An average of 4 mm specimen's thickness of the unmodified Kevlar fiber reinforced polymer (KFRP) and unmodified glass fiber reinforced polymer (GFRP) composites were fabricated using two different methods namely hand lay-up (HLU) and vacuum bagging (VB0) while the 3 wt% alumina modified KFRP and GFRP (VB3) composite samples were prepared using vacuum bagging method only.
The results of drop weight impact test on both modified and unmodified KFRP and GFRP are presented below.
4 shows the effect of fabrication methods and alumina filler on deflection of KFRP and GFRP composite laminates.
The vacuum bagging fabrication method had increased the maximum load of KFRP and GFRP by 17% and 15% as in Fig.
The total time of impact for KFRP and GFRP fabricated by hand lay-up were recorded at 14.
The visual observation of impacted KFRP and GFRP specimens revealed that delamination area was reduced with addition of alumina filler.