Nanoengineered Interfaces

摘要：CMS-0600675本研究的目的是分析具有纳米颗粒改性的纤维-基体界面的新型复合材料的界面行为。该项目包括制造纳米纤维表面改性的纤维，制造纳米改性纤维增强的复合材料，界面断裂和摩擦的实验评估，以及这些材料中应力传递，断裂和摩擦的多尺度模型的开发。这项研究将提供更好的基本了解复杂的界面现象在异质材料和促进在纳米和微米尺度的界面设计和工程方法的进展。如果成功的话，这项研究可以导致改进的轻质复合材料具有上级断裂韧性，疲劳耐久性和抗冲击性。这种复合材料将可用于各种应用中。研究结果也可用于其他异质材料，如多晶材料和生物界面。计划的教育和推广活动包括对研究生和本科生的支持和研究培训（后者得到了NSF REU的支持），以及开发关于纳米复合材料的新的本科生/研究生课程。

Abstract: CMS-0600675 The objective of this research is the analysis of interfacial behavior of novel composites with fiber-matrix interfaces modified by nanoparticles. The project includes manufacturing of fibers with surfaces modified by nanoparticles, manufacturing of composites reinforced with nanomodified fibers, experimental evaluation of interfacial fracture and friction, and development of multiscale models of stress transfer, fracture, and friction in these materials. The research will provide better fundamental understanding of complex interfacial phenomena in heterogeneous materials and foster progress in methods of design and engineering of interfaces at nano- and microscales. If successful, this research can lead to improved lightweight composites with superior fracture toughness, fatigue durability, and impact resistance. Such composites will be usable in a variety of applications. The results will also be usable for other heterogeneous materials, such as polycrystalline materials and biological interfaces. Planned educational and outreach activities include support and research training of graduate and undergraduate students (the latter with support from NSF REU) and development of a new undergraduate/graduate course on nanocomposites.