Experimental investigation of plastic deformations before a granular avalanche.

@article{Amon2013ExperimentalIO,
  title={Experimental investigation of plastic deformations before a granular avalanche.},
  author={A. Saint Amon and Roman Bertoni and Alesya Mikhailovskaya},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2013},
  volume={87 1},
  pages={
          012204
        }
}
We present an experimental study of the deformation inside a granular material that is progressively tilted. We investigate the deformation before the avalanche with a spatially resolved diffusive wave spectroscopy setup. At the beginning of the inclination process, we first observe localized and isolated events in the bulk, with a density which decreases with the depth. As the angle of inclination increases, series of microfailures occur periodically in the bulk, and finally a granular… CONTINUE READING

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