Plastic Relaxation at Crack Tip: Micromechanical Analysis
2001 年 42 巻 1 号 p. 20-27
詳細
2001 年 42 巻 1 号 p. 20-27
The influence of a plastic zone developed at a crack tip is analyzed under a micromechanical point of view. Mechanical interaction is described in terms of crack shielding caused by the stress intensity factor induced by a dislocation loop in the three opening modes. Numerical calculations and experimentally studied configurations quantify the total relaxation rate induced by this dislocation loop.
