A method was proposed for deducing the dislocation mobility from measurements of amplitude-dependent internal friction in a vibrating solid. The method was based upon the idea that to and fro motion of dislocations occurred during each period of steady-state vibration, and that this motion was impeded by friction that was due to randomly dispersed obstacles. It was found that the average dislocation velocities which were deduced from data on a Cu-Ni solid solution were consistent with those that were deduced by using an etch-pit technique.

Determination of Dislocation Mobility from Amplitude-Dependent Internal Friction. Y.Nishino, S.Asano: Physica Status Solidi A, 1995, 151[1], 83-91