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A Study of Crack Propagation in Alpha-Iron

  • M. F. Kanninen
  • P. C. Gehlen

Abstract

In previous attempts to simulate crack extension on a (100) plane in α-iron, it was not possible to induce the rupture of atomic bonds at the crack tip. The work reported here overcomes this deficiency by considering the crack front to be jogged. It is then found that an existing crack will heal or extend, depending on whether the stress-intensity factor is less or greater than a critical value. The results are in quantitative agreement with the critical stress-intensity factor determined indirectly in previous work and are consistent with the Griffith criterion for quasibrittle crack growth.

Keywords

Crack Front Crack Closure Linear Elastic Fracture Mechanic Strain Energy Release Crack Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1972

Authors and Affiliations

  • M. F. Kanninen
    • 1
  • P. C. Gehlen
    • 2
  1. 1.Applied Mathematics and Mechanics Division, Columbus LaboratoriesBattelleColumbusUSA
  2. 2.Battelle, Columbus LaboratoriesMetal Science GroupColumbusUSA

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