Pressure measurements from internal/confined blast loading using C-4 charges

Two different internal diameters were used for the rigid steel cylinders, 400 mm and 200 mm. A single test series was performed using the 400 mm cylinder, using charge sizes 50 g, 65 g, 75 g, 100 g, 150 g, 200 g, 300 g, 400 g, 500 g of C-4 with two repetitions of each.

Two test series were performed on the 200 mm cylinder; 1) a series of four identical tests detonating 20 g C-4 to test repeatability, and 2) a series with charge sizes 10 g, 16 g, 20 g and 25 g with two repetitions of each, which also included additional external pressure sensors and a high-speed camera for shadowgraphy imaging. All listed charge sizes are without the detonator, which adds an equivalent of approximately 2 g to the charge.