Interaction of periodic arrays of wing cracks

Juha Kuutti (Corresponding Author), Kari Kolari

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (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
Number of pages14
JournalEngineering Fracture Mechanics
Volume200
DOIs
Publication statusPublished - Sep 2018
MoE publication typeA1 Journal article-refereed

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Cracks
Coalescence

Keywords

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

Cite this

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title = "Interaction of periodic arrays of wing cracks",
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.",
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Interaction of periodic arrays of wing cracks. / Kuutti, Juha (Corresponding Author); Kolari, Kari.

In: Engineering Fracture Mechanics, Vol. 200, 09.2018, p. 17-30.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Kuutti, Juha

AU - Kolari, Kari

PY - 2018/9

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N2 - 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.

AB - 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.

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