Abstract
Pressure‐shear waves involving changes in both normal and shear tractions on planes perpendicular to the direction of propagation are being used to study the shear strength of materials shock loaded to high pressures. The predominantly shear waves generated in these experiments are particularly sensitive to the plastic flow characteristics of the material. This talk presents an overview of theory and experiment related to pressure‐shear waves. Solutions are described for boundary conditions corresponding to those of impact of two parallel plates with the direction of approach inclined to the direction of the normal of the impact plane. Experiments for generating pressure‐shear waves by such impacts of skewed plates are described. Various techniques for monitoring pressure‐shear waves are reviewed. Experimental results are presented for pressure‐shear impact of 6061‐T6 aluminum, using a transverse displacement interferometer and a normal velocity interferometer to monitor, respectively, the transverse and normal components of the motion of the rear surface of the target.
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