Question: A dislocation segment is pinned by two obstacles at a distance of 1 0 m and acting as a Frank - Read source for dislocations.

A dislocation segment is pinned by two obstacles at a distance of 10m and acting as a Frank-
Read source for dislocations. These dislocations are moving on a slip plane and getting piled-up
against a barrier further. Calculate the back-stress required from dislocation pile-up to deactivate
this dislocation source. Given: b=0.25nm;G=40GPa
A dislocation segment is pinned by two obstacles

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