MRI: Acquisition of High-Resolution X-Ray Computed Tomography System for Real-Time, In Situ Studies of Various Effects on Microstructure of Materials
MRI:获取高分辨率 X 射线计算机断层扫描系统,用于实时、原位研究对材料微观结构的各种影响
基本信息
- 批准号:2018768
- 负责人:
- 金额:$ 91.84万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-10-01 至 2021-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This Major Research Instrumentation (MRI) award supports the acquisition of a high-resolution, four-dimensional (4D) X-Ray Computed Tomography (XCT) system to enable a broad range of fundamental materials research. The knowledge gained will enable advances in the design of novel and high-performance materials – leading to smart and more resilient structures, better medical treatments, and to enhanced energy efficiency. The XCT system will also support education, training, and outreach activities at Missouri S&T and partner institutions, including historically black Lincoln University and Tuskegee University. These activities include training of K-12 students and teachers, integration of the instrumentation into courses and interdisciplinary training and mentoring of graduate and undergraduate students, including individuals from underrepresented minorities at the partner institutions. Features of a material’s microstructure dictate its performance (e.g., mechanical and transport properties). Any external or internal stimulus that imparts changes to microstructure of a material – for example, mechanical load, or chemical reaction – invariably causes its properties to change. Knowledge of such intrinsic microstructure-property links in materials can reveal the origins of the materials’ physicochemical behavior, which can subsequently be capitalized on to optimize their performance. The XCT system – owing to its ability to perform in-situ, real-time characterization of 3D microstructure of materials of various types – will advance research in many areas relevant to design of new materials (e.g., novel cementitious materials; and shape memory alloys), and optimization of performance of prevailing materials (e.g., glasses and ceramics; biomaterials for tissue repair; digitally-fabricated materials; and energy storage-and-conversion materials). With such capabilities, the XCT system will empower the pursuit of high-risk-high-reward research – for instance, to study how mechanical/thermal loads or undesired reactions lead to initiation and propagation of microcracks in a heterogeneous porous material, and to what extent the cracks will affect the material’s transport properties. Significantly, the XCT system will facilitate research geared towards revealing microstructure-property links, and bridging fundamental knowledge-gaps in: characterizing the early stage reactions and microstructure developments in novel CO2-efficient cementitious binders; modeling the development of porosity, lack of fusion, and other defects in additively-manufactured metallic parts; fabricating bespoke components of nickel-titanium shape memory alloys for stiffness-matched biomedical applications, precision force actuators, and energy absorbers; elucidating the deteriorative reactions and transport phenomena in nuclear waste glass surface alteration layer; developing oxygen reactive polymer nanoparticle-based therapeutics to treat traumatic brain injury; and revealing the fundamental relationship between 3D internal microstructural network (with sub-micron resolution) of lithium-ion battery electrodes and the transport of ions and electrons, and correspondingly the battery’s performance.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
该主要研究仪器(MRI)奖支持高分辨率,四维(4D)X射线计算机断层扫描(XCT)系统的收购,以实现广泛的基础材料研究。所获得的知识将使新型和高性能材料的设计取得进展-导致智能和更有弹性的结构,更好的医疗和提高能源效率。XCT系统还将支持密苏里州ST和合作机构的教育、培训和推广活动,包括历史上的黑人林肯大学和塔斯基吉大学。这些活动包括培训K-12学生和教师,将仪器纳入课程,对研究生和本科生进行跨学科培训和指导,包括伙伴机构中代表性不足的少数群体的个人。材料的微观结构的特征决定了其性能(例如,机械和运输性能)。任何外部或内部的刺激,赋予材料的微观结构的变化-例如,机械负荷,或化学反应-总是会导致其性质的变化。材料中这种内在的微观结构-性质联系的知识可以揭示材料的物理化学行为的起源,随后可以利用它们来优化它们的性能。XCT系统-由于其能够对各种类型材料的3D微观结构进行原位实时表征-将推进与新材料设计相关的许多领域的研究(例如,新型胶凝材料;和形状记忆合金),以及现有材料性能的优化(例如,玻璃和陶瓷;用于组织修复的生物材料;数字制造材料;以及能量存储和转换材料)。有了这样的能力,XCT系统将使追求高风险高回报的研究-例如,研究机械/热负荷或不期望的反应如何导致非均质多孔材料中微裂纹的萌生和扩展,以及裂纹将在多大程度上影响材料的传输特性。值得注意的是,XCT系统将促进面向揭示微观结构-性能联系的研究,并弥合以下方面的基础知识差距:表征新型CO2高效水泥基粘结剂的早期反应和微观结构发展;模拟增材制造金属部件中孔隙率,熔融不足和其他缺陷的发展;制造用于刚度匹配的生物医学应用的镍钛形状记忆合金的定制组件、精密力致动器和能量吸收器;阐明核废料玻璃表面改变层中的劣化反应和传输现象;开发基于氧反应性聚合物纳米颗粒的治疗剂以治疗创伤性脑损伤;揭示了三维内部微结构网络(具有亚微米分辨率)的锂离子电池电极以及离子和电子的传输,该奖项反映了NSF的法定使命,并通过使用基金会的学术价值和更广泛的影响审查标准。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Monday Okoronkwo其他文献
Monday Okoronkwo的其他文献
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{{ truncateString('Monday Okoronkwo', 18)}}的其他基金
CAREER: Antiquity-Inspired Novel Stratlingite-Based Cementitious Binder (StraCem): A Lesson from Ancient and Modern Civilizations
职业:受古代启发的新颖的基于 Stradlingite 的水泥基粘结剂 (StraCem):古代和现代文明的教训
- 批准号:
2239511 - 财政年份:2023
- 资助金额:
$ 91.84万 - 项目类别:
Standard Grant
Sustainable and Durable Calcium Sulfoaluminate Binders Enabled by Multi-Physics Characterization and Theory-Guided Machine Learning
通过多物理表征和理论指导的机器学习实现可持续且耐用的硫铝酸钙粘合剂
- 批准号:
1932690 - 财政年份:2019
- 资助金额:
$ 91.84万 - 项目类别:
Standard Grant
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