Out of autoclave manufacturing of composite aerospace structures

复合航空航天结构的非热压罐制造

• 批准号: 356318-2007
• 负责人: Hubert, Pascal
• 金额: $ 9.47万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=459784
• 关键词: Out; autoclave; manufacturing; composite; aerospace

The majority of aerospace composite structures are manufactured in autoclaves. Autoclave processing of composites uses primarily pre-impregnated unidirectional fibers or fabrics (prepreg) that are typically cured at 180 degree Celsius and consolidated with 6 atm of pressure. A large database of design allowables for autoclave prepregs is available and accessible to aerospace products designer. This well established process requires very high capital investment for the equipment and tooling costs. Limitation in the size of the components manufactured by autoclave is also a major barrier to the production of integrated large composite aerospace components. Alternatives for autoclave processing must be investigated in order to reduce production costs of aircraft composite structures. This project will address the application of a relatively new class of composite materials using out-of-autoclave (OOA) technologies. The advantages of OOA processes include lower tooling and manufacturing costs. However lower material properties and higher part quality variability limited their application to general aviation and the marine industry. The OOA processing technology addressed in this project is polymer composite vacuum cured optimized prepregs. This material is processed with vacuum pressure to generate the compaction force that will consolidate the composite part. Ovens are used to cure thermally the part on the tool. The main objective of this project is to investigate the relationship between the performance (thermo-mechanical, quality) and the production costs (tooling, cure cycle, labor) associated with the manufacturing of a composite airframe structure using out-of-autoclave prepreg technologies. To reach this objective, the proposed work follows a building block approach and is organized in three Parts. Part I consists of the identification and characterization of suitable OOA prepregs. Part n involves the manufacturing of representative OOA laminates and Part III focuses on the manufacturing of a representative sub-component.

大多数航空航天复合结构都是在高压灭菌中制造的。复合材料的高压烷处理主要使用预先浸渍的单向纤维或织物（PrepReg），通常在180度摄氏摄氏度上固化，并用6 atm的压力巩固。通道产品设计师可以使用大型高压灭菌器的设计允许物质数据库。这个良好的过程需要用于设备和工具成本的高资本投资。高压釜制造的组件大小的限制也是产生集成大型复合航空航天组件的主要障碍。必须调查高压釜处理的替代方案，以降低飞机复合结构的生产成本。该项目将使用脱离河口（OOA）技术来解决相对较新的复合材料的应用。 OOA过程的优点包括较低的工具和制造成本。但是，较低的材料特性和较高的质量可变性限制了它们对通用航空和海洋行业的应用。该项目中解决的OOA处理技术是聚合物复合真空固化的优化预制。该材料的真空压力处理以产生将巩固复合部分的压实力。烤箱用于热固化工具上的零件。 该项目的主要目的是调查与使用脱离自动群体外的预备技术相关的性能（热机械，质量）与生产复合机体结构相关的性能（工具，治愈周期，劳动）之间的关系。为了达到这一目标，拟议的工作遵循一种构建方法，并分为三个部分。第一部分由合适的OOA预处理的识别和表征组成。 N部分涉及代表性OOA层压板的制造，第三部分重点介绍了代表性子组件的制造。