- #1

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## Main Question or Discussion Point

I don't know how to solve this kind of problem:

Given a crystal and its volume V. This Crystal is subjected to a shear stress making a slip plane (h k l ) in a slip direction [h k l]. Given also the lattice parameter a and slip plane spacing L, and the edge dislocation a/2 that passed halfway through the crystal on every fourth plane.

The question is what is the shear strain?

So to solved this problem i used this equation

y(shear strain) = pbX

p= dislocation density, b =burger vector, and X= average dislocation

where p = L/V and b =a/2

my problem is how to compute X?

Given a crystal and its volume V. This Crystal is subjected to a shear stress making a slip plane (h k l ) in a slip direction [h k l]. Given also the lattice parameter a and slip plane spacing L, and the edge dislocation a/2 that passed halfway through the crystal on every fourth plane.

The question is what is the shear strain?

So to solved this problem i used this equation

y(shear strain) = pbX

p= dislocation density, b =burger vector, and X= average dislocation

where p = L/V and b =a/2

my problem is how to compute X?