Constant velocity crack propagation––dependence on remote load

It is argued that continuum scaling applies for the dissipative region at a fast running crack edge. Then, a self-similar solution is possible for an expanding crack in a large plate. Analysis of this solution not only shows that a constant terminal velocity is reached, but also that this velocity is dependent on the remote load. However, the magnitude of this velocity may not be uniquely related to the remote load, but also dependent on features of the acceleration phase.