Small Scale Yielding: Meaning Explained

[sara_87]

Homework Statement

Can someone please explain to me the meaning of the term 'small scale yielding'?

Homework Equations

The Attempt at a Solution

I know it's in the field of fracture mechnics and has something to do with the stress at the crack tip but i don't have any idea what it means.

Thank you

 

[funnybunny123]

small scale yeilding is the idea that non-linear effects such as crack tip plasticity, blunting and micro defects are contained within the zone characterized by the linear elastic region