NSF/Sandia: Atomistic-Based Continuum Models of Micro- and Nano-Scale Engineered Systems/Processes

NSF/桑迪亚：基于原子的微米级和纳米级工程系统/过程的连续体模型

• 批准号: 0331124
• 负责人: YongGang Huang
• 金额: $ 22.5万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0331124&HistoricalAwards=false
• 关键词: NSF; Sandia; Atomistic; Based; Continuum

Nanotechnologies have been recognized as a key technological area critical to the economic well-being of the United States in the 21st century, with potentials of unparalleled improvement in our future standard of living. To realize the potential benefits of nanotechnologies, however, one must develop enabling technologies to scale up the nano-scopic components to micro/meso-scopic products and beyond. This project assembles a multidisciplinary research team with complementary expertise to investigate integrated processing, manufacturing and modeling issues of a class of very important engineering material for nanotechnologies Carbon nanotube composites. The goal of this work is to use the atomistic-based continuum models to investigate the properties and manufacturability of carbon nanotube composites. The proposed research program includes three main thrust areas: i) studying the processing and characterization of nanotube-polymer composites; ii) exploring the applicability of various manufacturing techniques for these composites; and iii) developing multiscale, atomistic-based models for processing, manufacturing, and mechanical properties of nanotube composites. The research project is expected to produce physically sound models that can be used to study the manufacturability and properties of nanotube composites, and to address the critical issues related to processing and manufacturing of nanotube composites. Many potential benefits may accrue from this research. At present, there is very limited understanding of the manufacturability of ultra-hard, nano-materials. The proposed study, through understanding of the mechanisms of material removal and the role of Carbon Nanotubes during the machining process, combined with multi-scale modeling efforts, will provide guidelines for Carbon Nanotubes composite processing to enhance both the mechanical properties and the manufacturability of the composites. The mechanics analysis will give rise to powerful tools to link nano-structures to the macroscopic behavior of the material. The results of the proposed research could also be used to model performance of Carbon Nanotubes composites in future applications, such critical load-carrying components in aerospace industry, medical and bio-medical devices. In addition to the research activities, the proposed program contains a comprehensive educational plan. The educational plan aims at the broader objective of training and educating graduate and undergraduate students, K-12 school teachers, and the general public on potentials and issues of nanoscale science and engineering and nano-manufacturing. Specifically, the program highlights efforts to train next generation leaders in nano-manufacturing; to involve middle school and high school teachers in the research through Research Experiences for Teachers (RET) program as a vehicle to reach out to K-12 students; to boost participation of members of underrepresented groups by partnering with women and minority student organizations on campus; and to educate the general public about the opportunities and implications of nano-science and engineering by participating in the annual Engineering Open House program. Furthermore, the proposed educational program is expected to significantly stimulate younger generation's interests in this emerging field, and to improve U.S. industry's future competitiveness in nanotechnology by producing well-trained researchers and engineers.

纳米技术已被认为是对 21 世纪美国经济福祉至关重要的关键技术领域，具有无与伦比地提高我们未来生活水平的潜力。 然而，为了实现纳米技术的潜在优势，我们必须开发一种使纳米级组件扩大到微米/介观产品及其他产品的技术。 该项目组建了一个具有互补专业知识的多学科研究团队，研究一类非常重要的纳米技术工程材料碳纳米管复合材料的集成加工、制造和建模问题。 这项工作的目标是使用基于原子的连续介质模型来研究碳纳米管复合材料的性能和可制造性。 拟议的研究计划包括三个主要领域：i）研究纳米管聚合物复合材料的加工和表征； ii) 探索这些复合材料的各种制造技术的适用性； iii) 开发多尺度、基于原子的模型，用于纳米管复合材料的加工、制造和机械性能。 该研究项目预计将产生物理上合理的模型，可用于研究纳米管复合材料的可制造性和性能，并解决与纳米管复合材料加工和制造相关的关键问题。这项研究可能会产生许多潜在的好处。 目前，人们对超硬纳米材料的可制造性了解非常有限。 拟议的研究通过了解材料去除机制和碳纳米管在加工过程中的作用，结合多尺度建模工作，将为碳纳米管复合材料加工提供指导，以提高机械性能和可制造性。复合材料。 力学分析将产生强大的工具，将纳米结构与材料的宏观行为联系起来。 拟议研究的结果还可用于模拟碳纳米管复合材料在未来应用中的性能，例如航空航天工业、医疗和生物医学设备中的关键承载部件。 除了研究活动之外，拟议的计划还包含全面的教育计划。 该教育计划旨在实现更广泛的目标，即对研究生和本科生、K-12 学校教师以及公众进行关于纳米科学与工程和纳米制造的潜力和问题的培训和教育。 具体来说，该计划强调了培训下一代纳米制造领导者的努力；通过教师研究经验 (RET) 计划让初中和高中教师参与研究，作为接触 K-12 学生的工具；通过与校园内的妇女和少数族裔学生组织合作，促进代表性不足群体成员的参与；通过参加年度工程开放日计划，教育公众了解纳米科学和工程的机会和影响。 此外，拟议的教育计划预计将显着激发年轻一代对这一新兴领域的兴趣，并通过培养训练有素的研究人员和工程师来提高美国工业在纳米技术方面的未来竞争力。