The additive manufacturing technique represents a technological advancement post the industrial revolution, enabling the development of intricate products with minimal waste. In the automotive sector, polymer extrusion‐based additive manufacturing is predominantly employed for part customization. Recently, reinforced polymer matrices have been used to enhance structural integrity, primarily utilizing synthetic materials. Due to environmental concerns, some recent studies have explored the incorporation of natural fiber reinforcement in polymer matrices for 3D‐printed products. Most research has focused on filler reinforcement, limiting investigations to a single type of reinforcement. To bridge this gap and enhance composite performance, our research introduces a novel method for 3D printing composites. This involves stacking sequences using two different natural fiber‐reinforced polylactic acid (PLA) filaments, namely Nona and Soy, respectively. Mechanical testing reveals that the stacking sequence significantly influences the mechanical properties of the 3D‐printed composites. The 3D‐printed composite with Soy/PLA skin stacks exhibits the highest tensile strength of 74.82 MPa. Thermal analysis shows minor changes in glass transition temperature (Tg) and a consistent degree of crystallinity (10.01%). Notable differences in thermal expansion are observed due to the stacking sequence. Fatigue analysis demonstrates the durability of hybrid composites, enduring over 42,000 cycles with minimal deformation compared with to pure fiber‐reinforced 3D‐printed composites. Morphological analysis reveals excellent fiber–matrix interaction and bonding between stacks. The observations confirm that the developed material can be potentially used for developing structurally enhanced composites for lightweight applications. Moreover, the proposed methodology can be adapted for different 3D printing matrices, including robotic printing with multiple axes, making it suitable for various industrial sectors.Highlights Utilization of 3D printing technology for the development of agro‐waste fiber products. Hybridizing the 3D‐printed composite enhanced the fatigue life. New additive manufacturing technique for developing structurally enhanced composites.

中文翻译：

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推进增材制造：通过长丝挤出 3D 打印混合天然纤维夹层（Nona/Soy-PLA）复合材料及其对热机械性能的影响

增材制造技术代表了工业革命后的技术进步，能够以最少的浪费开发复杂的产品。在汽车领域，基于聚合物挤出的增材制造主要用于零件定制。最近，增强聚合物基质已被用于增强结构完整性，主要是利用合成材料。出于环境问题，最近的一些研究探索了将天然纤维增强材料纳入 3D 打印产品的聚合物基体中。大多数研究都集中在填料增强上，将研究限制在单一类型的增强上。为了弥补这一差距并提高复合材料性能，我们的研究引入了一种新的 3D 打印复合材料方法。这涉及使用两种不同的天然纤维增强聚乳酸 (PLA) 长丝（分别为 Nona 和 Soy）的堆叠顺序。机械测试表明，堆叠顺序显着影响 3D 打印复合材料的机械性能。具有大豆/PLA 表皮堆叠的 3D 打印复合材料表现出 74.82 MPa 的最高拉伸强度。热分析显示玻璃化转变温度发生微小变化（时间G）和一致的结晶度（10.01%）。由于堆叠顺序，可以观察到热膨胀的显着差异。疲劳分析证明了混合复合材料的耐用性，与纯纤维增强 3D 打印复合材料相比，能够承受超过 42,000 次循环，变形最小。形态分析揭示了堆叠之间优异的纤维-基体相互作用和粘合。观察结果证实，所开发的材料可用于开发轻质应用的结构增强复合材料。此外，所提出的方法可以适用于不同的3D打印矩阵，包括多轴机器人打印，使其适用于各种工业领域。亮点 利用3D打印技术开发农业废弃物纤维产品。 3D 打印复合材料的混合提高了疲劳寿命。 用于开发结构增强复合材料的新增材制造技术。