Impact Initiated Reactions in Intermetallic-Forming Reactive Materials Systems: Instrumented Experiments Meso-Scale Simulations - (PPT)

摘要

Increases in shock velocity and expanded P-V product states provide evidence of "shock-induced" reactions in flake-Ni & Al, but not in equiaxed Ni-Al powder mixtures. Meso-scale numerical simulations illustrate importance of mechano-chemical processes, with morphology influencing deformation, mixing, and shock-propagation characteristics. Differential in reactant intrinsic properties (e.g., strength) can be offset by adjusting extrinsic properties, e.g., shape/size and volumetric distribution of reactants for impact-initiated reactions.