This paper evaluates the mechanical properties of woven continuous carbon fibre composites printed by additive manufacturing (AM). Comparison mechanical test studies (tensile, flexural and fatigue) were carried out with two nonwoven AM printed composites (unidirectional and multidirectional fibres), along with those of both a woven composite, as well as a composite reinforced using chopped carbon fibres. Compared with the 17 MPa tensile strength obtained for the chopped fibre composite, the average strength of unidirectional (nonwoven), multidirectional (nonwoven) and woven fibre composites were 39, 13 and 19-fold higher, respectively. The tensile strength of the woven composites was 52% lower than that attained by the unidirectional (nonwoven) fibre composites; and 38% higher than the multidirectional (nonwoven) fibre composites. A comparison was also made between the flexural and fatigue performance of the unidirectional (nonwoven) and woven fibre composites. The flexural strength of the latter was approximately 39% lower than the nonwoven composites, however, the load bearing capacity of woven fibre was superior. This performance difference was supported by the fatigue testing results. At 70% of maximum tensile load capacity after 2 × 10⁵ cycles, the nonwoven composites failed, while the woven composites continued to perform until a level of 85% of maximum load capacity was reached. The superior fatigue strength of the AM fabricated woven carbon fibre composites, demonstrates their potential for use in high cyclic load applications.

本文评估了通过增材制造（AM）印刷的机织连续碳纤维复合材料的机械性能。对两种非织造AM印刷复合材料（单向和多向纤维）以及织造复合材料以及使用短切碳纤维增强的复合材料进行了比较机械测试研究（拉伸，弯曲和疲劳）。与短切纤维复合材料获得的17 MPa抗拉强度相比，单向（非织造），多向（非织造）和编织纤维复合材料的平均强度分别高39倍，13倍和19倍。机织复合材料的抗张强度比单向（非织造）纤维复合材料的抗张强度低52％。比多向（非织造）纤维复合材料高38％。还对单向（非织造）和机织纤维复合材料的弯曲和疲劳性能进行了比较。后者的抗弯强度比非织造复合材料低约39％，但是，织造纤维的承载能力更强。疲劳测试结果证明了这种性能差异。2×10后达到最大拉伸负载能力的70％^在5个循环中，非织造复合材料失效，而织造复合材料继续运行直到达到最大负载能力的85％的水平。AM制造的碳纤维编织复合材料的优异疲劳强度证明了其在高循环载荷应用中的潜力。