连续纤维增强陶瓷基复合材料连接件的研究进展

Research progress in continuous fiber reinforced ceramic matrix composite joints

连续纤维强韧化陶瓷基复合材料(CMCs)是航空航天等领域关键热结构材料,机械连接作为最可靠的连接方式之一,是实现大尺寸复杂CMCs构件连接的重要手段。目前,CMCs连接件的研究正在快速发展,但鲜见有关CMCs连接件的全面综述性文献。本文围绕近年来在CMCs连接件领域的研究工作,归纳了CMCs紧固件的制备及力学性能表征方法,系统梳理和讨论了CMCs紧固件的损伤失效机制,从材料性能和外部环境角度出发,重点阐述了CMCs紧固件力学性能的影响因素和规律,并介绍了CMCs机械连接件相关研究工作,最后对CMCs连接件在损伤规律、失效机制、有限元仿真以及连接可靠性等方面进行了展望。

Continuous fiber reinforced and toughened ceramic matrix composites(CMCs)are key thermal structural materials in aerospace and other fields.Mechanical connectivity,as one of the most reliable connectivity methods,is an essential method to achieve connectivity of large and complex CMCs components.At present,research on CMCs joints is rapidly developing,but there is few comprehensive review literature on CMCs joints.Based on the research work in the field of CMCs joints in recent years,the preparation and mechanical property characterization methods of CMCs fasteners were summarized in this paper,the damage and failure mechanism of CMCs fasteners were systematically stored and discussed,and focusing on the influencing factors and laws of mechanical properties of CMCs fasteners from the perspective of material properties and external environment.The research work on CMCs mechanical joints was presented,and the damage law,failure mechanism,finite element simulation and reliability of CMCs connectors were prospected.