"IMPTEST involves a campaign for gas gun impact testing of shielding materials for protection of aircraft against small fragments generated by failure of rotating engine components. The test campaign includes three phases, where Phase 1 involves normal impact to find the ballistic limit velocity of metallic shields and three different composite shield concepts, using three different impactors at velocities below 600 m/s. Phase 2 involves studies of the influence of impact angle and higher velocities etc for the two selected design concepts, while Phase 3 will study the influence of material aging for the selected shield concepts. Furthermore, fibre bundle tests will be performed at -40C and +120C, and the results will be used in impact simulations to study the influence of temperature. High speed photography will be used to record the impact response history of all specimens. In addition strain and load histories will be recorded for selected specimens. The damage in all specimens will be characterised quantitatively and qualitatively using various fractographic methods, e.g. C-scan."