Three-dimensional mapping of dislocation avalanches: clustering and space/time coupling.
Science
; 299(5603): 89-92, 2003 Jan 03.
Article
en En
| MEDLINE
| ID: mdl-12511646
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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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Science
Año:
2003
Tipo del documento:
Article
País de afiliación:
Francia