B. Blake, B. Eslami
Widener University,
United States
Keywords: FDM, composites, PLA, ABS, 3D Printing
Summary:
Fused Deposition Modeling (FDM) is a commonly used 3D printing process characterized by its versatility in material selection, however FDMs layer by layer process often leads to lower strength properties. This study explores the mechanical properties of FDM 3D-printed composite materials, specifically on the influence of Carbon Fiber-reinforced Polylactic Acid (PLA-CF) on tensile and flexural strength when reinforcing Polylactic Acid (PLA) parts. Composite samples were printed with varying ratios of PLA and PLA-CF, ranging from 0% to 100% PLA-CF in 20% increments with layer groups stacked vertically. Tensile testing revealed a proportional increase in strength as PLA-CF content increased, indicating that carbon fiber reinforcement significantly enhances tensile performance. However, flexural testing demonstrated a decrease in bending strength with higher PLA-CF content, suggesting a trade-off between stiffness and flexibility. Mid-range ratios (40-60% PLA-CF) provided a balance between tensile and flexural properties. The results highlight the potential of PLA-CF/PLA composites for applications requiring enhanced tensile strength and flexural performance.