US-Germany Cooperative Research: Interaction Forces in Nanoindentation of Composite Materials

美德合作研究：复合材料纳米压痕中的相互作用力

• 批准号: 0233261
• 负责人: Joseph BelBruno
• 金额: $ 1.58万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-15 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0233261&HistoricalAwards=false
• 关键词: US; Germany; Cooperative; Research; Interaction

0233261BelBrunoThis award supports the PI and graduate students from Dartmouth College in a collaboration with Asta Richter of the Institute for Engineering Physics at the University of Applied Sciences-Wildau, Germany. The German expertise in experimental techniques will be combined with the US expertise in computational modeling will combine to enhance understanding of the nanoindentation process. The proposed research focuses on the indenter tip-crystal interaction, with particular emphasis on deformation of atomic layers and the creation of defects and cracks at the nanoscale level. The computational effort, including simulations, will explore the effect of nanoindentation on the surface layers at an atomistic level, looking at correlations between experimental parameters and displacement/elastic processes at the surface. The experiments will measure mechanical properties of very thin films and composite materials, which will yield quality measures for mechanical properties, like hardness and Young's modulus, to classify thin film structures on micro-and nanoscales. The new quality measures are needed to characterize nonomaterials.The project also has an educational objective. The project will allow the graduate students involved to benefit from performing research in another country. They will develop a heightened appreciation of the world around them while also learning important new technical skills.

0233261贝尔布鲁诺该奖项与德国威尔道应用科学大学工程物理研究所的阿斯塔·里希特合作，为达特茅斯学院的PI和研究生提供支持。德国在实验技术方面的专业知识将与美国在计算建模方面的专业知识相结合，以加强对纳米压痕过程的理解。建议的研究集中在压头尖端和晶体之间的相互作用，特别强调原子层的变形和纳米级缺陷和裂纹的产生。包括模拟在内的计算工作将在原子水平上探索纳米压痕对表面层的影响，考察实验参数与表面位移/弹性过程之间的相关性。这些实验将测量非常薄的薄膜和复合材料的机械性能，这将产生机械性能的质量指标，如硬度和杨氏模数，以在微米和纳米尺度上对薄膜结构进行分类。需要新的质量衡量标准来表征非物质。该项目也有一个教育目标。该项目将允许参与的研究生从在另一个国家进行研究中受益。他们将培养对周围世界的高度欣赏，同时也学习重要的新技术技能。