Nanoscale Near-Surface Deformation Response in Nanostructured Materials

纳米结构材料中的纳米级近表面变形响应

• 批准号: 0852795
• 负责人: Devesh Misra
• 金额: $ 31.92万
• 依托单位: University of Louisiana at Lafayette
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0852795&HistoricalAwards=false
• 关键词: Nanoscale; Near; Surface; Deformation; Response

The research objective of the award is to combine materials science and engineering and computational tools to elucidate the basic mechanisms underlying nanoscale mechanically-induced damage in nanostructured materials at multi-length scales. The concepts developed will enable fabrication of advanced polymeric materials that are characterized by a combination of high modulus and strength with the ability to experience high elastic recovery, together with the benefit of inherent transparency. These properties are desired for a variety of future defense-related applications such as scratch-tolerant face shields. Mechanical models with predictive capabilities for a wide range of polymeric material systems based on the inter-relationship between the internal structure and mechanical properties will be developed. The potential impact of research relates to the mechanistic understanding of nanoscale mechanical damage in nanostructured materials that will have far reaching implications in nanotechnology because of the widespread usage of polymeric materials in applications including magnetic storage devices, biomedical components, and micro-electromechanical systems. Graduate and undergraduate engineering students will benefit through involvement in research and integration of research with existing curriculum. High school students and teachers working together with graduates and undergraduates will obtain first hand research experience, which will motivate them to advanced level of learning and considering science and engineering as their career, while the high school teachers will benefit in designing experiments for classroom demonstration.

该奖项的研究目标是将材料科学与工程与计算工具结合起来，阐明多长度尺度纳米结构材料中纳米级机械诱导损伤的基本机制。所开发的概念将能够制造先进的聚合物材料，其特点是高模量和强度，具有高弹性恢复能力，以及固有的透明度的优点。这些特性是未来各种国防相关应用所需要的，例如耐刮擦面罩。将开发基于内部结构和机械性能之间的相互关系的具有预测能力的机械模型，适用于各种聚合物材料系统。 研究的潜在影响涉及对纳米结构材料中纳米级机械损伤的机械理解，由于聚合物材料在磁存储设备、生物医学组件和微机电系统等应用中的广泛使用，这将对纳米技术产生深远的影响。工程专业的研究生和本科生将通过参与研究以及将研究与现有课程相结合而受益。高中生和教师与研究生和本科生一起工作将获得第一手的研究经验，这将激励他们提高学习水平并以科学和工程为职业，而高中教师将受益于设计课堂演示实验。