Granular materials and granular composites are ubiquitous in the natural and engineered world. The combination of differing materials properties of the grains and the filler allows for the properties to be altered via subtle changes in composition and filler-matrix properties.
However, given the heterogenous nature of such composites many engineers and scientists will be able to name between three and five damage mechanisms or processes which occur, normally starting with compression of the weaker component, in the composites, at lower stresses and finishing with the shattering of particles of the harder component at the highest stresses.
As a result of the multiple, overlapping mechanisms this can result in some complex phenomenological, semi-empirical models and lost of discussion.
With increased access to Synchrotron Sources, such as ESRF, the ability to probe these mechanisms in time resolved detail increases of knowledge of these complex materials. In this talk some examples of granular material beds and construction materials undergoing dynamic loading above the failure stress using facilities at ESRF, Grenoble, France, will be given. These will be presented in relation to other diagnostics with the combined data presenting a deep insght into the interplay of the damage processes.
These images were captured as part of the Shock-BAG collaboration at ESRF.