Experimental and Numerical Study of Deformation of FML Plates with the Same Thickness Under Explosive Loading

Research in field of explosions effects on hybrid and composite structures is expanding. One of the loads that defense structures needs to withstand and not lose their performance is the explosion wave. In this thesis, using hand layup glass / epoxy composite plate, fiber-metal laminates optimized for the best resistance to explosive load were made. Then, mechanical properties were obtained using standard tensile tests for composites. The explosion test was carried out using a Shock tube machine. Finally, the results of the empirical test were compared with the numerical simulation of these plates by the finite element software. It was found that experimental and numerical results are in good agreement. At the end, the results of the experimental test and finite element simulation were compared and it was observed that a good match between the results was observed. The results of the experiments have shown that these plates do not even in loading less than 10 grams of C4 (equivalent to a pressure of 28 MPa) inside the shuck tube, and they are delaminated and in Loading 20 grams ruptured. In all experiments, it can be seen that the back aluminum plate, due to the reflection of the compressive wave that converts to the tensile wave, is removed from the panel and deforms the plastic And makes the composite less damaged.