Velocity transition in the crack growth dynamics of filled elastomers: Contributions of nonlinear viscoelasticity

The crack growth dynamics of the carbon-black (CB) filled elastomers is studied experimentally and analyzed while focusing on both kinetics and crack tip profiles. The CB amounts are varied to change the mechanical properties of the elastomers. Static crack growth measurements simultaneously reveal the discontinuous-like transition of the crack growth rate vbetween the ``slow mode''...