Issue 50

K. Singh et alii, Frattura ed Integrità Strutturale, 50 (2019) 319-330; DOI: 10.3221/IGF-ESIS.50.27 330 c R Critical radius of curvature of dislocation to bypass the obstacle s R Dislocation curvature radius near obstacle on slip systems s l Average length of screw dislocation segment on slip system s D Obstacle diameter c L Critical length of kink pair min l Minimum/limiting value of the average length of screw dislocation segment k v Velocity of kink  Dislocation-loop annihilation parameter  Screw-loop interaction to produce dislocations  Shape parameter of Weibull distribution  Scale parameter of Weibull distribution w  Position parameter of Weibull distribution Λ Dislocation mean free path