MRI: Acquisition of an Advanced Nanoindenter for Multiscale Mechanical Characterization of Materials

MRI：获取先进的纳米压痕仪，用于材料的多尺度机械表征

• 批准号: 1428080
• 负责人: Melih Eriten
• 金额: $ 50.7万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1428080&HistoricalAwards=false
• 关键词: MRI; Acquisition; Advanced; Nanoindenter; Multiscale

Non-technical:Nanoindentation is a versatile experimental tool for materials characterization that uses diamond indenters into the surfaces of materials to assess mechanical properties including hardness, modulus, toughness, creep, wear, and damping. Nanoindentation has the ability to make measurements at length scales ranging continuously between about 10 nm and 1 mm. It also has the ability to rapidly and precisely place thousands of measurements for probing internal structure of bulk specimens. For these reasons nanoindentation has become an indispensable tool for research in fields ranging from Medicine to Engineering to Biology, Geology, Chemistry, and Engineering Physics. The Materials Science Center at the University of Wisconsin, Madison is designated to house this nanoindenter for access by researchers across campus and at other institutions, both private and public. Immediate outcomes of the proposed studies include novel materials with the designed friction, adhesion and wear; stronger and safer materials in nuclear, mechanical and electronics applications; biomaterials to be used in regenerative and therapeutic medicine fields, and early prediction of the strength of earthquake faults. Besides serving research, this nanoindenter is expected to aid the teaching mission of the University by providing a user-friendly testing platform to be employed in undergraduate and graduate education. The research team also plans to organize workshops and teach graduate courses on nanoindentation to expand the use of the nanoindenter among various research groups in the university and in 13 local industry partners. Finally, the research team is committed to disseminate educational resources on nanoindentation to facilitate broader participation of K-12 audiences to fundamental scientific and engineering concepts on nanoindentation.Technical:Characterization of fundamental strength and deformation mechanisms in most of today?s demanding materials systems requires multiscale investigation. Automated advanced nanoindentation and scratch experiments are suited for this challenging task due to their high spatial resolution and throughput. Acquisition and utilization of an advanced automated nanoindenter to the University of Wisconsin, Madison is the scope of this project. Specific research activities to be enhanced and enabled by the automated nanoindenter are: micro/nanomechanics and tribology of thin films, 2D materials, coatings and interfaces; strength and deformation mechanisms in composites, and deformation mechanisms and structure of metallic glasses and alloys; influence of radiation, laser, and plasma treatments on materials microstructure and strength; nanomechanical characterization of biomaterials including bone, cartilage and skin, and mechanical effects of geological heterogeneity. To accomplish these broad range of research activities, the nanoindenter based system is equipped with modules for dynamic mechanical analysis; extended travel stage and fluorescence microscope for soft/biomaterials; high load transducer for tribology applications; acoustic emission monitoring; nanoscale electromechanical characterization; high-resolution mechanical property mapping; high temperature stage, and ultra-low force mechanical characterization. This compact and all-in-one configuration is expected to expand present research capabilities of 21 research groups, over 60 graduate, 20 undergraduate students, and 10 postdoctoral researchers and open entirely new avenues of materials science research including the design of novel materials in industrial, nuclear, biomedical and geological applications.

非技术性：纳米压痕是一种用于材料表征的多功能实验工具，它使用金刚石压头进入材料表面来评估机械性能，包括硬度、模量、韧性、蠕变、磨损和阻尼。 纳米压痕能够在约 10 nm 至 1 mm 之间连续的长度范围内进行测量。 它还能够快速、精确地进行数千次测量，以探测大块样品的内部结构。 由于这些原因，纳米压痕已成为医学、工程、生物学、地质学、化学和工程物理等领域研究中不可或缺的工具。 威斯康星大学麦迪逊分校的材料科学中心被指定安置这种纳米压痕仪，供校园和其他私立和公立机构的研究人员使用。拟议研究的直接成果包括具有设计摩擦、粘附和磨损的新型材料；核、机械和电子应用中更坚固、更安全的材料；用于再生和治疗医学领域的生物材料，以及地震断层强度的早期预测。除了服务于研究之外，该纳米压痕仪还有望通过提供用于本科生和研究生教育的用户友好的测试平台来帮助大学完成教学任务。研究团队还计划组织纳米压痕研讨会并教授研究生课程，以扩大纳米压痕仪在大学各个研究小组和 13 个当地行业合作伙伴中的使用。最后，研究团队致力于传播有关纳米压痕的教育资源，以促进 K-12 受众更广泛地参与纳米压痕的基本科学和工程概念。技术：当今大多数要求苛刻的材料系统中基本强度和变形机制的表征需要多尺度调查。自动化的先进纳米压​​痕和划痕实验由于其高空间分辨率和通量而适合这项具有挑战性的任务。该项目的范围是为威斯康星大学麦迪逊分校购买和使用先进的自动化纳米压痕仪。自动纳米压痕仪将加强和实现的具体研究活动包括：薄膜、二维材料、涂层和界面的微/纳米力学和摩擦学；复合材料的强度和变形机制，以及金属玻璃和合金的变形机制和结构；辐射、激光和等离子体处理对材料微观结构和强度的影响；生物材料（包括骨骼、软骨和皮肤）的纳米力学表征，以及地质异质性的机械效应。为了完成这些广泛的研究活动，基于纳米压痕仪的系统配备了动态力学分析模块；用于软/生物材料的长行程载物台和荧光显微镜；用于摩擦学应用的高负载传感器；声发射监测；纳米级机电表征；高分辨率机械性能图；高温阶段和超低力机械表征。这一紧凑、一体化的配置预计将扩大 21 个研究小组、60 多名研究生、20 名本科生和 10 名博士后研究人员的现有研究能力，并开辟材料科学研究的全新途径，包括工业中新型材料的设计、核、生物医学和地质应用。