Abstract
This paper presents some results of a wide research programme aiming to determine high-speed impact performance of carbon/epoxy composites. This paper shows the influence of low temperatures on high-speed impact response and failure of composites.The research has followed the empirical approach, experimental data have been obtained by shooting small steel balls onto composite targets. A light gas gun with 7.62mm calibre barrel has been used to launch projectiles in the range 200-600 m/s approximately. Three testing temperatures have been used, testing at low temperatures requiring special set up to ensure that the impact velocity as well as the temperature were not significantly affected.The results show that carbon/epoxy composites are more brittle under dynamic loading at very low temperatures.
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