3D carbon preforms for net-shape-out-of-autoclave manufacturing of aerospace composite parts

聚合物基复合材料（PMC）的特点是高强度，高刚度和低质量。这些特性使PMC成为机身结构的理想选择，因为质量减少对运营成本具有可衡量的影响。航空航天PMC是基于碳纤维的制造材料：在成本较低的高压釜外工艺中，这些纤维被编织，编织或缝合成织物，并注入可固化树脂，如环氧树脂。几十年来，PMC一直用于制造简单、薄的“2D”机身部件。随着重量的进一步减轻，越来越多地考虑将PMC用于复杂的机体部件。PMC和纺织技术的进步需要可靠，高效和经济地生产具有复杂3D形状，厚截面和高纤维含量的PMC部件，以达到可预测的性能规格。

Polymer-matrix composite materials (PMCs) are characterised by high strength, high stiffness and low mass. These properties make PMCs ideal for airframe construction as mass reduction has a measurable impact on operating costs. Aerospace PMCs are fabricated materials based on carbon fibres: in lower-cost, out-of-autoclave processes these fibres are woven, braided or stitched into fabrics and infused with curable resins such as epoxy. PMCs have been used for making simple, thin, '2D' airframe components for decades. As further weight reductions are sought PMCs are increasingly considered for complex airframe parts. Advances in PMC and textile technologies are needed for reliable, efficient and economical production of PMC parts with complex 3D shapes, thick sections and high fibre content, to predictable performance specifications.