Braided Composites for Aircraft Fuselage Frames

今天的飞机都是用强度大、重量轻的复合材料制造的。目前的制造技术大多局限于劳动密集型的聚合物预浸渍层的逐层沉积，然后在昂贵的高压釜固化中进行聚合物固化。航空航天工业正在寻求降低制造复合材料结构部件的成本。航空航天工业中的承重结构制造是蒙特利尔理工学院、航空航天技术中心（CTA）和纺织技术中心（GCTTG）决定与庞巴迪航空结构和工程服务公司（BAES）合作，利用新技术解决的一个挑战。本项目的目的是开发一种工艺，使用定制的自动编织技术和结构注塑成型工艺来重新组装复合材料飞机机身框架。该项目将确定飞机机身框架的设计范围，模拟编织织物结构，开发编织技术，开发高压灭菌器外灌注技术，生产编织C形框架演示品并评估成本。关于编织C型框架制造的项目建议书将在大学和学院一级培养高素质的人才。它还将为学术界和工业界之间的知识转移提供巨大的机会。这些成果将有助于生产更便宜、更安全、更轻、更环保的飞机，对BAES和加拿大来说意义重大。

Today's aircrafts are built using strong and lightweight composite materials. Current manufacturing techniquesare mostly limited to labor intensive layer-by-layer deposition of polymer pre-impregnated plies followed bypolymer cure in an expensive autoclave cure. Aerospace industry is looking to reduce the costs for fabricatingcomposite structural components. Manufacturing of load-bearing structure in the aerospace industry is achallenge that Polytechnique Montreal, Centre technologique en aérospatiale (CTA) and Center for TextileTechnologies (GCTTG) decided to address using novel technologies in partnership with BombardierAerostructure and Engineering Services (BAES). This project aims at developing a process to manufacturecomposite aircraft fuselage frames using tailored automated braiding technologies and structural infusionmolding process. This project will define the design envelope for aircraft fuselage frames, model braidedtextile architectures, develop the braiding technology, develop the out-of-autoclave infusion technology,produce braided C-frame demonstrators and evaluate the costs. The project proposal on braided C-framemanufacturing will train highly qualified personnel at both the university and college level. It will also creategreat knowledge transfer opportunities between academia and industry. The outcomes will be highly beneficialto BAES and Canada by helping to produce cheaper, safer, lighter and greener aircrafts.