Abstract: Three experiments were conducted with 1-lb explosive spheres
embedded in large concrete cylinders with flatpack stress gages and
Dremin loop velocity gages surrounding the charge. In two tests, the
charge was far from the boundaries and was fully contained. Radial
stresses and velocities attenuated with range by approximately 1/r2.5. In
the third test the charge was near the top surface of the concrete cylinder,
and reflections perturbed the sphericity of the flow.
