Experimental and Modeling Analysis of Detonation in a Confined Circular Arc of DAAF-Based Explosive

Detonation models for high explosives are typically calibrated from experiments with simple charge geometry, such as cylinders and slabs, which may be unconfined or confined. Applying these models to a geometry where the detonation wave must turn due the shape of the charge can provide assurance that the model can predict detonation performance in more complex systems. Here, we describe a newly developed test consisting of a circular arc of a 95% DAAF and 5% FK-800 explosive confined on the inner and outer surfaces by 2 mm thick titanium alloy sheets. Utilizing radiography from the LANL pRad facility, 21 images of the arc detonating and driving the titanium sheets outward were captured. In addition, 16 PDV probes were used to measure the motion of the inner confiner plate. Here, we show these results, their analysis, and compare them to model predictions.