PPT Slide

Then the overall shear strain would somewhere between 0 and b/L, the exact value being proportional to the fraction of the slip plane area that the dislocation has traversed. In moving a distance x, the dislocation has swept put x/L of its slip plane and the resulting shear strain is given by

If instead of one dislocation we had considered N dislocation, all moving an average distance x [ Fig 11-14], the resulting strain would be

(11.1)

(11.2)

Then the overall shear strain would somewhere between 0 and b/L, the exact value being proportional to the fraction of the slip plane area that the dislocation has traversed. In moving a distance x, the dislocation has swept put x/L of its slip plane and the resulting shear strain is given by