Abstract
Machined titanium chips are normally recycled as non-ferrous scrap metal, however, one approach is to recycle titanium chips to construct as lightweight sandwich panel with high energy absorption capabilities. The development of advanced ballistic protection systems that are lightweight while still providing superior energy absorption capacities is a challenge. This study reports the ballistic impact performance of sandwich panel made of Kevlar woven fabric and recycled materials, namely, titanium chips. Titanium is a lightweight material compared with steel however possesses much stronger energy absorption. Sandwich panels were constructed using titanium chips, together with layers of Kevlar woven fabric and a polymeric material. The enhancement of Kevlar woven fabric with titanium chips further strengthens sandwich panel especially in ballistic impact performance. Ballistic impact tests using a nitrogen powered gas gun firing projectiles with impact velocities range from 300 - 350 ms-1 was carried out. Bonding of the titanium chips with a polymeric material is crucial for the overall ballistic performance. This study proved that reduction in layers of Kevlar fabric is possible by substitution of lightweight material such as titanium chips as energy absorption materials.
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