Stress Distribution and Strain Mapping in Porous Granular Rocks (II)
The mechanical behaviour of porous granular rocks is highly complex due to the fact that they exhibit a multiscale interaction of three different phases: grains, cement and pores. Recent experiments at ISIS (ENGIN-X), as well as an ongoing experiment on SALSA, have proven that neutron diffraction scanning during in-situ loading tests can aid in the understanding of the (micro-)mechanisms that act during the deformation and eventually lead to failure of such materials. In the proposed experiment, which is a continuation of experiment 1-02-165 (no report submitted since it is ongoing at the time of writing), a new version of a plane-strain loading device will be used towards the complete assessment of the deformation mechanisms of granular materials than has previously been possible. More specifically, the new device will allow the neutron diffraction strain scanning measurements of the elastic crystallographic (grain) strains to be compared to the total strains, which will be acquired by the simultaneous use of Digital Image Correlation.
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Stefanos D. Athanasopoulos; Stephen A. Hall and PIRLING Thilo. (2018). Stress Distribution and Strain Mapping in Porous Granular Rocks (II). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-227
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