Micromechanical model of time-dependent damage and deformation behavior for an orthogonal 3D-woven SiC/SiC composite at elevated temperature in vacuum |
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| Affiliation: | 1. Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei-shi, Tokyo 184-8588, Japan;2. Japan Aerospace Exploration Agency (JAXA), 6-13-1, Osawa, Mitaka-shi, Tokyo 181-0015, Japan;1. Key Laboratory of Aeroengine Thermal Environment and Structure, Ministry of Industry and Information Technology, Nanjing, 210016, PR China;2. Nanjing Forestry University, College of Chemical Engineering, Nanjing, 210016, PR China;3. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;4. State Key Laboratory of Mechanics and Control Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;5. AECC Sichuan Gas Turbine Establishment, Chengdu, 610500, People''s Republic of China;6. Representative Office of No. 420 Factory, The Chinese People''s Liberation Army, Chengdu, 610503, PR China;1. Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei-shi, Tokyo 184-8588, Japan;2. Advanced Composite Research Center, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA), 6-13-1, Osawa, Mitaka-shi, Tokyo 181-0015, Japan;1. School of Power and Energy, Northwestern Polytechnical University, Xi''an 710072, China;2. School of Energy and Power Engineering, Beihang University, Beijing 100191, China;3. Collaborative Innovation Center of Advanced Aero-engine, Beijing 100191, China;4. Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China;5. China Flight Test Establishment, Xi’an China;1. Structural Analytics, Inc, Carlsbad, CA, United States;2. Raytheon Technologies Research Center, East Hartford, CT, United States;3. Cornell University, Ithaca, NY, United States;1. CEA, DEN, DMN, SRMA, F-91191 Gif-sur-Yvette Cedex, France;2. Université Paris-Est, Laboratoire Navier, CNRS UMR 8205, ENPC, IFSTTAR, F-77455 Marne-la-Vallée, France;3. Mines ParisTech, Centre des matériaux, CNRS UMR 7633, BP 87, 91003 Evry Cedex, France;1. School of Energy and Power Engineering, Beihang University, Beijing 100191, China;2. Department of Materials, University of Oxford, Oxford OX1 3PH, UK;3. School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | This paper presents a micromechanical model to predict the time-dependent damage and deformation behavior of an orthogonal 3-D woven SiC fiber/BN interface/SiC matrix composite under constant tensile loading at elevated temperature in vacuum. In-situ observation under monotonic tensile loading at room temperature, load–unload tensile testing at 1200 °C in argon, and constant load tensile testing at 1200 °C in vacuum were conducted to investigate the effects of microscopic damage on deformation behavior. The experimentally obtained results led to production of a time-dependent nonlinear stress–strain response model for the orthogonal 3-D woven SiC/SiC. It was established using the linear viscoelastic model, micro-damage propagation model, and a shear-lag model. The predicted creep deformation was found to agree well with the experimentally obtained results. |
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| Keywords: | SiC/SiC composite Time-dependent deformation Microscopic damage Micromechanical model Creep |
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