<![CDATA[Composite materials have become highly important in the manufacturing industry. However, the development of composites often faces the challenge of finding effective, economical, and environmentally friendly reinforcing materials. This study aims to analyze the comparison of physical characteristics in composite materials reinforced with natural fibers through Vickers hardness testing and then compare these hardness values with composite materials reinforced with synthetic fibers. The Vickers hardness testing method adheres to the ASTM E348 microhardness testing standard. The results show that the addition of fibers to composite materials tends to increase the likelihood of voids or trapped air bubbles within the composite material, which increases its porosity value. Furthermore, the use of synthetic fibers, especially carbon fiber, is still superior to pineapple leaf fiber (PALF) because the hardness value of carbon fiber is indeed superior to other fibers. However, pineapple leaf fiber (PALF) has advantages in its stability, is more environmentally friendly, and has a lower production cost compared to synthetic fibers.]]>
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