TORSION TEST OF ICE SINGLE CRYSTAL
Screw dislocations are shearing the crystal from the external radius, where the stress is the highest, towards the symmetry axis.
A regular dislocation arrangement is observed with a regular spaced array : a pure torsion boundary.
The number of dislocation lines on the 3 activated slip systems is directly related to the applied momentum.
Ice crystals are interesting model materials for 3D4 modelling: it is easy to build large single crystals and plasticity is mostly confined in the basal slip systems of the HCP structure.
Screw dislocations are shearing the crystal from the external radius, where the stress is the highest, towards the symmetry axis.
A regular dislocation arrangement is observed with a regular spaced array : a pure torsion boundary.
The number of dislocation lines on the 3 activated slip systems is directly related to the applied momentum.
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