Relationship of fatigue crack propagation to dislocation structure and slip geometry

Campbell Laird, Pedro Peralta

Research output: Contribution to journalArticlepeer-review


The mechanisms of fatigue crack propagation were briefly reviewed in relation to Professor McClintock's contributions to the early development of the field. The most securely established understanding has been obtained for those mechanism of propagation involving plasticity-induced geometrical changes to the crack tip during tensile and compressive straining (the plastic blunting process). The roles of more complex factors in controlling the kinetics of crack propagation, which cause the magnitude of the Paris exponent to exceed 2, remain to be elucidated. Recently obtained results revealing the interconnection between the slip behavior at the crack tip, the plastic blunting process and the dislocation structures present in the material before the crack encounters them were reported.

Original languageEnglish (US)
Pages (from-to)367-373
Number of pages7
JournalJisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS
Issue number2
StatePublished - Apr 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Computer Science Applications
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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