The experimental results for the impact behaviour of glass reinforced reac tion injection moulded Nylon 6 beam specimens are reported. The specimens were sub jected to loads in an instrumented impact rig and a number of empirical relations and observations were obtained that relate the deformation of a specimen to the impact energy, percentage glass reinforcement and temperature. In addition, a number of micro- mechanistic features were observed for the fracture process of the specimens.
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