Controlling crack dynamics using drop impact on cold substrates

Abstract eng:
We perform water drop impact experiments on a solid cold substrate for temperature ranging from 20 to −60◦ C. Different behaviors are observed depending on the impact parameters and the substrate temperature. In particular, cracks are observed when the solid substrate is cold enough. We identify different crack propagation corresponding to dynamical fractures at intermediate low temperature and quasi-static fracture propagation at very low temperature. A phase diagram is obtained that is interpreted using classical fracture theory.

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