AI Article Synopsis
- - The study reveals the intricate and varying nature of plastic flow by mapping dislocation avalanches in an ice crystal during creep deformation using acoustic emission analysis.
- - Analysis indicates that these dislocation avalanches form clusters following a fractal pattern, suggesting a connection between their spatial and temporal occurrences.
- - The findings propose that the closer two avalanches happen in time, the more likely they are to occur near each other in space, potentially leading to a self-organizing behavior in these clusters.
Article Abstract
There is growing evidence for the complex, intermittent, and heterogeneous character of plastic flow. Here we report a three-dimensional mapping of dislocation avalanches during creep deformation of an ice crystal, from a multiple-transducers acoustic emission analysis. Correlation analysis shows that dislocation avalanches are spatially clustered according to a fractal pattern and that the closer in time two avalanches are, the larger the probability is that they will be closer in space. Such a space/time coupling may contribute to the self-organization of the avalanches into a clustered pattern.
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| http://dx.doi.org/10.1126/science.1079312 | DOI Listing |
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