Influence of the laminate lay-up on the fatigue behaviour of SiC-fibre/BMAS-matrix composites |
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| Affiliation: | 1. AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al.Mickiewicza 30, 30-059 Kraków, Poland;2. Institute of Aviation, Materials & Structures Research Center, al. Krakowska 110/114, 02-256 Warsaw, Poland;3. AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. Mickiewicza 30, 30-059 Kraków, Poland;4. Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Joliot-Curie 6, 141980 Dubna, Russia;5. Karlsruhe Institute of Technology, Institute of Applied Geosciences, Adenauerring 20b, 76131 Karlsruhe, Germany;1. Arts et Métiers ParisTech, I2M CNRS UMR 5295, F-33400, Talence, France;2. Bordeaux INP, Université de Bordeaux, I2M CNRS UMR 5295, F-33400, Talence, France |
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| Abstract: | The influence of the laminate lay-up on the mechanical response and the damage development during fatigue loading of SiC fibre toughened BMAS glass-ceramic matrix composites was studied at room temperature. Uni-directional, cross-plied, angle-plied, and quasi-isotropic laminates were investigated. The different materials survived 106 fatigue cycles for maximum fatigue stresses below a stress level dependent on the laminate lay-up. The thus defined fatigue limit decreased from 375 MPa for uni-directional to 70 MPa for angle-plied SiC/BMAS. Finally, the fatigue damage mechanisms were identified and the mechanical response related to the fatigue damage. |
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