Expressions for describing the critical stress intensity factor for edge dislocation dipoles emission under mode I and II loads were presented. The conditions for the crack tip radius increase in finite and semi-infinite cracks were examined.

Edge Dislocation Dipole Emission from a Blunt Crack Tip and its Morphological Effects. M.Huang, P.E.J.Rivera Díaz del Castillo, Z.Li: Scripta Materialia, 2006, 54[4], 649-53