A study was made of an elastic dislocation which was close to a material interface that had a limited strength in shear. A plane-strain boundary-value problem was formulated, and an exact solution was obtained for the force on the dislocation as a function of the distance from the interface. If the dislocation was close enough to the interface, its stress field caused irreversible slip across the interface. This slip in turn induced an attractive force on the dislocation. In the case of an edge dislocation with its Burgers vector normal to the interface, it was found that the dislocation had a stable equilibrium position at a small distance from the interface.

The Force on a Dislocation Near a Weakly Bonded Interface. J.A.Hurtado, L.B.Freund: Journal of Elasticity, 1999, 52[2], 167-80