Оn the structural instabilities of shock loaded materials

Experimental examples of shock-induced structural instabilities in solids, which are nucleated in the process of multiscale dynamic deformation, are considered from the position of methods of registration. The criterion for nucleation of instability, which includes the particle velocity variation at the mesoscale, supposes that instability arises when rate of change of the velocity variation within the shock front becomes higher than rate of change of the mean particle velocity.