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首页> 外文期刊>Journal of Materials Science and Chemical Engineering >Preparation Process and Optimization Design for Composites Rudderpost in the Long-Time High Temperature Environment
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Preparation Process and Optimization Design for Composites Rudderpost in the Long-Time High Temperature Environment

机译:长期高温环境下复合材料舵柱的制备工艺及优化设计

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Rudder is an important part for the glider aircraft. In order to satisfy the long-time high-velocity for the near-space vehicle in the atmosphere, the light- weight, high-stiffness and high-strength all-composites rudderpost is required urgently to be prepared. The all-composites rudderpost can keep high rudder efficiency in the high temperature environment. Based on the technique require-ment of high-performance composites rudder, a 3D C/SiC rudderpost was manufactured by the CVI-CMC-SiC [1] processes. It was found during rudderpost testing that the high-temperature mechanical properties decreased and had large discretization. The analysis of the failure mechanisms was conducted by FTA method to recognize the failure modes and main reasons for rudderpost abnormal fracture and to reproduce the fracture phenomenon, which could guide production company to modify their preparation process control. Then the modified processes were proved to be validated. And the stability and reliability of the production performances were improved.
机译:舵是滑翔机的重要组成部分。为了满足近太空飞行器在大气中的长期高速性,迫切需要制备轻质,高刚度和高强度的全复合舵杆。全复合舵杆可在高温环境下保持较高的舵效率。基于高性能复合舵的技术要求,通过CVI-CMC-SiC [1]工艺制造了3D C / SiC舵柱。在舵柱测试过程中发现,高温机械性能下降并且离散大。通过FTA方法对失效机理进行分析,识别出方向舵异常断裂的失效模式和主要原因,并再现断裂现象,可以指导生产企业修改其制备过程控制。然后证明了修改后的过程是有效的。并提高了生产性能的稳定性和可靠性。

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