Resumo:
The energy absorption of alumina-epoxy composites with 10, 20, 30, 40, 50, 60, 70, 80 and 90% wt% alumina in ballistic tests was investigated. The tests were carried out at subsonic speed using a compressed air rifle. The results showed that the composite with 30% alumina yields the best results. Scanning electron microscopy (SEM) images of this composite showed intragranular and intergranular fracture, suggesting a high adhesion between alumina and epoxy.