Assessment of preform manufacturing processes with ceramic fibers

陶瓷基复合材料（CMC）是由陶瓷纤维增强体和陶瓷基体组成的复合材料。这种组合产生了一种轻质材料，可以承受长达1100°C的温度，因此超过了超级合金的性能。随着耐温性的增加，发电厂和飞机发动机中的涡轮机可以在更高的温度下运行，这将提高燃料效率并降低排放。尽管陶瓷纤维在复合材料中的使用不是很广泛，因此关于这种类型材料的预制件制造的容易性的信息很少。 该项目旨在评估陶瓷纤维纱线在传统制造设备上生产CMC部件预制件的可制造性。这项工作应确定在不同的生产设备上生产2D，2.5D和3D预制件时加工陶瓷纤维的不同挑战。近净形预制件的制造工艺将被研究，以尽量减少光纤损耗和制造后的操作。这些信息将用于指导新部件的设计和制造，以改善重量和工作温度。

Ceramic matrix composite (CMC) are produced with a ceramic fibers reinforcement surrounded by a ceramic matrix. This combination produces a lightweight material that can withstand prolonged exposure to temperature up to 1100°C and therefore surpass the performances of superalloys. With this increase in temperature resistance, turbines in power plants and aircraft engines could operate at higher temperature which would improve fuel efficiency and lower emissions. Although, ceramic fibers usage in composite materials is not very widespread and therefore few information is available on the ease of preform manufacturing of this type of material. This project aims to assess the manufacturability of ceramic fibers yarns on conventional manufacturing equipment to produce preforms for CMC parts. This work should identify the different challenges of processing ceramic fibers in the production of 2D, 2.5D and 3D preforms on different production equipment. Near net-shape preform manufacturing technics will be investigated in order to minimize fiber loss and post-fabrication manipulations. This information will be use to guide the design and the manufacturing of new parts with improved weight and operating temperature.