<![CDATA[This study aims to examine the effect of fiber orientation and volume fraction on the impact strength of sugarcane fiber–epoxy composites. Sugarcane fiber is considered a promising natural reinforcement material due to its lightweight, renewable nature, and environmental friendliness. Specimens were fabricated using the vacuum bagging method with fiber orientations of 0°, 60°, 90°, and random, and volume fractions of 5%, 10%, 15%, and 20%. Impact testing was conducted according to ASTM D6110-10 to determine absorbed energy and impact strength. The results show that both fiber orientation and volume fraction significantly influence impact strength. The highest impact strength was achieved with a 15% volume fraction and 0° fiber orientation, reaching 0.085 J/mm² or an absorbed energy of 8.5 Joules. In contrast, the lowest value was recorded at a 15% volume fraction with 90° fiber orientation, yielding 0.018 J/mm² or 1.8 Joules. The interaction between these variables also contributed significantly to enhancing material toughness. These findings highlight the importance of optimizing fiber orientation and volume fraction in designing natural fiber-based composites for lightweight structural applications]]>
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