Interaction of periodic arrays of wing cracks

Juha Kuutti*, Kari Kolari

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

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
JournalEngineering Fracture Mechanics
Volume200
DOIs
Publication statusPublished - Sept 2018
MoE publication typeA1 Journal article-refereed

Funding

The research and the preparation of the manuscript have been supported by the Academy of Finland [grant 268925 ] and VTT Technical Research Centre of Finland.

Keywords

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

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