Perbandingan Ketangguhan Impact Material Komposit Serat Polimer

Composite materialsbased on fibers are widely used because they are lightweight and strong. Fibers such as carbon, Fiberglass, and aramid (Kevlar) are commonly
used because they can absorb impact energy. This study aims to compare the impact toughness of these three types of fibers, both individually and in combination, using the Charpy test method in accordance with standard ASTM
E23. Test results indicate that the combination of carbon fiber and Kevlar exhibits the highest impact toughness value, at 0.058 J/mm² for the composite fiber. Pure
Kevlar demonstrates the best performance among single fibers, with an average value increase from 0.050 J/mm² (1 layer) to 0.087 J/mm² (4 layers). Pure carbon fiber showed fluctuating average values, ranging from 0.051 J/mm² to 0.059 J/mm², but did not exhibit a consistent upward trend. Meanwhile, fiberglassfibers have unstable values, ranging from 0.045 J/mm² to 0.056 J/mm². In the 2-layer comparison, pure fiberglassprovides the highest average toughness value at 0.066 J/mm. From these results, it is concluded that the combination of carbon and Kevlar is most effective in enhancing the impact toughness of composites, and Kevlar has proven to be superior as a single fiber in absorbing impact energy.