Dynamic pressure‐shear loading of materials using anisotropic crystals

摘要: An experimental technique is described which uses anisotropic crystals to generate dynamic pressure‐shear loading in materials. The coupled longitudinal and shear motion generated upon planar impact of the crystal can be transmitted into a specimen bonded rear surface crystal, monitored using velocity interferometer techniques. Test results y‐cut quartz generators x‐cut samples indicate that stresses up 0.35 GPa across epoxy‐bonded interfaces. has been successfully used detect 0.2 wave 6061‐T6 aluminum at 0.7 stress. profiles have an accuracy ±12%. use longer delay legs suggested improve accuracy. Results obtained this investigation are compared with numerical solutions finite‐difference propagation code TOODY.