Brittle failure occurs with little to no plastic deformation before fracture.

Once this begins the material has entered a stage called plastic deformation.

A material's toughness is a factor of its ability to absorb energy during plastic deformation.

One proof is to match the broken halves, which should fit exactly since no plastic deformation has occurred.

Another con is that this plastic deformation can cause corresponding high points in the shaft surrounding the circular mark.

Such rapid flow cannot be accommodated by plastic deformation of the ice.

The criterion was introduced to deal with the plastic deformation of soils.

No plastic deformation is allowed at this level of a load.

The plastic deformation of the bar is retained throughout the process.

Now as metals become warmer, their resistance to further plastic deformation decreases.