研究改善尼龙3D打印机丝的强度的方法，研究人员University College Dublin已经进行了一项关于添加纤维增援的比较研究。在研究玻璃中，合成聚合物Kevlar和碳纤维的能力进行了测试，以提高3D印刷物体的性能，证明与金属相比具有拉伸能力。
Alternating and patterning
三个实验纤维通过两个喷嘴标记一个3D打印机添加到纯尼龙丝中，屡获殊荣的3D打印机公司Markforged。在此过程中，尼龙和纤维材料以替代层印刷3D，以创建研究标准的狗骨杆。
Glass A, Glass B. Photo via Additive Manufacturing vol.16
Patterning of the fiber layers is one of the key elements to creating tensile strength in the bars. Though two fiber patterns are initially proposed in the research, Concentric pattern ‘A’ and Isotropic pattern ‘B’, only pattern could be fully tested due to its stiffness when attempted using carbon.
Aluminum’s superior
3D打印以不同浓度的碳，凯夫拉尔和玻璃纤维打印后，将狗骨杆压力至断裂点，表征其拉伸（可拉伸）和机械（可弯曲）特性。
By comparison to a dog-bone sample of pure nylon filament, tensile and flexural strengths improved 6.3 fold and 5-fold respectively. The strongest material composite proved to be nylon reinforced with carbon fibers, followed by glass, and then Kevlar which is typically used to strengthen tyres. All composites also demonstrated tensile strengths superior to that of aluminum.
复合材料世界
为了改善FDM/FFF丝的特性，已将石墨烯氧化物添加到了不同的ABS，PLA和TPU材料，即就像在CWRU的研究中一样。丝绸也有expansive composite research for its medical applications，和Louisiana Board of Regents has awarded $150kto a project focused on such materials.
由于FDM/FFF 3D打印机的广泛可用性以及机器使用的材料的相对低成本，因此已经开发了如此的研究。如所讨论的Dr. Achala de Mel in relation to her 3D printed stent research, improved understanding of extrudable materials is poised to open up the applications of 3D printing technologies, especially within high-value medical and automotive industries.
制造连续碳、玻璃和凯夫拉尔fibre reinforced polymer composites using additive manufacturing由爱尔兰大学大学学院机械与材料工程学院的Andrew N. Dickson，James N. Barry，Kevin A. McDonnell和Denis P. Dowling合着。
Featured image: Nylon brake levers with varying faber reinforcement 3D printed using Markforged technology. Photo via 3DHubs
