Scale-free bursting activity in shrinkage induced cracking
Roland Szatmári,
Akio Nakahara,
So Kitsunezaki
et al.
Abstract:Based on computer simulations of a realistic discrete element model we demonstrate that shrinkage induced cracking of thin layers of heterogeneous materials, generating spectacular crack patterns, proceeds in bursts. These crackling pulses are characterized by scale free distributions of size and duration, however, with non-universal exponents depending on the system size and shrinking rate. On the contrary, local avalanches composed of micro-cracking events with temporal and spatial correlation are found to o… Show more
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