Our primary focus in this to apply the concept of cohesive zone models to link atomistic effect within a continuum based multi-scale model. We have used this approach to consider the effect of interfaces in carbon nanotubes on the properties of CNT based polymer matrix composites.
The primary focus of our research is to understand the ballistic behavior of composites. It is shown that the shock response of composites is quite different from that of the metals, and the presence of heterogeneous interfaces in composites can be attributed to this fact. The interfaces cause multiple scattering, and the magnitude of scattering depends on the level of heterogeneity as indicated by impedance mismatch. In this research work ...
The issues in this research focused on the understanding the chemical evolution (diffusional) process at the interface, developing a mechanistic model or an interface based on stress or energy failure criterion, and studying the effect of interface properties on the performance of the composites. The approach involved both experimental and computational components, a link between the evolution of chemistry and geometry of the reaction zone and the interfacial properties. Microstructural ...
In this work, superplastic deformation were studied at atomistic, mesoscopic and macroscopic levels with a special focus on the former two. At the atomistic level, we studied the energy and structure of symmetric tilt boundaries and examined the energy barriers during grain boundary sliding of Aluminum bicrystal. We also studied the effect of temperature and impurity atoms on the structure, energy and deformation of grain boundary sliding. ...
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