A Microstructual Design Study of Ceramic Composites Using Computational and Experimental Methods

拟议的调查将利用最近开发的 设计复合材料的分析技术（均匀化理论） 微观结构的特定加载历史，如压缩， 扭转和多轴加载历史。 这些分析 技术是新颖的，并允许确定微观结构 纤维增强陶瓷对多轴向载荷的宏观响应 加载历史记录。 该方法允许分析复杂的 复合材料系统，包括具有3D纤维架构的系统。 此外，该方法可用于确定显微组织 以及复合材料在高温下的宏观响应， 其中可能存在非线性行为。 的哲学 建议的工作是确定具体的微观结构（包括 界面结合的要求），这将优化 纤维增强复合材料的抗断裂性能 静态和循环载荷历史。 纤维的发展- 增强陶瓷仍然处于非常早期的状态;因此， 拟议的调查有可能大大减少 这些复合材料的开发时间。

The proposed investigation will utilize a recently developed analytical technique (homogenization theory) to design composite microstructure for specific loading histories, such as compression, torsion and multi-axis loading histories. These analytical techniques are novel and allow determining both the microstructural and macroscopic response of fiber-reinforced ceramics to multiaxial loading histories. The approach allows the analysis of complex composite systems, including those with 3-D fiber architectures. Moreover, the approach can be used to determine the microstructural and macroscopic response of composites at elevated temperatures, where non-linear behavior may be present. The philosophy of the proposed work is to identify specific microstructure (including requirements for interfacial bonding) that will optimize the fracture resistance of fiver-reinforced composites for various static and cyclic loading histories. The development of fiber- reinforced ceramics is still at a very early state; thus, the proposed investigation has the potential to significantly reduce the development time for these composites.