Knowing the dynamic behavior of polymer materials that are used in the construction of fiber-reinforced composite materials is particularly important for such materials that are subjected to impact.In this work,we have conducted a number of plate-impact experiments on a commercially important aromatic amine epoxy resin that is used in the construction of carbon fiber composite materials.The measured Hugoniot in shock velocity-particle velocity space was U_s=2.65+1.55 u_p(rho_o=1.141 g/cc),and is similar to the measured Hugo-niots of other resins presented by different researchers.We have also measured the longitudinal stress in the shocked material and shown,in common with other polymers,that above a threshold stress,an increase in shear strength with impact stress is Observed.
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