Fracture resistance of fiber-reinforced ceramic matrix composites |
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| Affiliation: | 1. Department of Surgery, Yale University School of Medicine, New Haven, CT, United States;2. Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, United States;1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China;2. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;3. National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China;1. Department of Mechanical Engineering, McGill University, Montreal, Quebec, Canada;2. Faculty of Dentistry, Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada |
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| Abstract: | The influence of the properties of the fibers, the matrix and the interface on the mechanical properties of fiber reinforced ceramics is analyzed by a simplified method previously developed by the authors for cohesive materials. The method parts from the assumption that crack displacements are known a priori and furnishes, in a simple and easy way, the fracture resistance curves versus crack length. The numerical results from the model are compared with experimental data from the literature. Finally, the model is used to assess the influence of fiber strength, interface slipping shear stress, fiber radius and fiber defect distribution on the fracture resistance and ductility of fiber-reinforced ceramic composites. |
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