Abstract
We have found an oscillating instability of fast-running cracks in thin rubber sheets. A well defined transition from straight to wavy cracks occurs as the amount of biaxial strain increases. Measurements of the amplitude and wavelength of the oscillation near the onset of this instability indicate that the instability is a Hopf bifurcation.
- Received 6 July 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.014304
©2001 American Physical Society