Dynamic response

Before launching the experimental study for a dynamic case, it is necessary to ensure that the tests can be reproduced. With this objective in mind, for each fibre orientation, a minimum of three tests were carried out at the same impact pressure in order to analyze the tests reproducibility. As figure 4a shows, it is noted that the tests are repeatable and a fact that was checked for each test. Figures 4b and 4c show the velocities and the loads at two faces of specimen. For in-plane and out of plane tests, results for compressive strain rates between 200s-1 and 2000s-1 are obtained using SHPB. Figure 4d shows the evolution of the strain rate versus time. The maximum value is taken into account for the analysis of the experimental results.

Dynamic response