Torsion and flexural-torsional coupled mechanical properties of different C/SiC torque tubes at room and elevated temperatures |
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| Affiliation: | 1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi''an, 710072, PR China;2. Xi''an Xinyao Ceramic Composite Materials Co., Ltd., Xi''an, 710117, PR China;3. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, No.29 Jiangjun Ave., Nanjing, 211106, PR China;1. Institute of Silicate Chemistry of the Russian Academy of Sciences ISC RAS, Makarova Emb. 2, Saint Petersburg, 199034, Russia;2. Institute of Earth Sciences, Saint Petersburg State University, Universitetskaya Emb. 7/9, Saint Petersburg, 199034, Russia;3. Chemistry Department, Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia;1. Aix Marseille Université, Université de Toulon, CNRS, IM2NP, Marseille, CS 60584, Toulon, Cedex 9, F-83041, France;2. Université de Toulon, Aix Marseille Université, CNRS/INSU, IRD, MIO UM 110, CS 60584-83041, Toulon, CEDEX 9, France;1. Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, 11800, Penang, Malaysia;2. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia;3. Materials Science Laboratory, Department of Physics, MES Ponnani College, 679586, Ponnani, Kerala, India |
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| Abstract: | In this paper, the torsion and flexural-torsional coupled mechanical properties of different C/SiC torque tubes were investigated for the testing condition at room and elevated temperatures. Effects of fiber types, fiber preforms, and small hole during fabrication process on torsion mechanical properties were investigated. Flexural-torsional coupled mechanical tests for C/SiC torque tubes with different external diameter and wall thickness were conducted at room and elevated temperatures. The torsion and flexural moments and corresponding shear and flexural strength were obtained. The fracture surface and cracks propagation path were observed and analyzed. The torque and shear strength in T300™-3k torque tube were much higher than those of T300™-1k torque tube. Among 3D needled (3DN), 2D plain-woven [0°/90°] and [±45°] C/SiC torque tubes, the density, torque, and shear strength of 3DN-C/SiC torque tube were the highest. For the C/SiC torque tubes with small hole, the small hole not only increased the densification and uniformity (axial and radial) of the torque tube, but also has the potential to make the damage cracks more zigzag, which improved the fracture toughness of the torque tubes. |
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| Keywords: | C/SiC Torque tube Torsion Flexural-torsional Mechanical properties |
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