期刊
GRANULAR MATTER
卷 16, 期 1, 页码 1-8出版社
SPRINGER
DOI: 10.1007/s10035-013-0477-x
关键词
Granular materials; Plane strain; Diffusing wave spectroscopy; Shear band
资金
- ANR STABINGRAM [2010-BLAN-0927-01]
- Region Bretagne MIDEMADE
We present an experimental apparatus specifically designed to investigate the precursors of failure in granular materials. A sample of granular material is placed between a latex membrane and a glass plate. A confining effective pressure is applied by applying vacuum to the sample. Displacement-controlled compression is applied in the vertical direction, while the specimen deforms in plane strain. A diffusing wave spectroscopy visualization setup gives access to the measurement of deformations near the glass plate. After describing the different parts of this experimental setup, we present a demonstration experiment where extremely small (of order ) heterogeneous strains are measured during the loading process.
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