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：纳米凹痕是用于材料表征的多功能实验工具，它使用钻石凹痕进入材料表面，以评估机械性能，包括硬度，模量，韧性，韧性，蠕变，磨损和阻尼。 纳米引导具有在约10 nm至1 mm之间连续的长度尺度进行测量的能力。 它还具有快速，精确地放置数千个测量值以探测散装标本的内部结构的能力。 由于这些原因，纳米构想已成为从医学到工程再到生物学，地质，化学和工程物理学的领域研究的必不可少的工具。 威斯康星大学麦迪逊分校的材料科学中心被指定为该纳米Indententer，可供整个校园和其他机构的私人和公共机构的研究人员进入。拟议研究的直接结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强大，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。除了为研究提供研究外，这款纳米Indententer有望通过提供一个用户友好的测试平台来帮助大学的教学任务。研究小组还计划组织研讨会并教授研究生课程有关纳米指标的课程，以在大学的各个研究小组和13个本地工业合作伙伴中扩大纳米Indententer的使用。最后，研究团队致力于传播有关纳米构想的教育资源，以促进K-12受众对纳米识别的基本科学和工程概念的更广泛参与。技术：在当今大多数情况下，基本强度和变形机制的表征？自动化的高级纳米构件和刮擦实验非常适合这项具有挑战性的任务，因为它们的高空间分辨率和吞吐量。麦迪逊的威斯康星大学的高级自动纳米Indententer的获取和利用是该项目的范围。自动化的纳米插入器将增强和启用的特定研究活动是：微/纳米力学以及薄膜，2D材料，涂料和界面的摩擦学；复合材料中的强度和变形机制，金属玻璃和合金的变形机制和结构；辐射，激光和血浆处理对材料微结构和强度的影响；生物材料的纳米力学表征，包括骨骼，软骨和皮肤以及地质异质性的机械作用。为了完成这些广泛的研究活动，基于纳米Indententer的系统配备了用于动态机械分析的模块。软/生物材料的延长行进阶段和荧光显微镜；摩擦学应用的高负载传感器；声发射监测；纳米级机电表征；高分辨率机械性能映射；高温阶段和超低力机械表征。预计这种紧凑和多合一的配置将扩大21个研究小组的研究能力，60多名研究生，20名本科生以及10位博士后研究人员以及材料科学研究的全新途径，包括在工业，核，生物医学和地质应用方面设计新型材料。