SHOCK BEHAVIOR OF 3D CARBON-CARBON COMPOSITE

The compressive response of a 3D carbon-carbon composite under shock w ave was studied in a plate-impact configuration. Two directions of imp act were achieved until a nominal value of longitudinal stress of 2.5 GPa. The measured wave profiles are consistent with previous results o n 3D composites and confirm the behaviour of such materials under impa ct. It is shown that the initial loading is decomposed in two waves. T he first one is transmitted by the longitudinal fibres, the second one corresponds to the propagation of a shock wave in the 'matrix'. Macro scopic characteristics of this material are provided.