causing a shear-like failure observed in 2-D is possible in 3-D. The results show that the shear failure can be achieved also in 3-D, but not with such an instability as in 2-D.
    Original languageEnglish
    Pages (from-to)17-30
    Number of pages14
    JournalEngineering Fracture Mechanics
    Volume200
    DOIs
    Publication statusPublished - Sep 2018
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • brittle fracture
    • shear fracture
    • crack interaction
    • wing crack

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