Measurement of Mechanical Properties of Small Material Structures by Nanoindentation

摘要纳米压痕是一种广泛应用于小体积材料力学性能测试的超低载荷压痕技术，本项目旨在扩展我们对纳米压痕在各种小体积材料结构上的力学和机理的理解，包括碳纳米管森林、热障涂层、介电和金属薄膜以及聚合物薄膜。逆向分析算法将被开发，以提取小材料系统的内在力学性能。该研究提出了新的和改进的理解微观结构的机制，提供了新的方法来确定机械性能，通过简单的测试，并在薄膜和其他小系统的更好的模型的结果。更广泛的影响是通过潜在的意义，研究工作在多尺度建模和实施纳米科学和技术。 此外，拟议的研究完全整合了一个教育计划，包括本科生和研究生的增强，该项目是进一步加强与行业和其他大学的合作。

ABSTRACTNanoindentation is an ultra-low load indentation technique that is widelyused to probe the mechanical properties of materials of small volume.This project aims to extend our understanding of the mechanics andmechanisms of nanoindentation on a variety of small material structures,including carbon nanotube forests, thermal barrier coatings, dielectricand metallic thin films, and polymer films. Reverse analysis algorithmswill be developed to extract the intrinsic mechanical properties of smallmaterial systems. The proposed research develops new and improvedunderstanding of the microstructural mechanisms, provides newmethodologies of determining the mechanical properties through simpletests, and results in better models for thin film and other small systems.The broader impacts are through the potential significance of the researcheffort in multi-scale modeling and implementing nanoscience andtechnology. In addition, the proposed research fully integrates with aneducation program that includes undergraduate and graduate enhancement,and the project is further bolstered by collaboration with industry andother universities.