Energy exchange in coupled interactions between a shock wave and metallic plates

An experimental investigation was carried out to consider the partitioning of energy deposited by a planar shock impinging on thin metallic plates mounted at the end wall of a large scale shock tube. A split-view time-dependent digital image correlation technique was employed to capture the three-dimensional motion of the external surface of the specimens. Steel plate and aluminum plates were tested in the present work. The experimental results were analyzed by using the control volume approach with moving boundaries and the presence of discontinuities. The energy depositions by the flow on the specimens were examined and discussed in two different frames of reference to demonstrate that energy is not Galilean invariant. It was found that most of the deposited energy is spent on plastic deformation of the plates followed by the kinetic energy, which reached significant values only in the initial stages of the shock-material interaction.