THE EFFECT OF EXTERNAL DISLOCATIONS ON THE CRACK TIP PROCESS

The authors discuss the influence of external dislocations on the crack tip process mainly using the superdislocation pair model. They present a detailed comparison of dislocations emitted from external sources and dislocations emitted from the crack source. The results show that external dislocations play a very significant role in the crack tip process.

[1]  S. J. Zhou,et al.  AN IMAGE FORCE EXPRESSION FOR THE DISLOCATION NEAR A CRACK , 1988 .

[2]  Y. Chou,et al.  Shielding of crack tips by inclined pileups of dislocations , 1988 .

[3]  S. Ohr.  Antishielding dislocations at a crack tip , 1987 .

[4]  K. Higashida,et al.  Dislocation distribution around a crack tip and the fracture toughness in NaCl crystals , 1987 .

[5]  S. Ohr.  Electron microscope studies of dislocation emission from cracks , 1986 .

[6]  J.C.M. Li.  Computer simulation of dislocations emitted from a crack , 1986 .

[7]  S. Burns.  Crack tip dislocation nucleation observations in bulk specimens , 1986 .

[8]  S. Ohr.  An electron microscope study of crack tip deformation and its impact on the dislocation theory of fracture , 1985 .

[9]  S. Burns,et al.  Crack tip deformation in LiF single crystals , 1984 .

[10]  R. Thomson,et al.  The transition from an emitting to a cleaving crack , 1983 .

[11]  D. K. Bowen,et al.  Synchrotron X-ray fractography: A novel technique for fracture-surface analysis , 1983 .

[12]  C. Lung,et al.  The Dislocation Distribution Function in the Plastic Zone at a Crack Tip , 1983, May 16.

[13]  B. Majumdar,et al.  A Griffith crack shielded by a dislocation pile-up , 1983 .

[14]  S. Dai,et al.  Dislocation-free zone at the crack tip , 1982 .

[15]  B. Majumdar,et al.  Crack tip shielding--an elastic theory of dislocations and dislocation arrays near a sharp crack , 1981 .

[16]  James R. Rice,et al.  Ductile versus brittle behaviour of crystals , 1974 .