PFT-TT: Accessible Metal 3D Printing Using Directed Acoustic Energy Direct-write

PFT-TT：使用定向声能直写的易接触金属 3D 打印

• 批准号: 2044352
• 负责人: Keng Hsu
• 金额: $ 24.97万
• 依托单位: University of Louisville Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-03-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2044352&HistoricalAwards=false
• 关键词: PFT; TT; Accessible; Metal; 3D

The broader impact/commercial potential of this Partnerships for Innovation - Technology Translation (PFI-TT) project is the seamless and well-informed integration and transition of tasks in the project, ranging from acquiring and applying targeted scientific knowledge, to process development, and market needs-directed technology development roadmap. The project will culminate not only in scientific knowledge to enable advancement of a new metal 3D printing technique into a feasible technology, but it will also identify the context and market in which this new technology can maximize impact. The project will deliver a clear roadmap for commercialization of a new, massively-accessible, metal 3D printing technology. Furthermore, the highly interactive research and development environment in the project challenges how students understand and approach engineering problems. Problems are solved not only from the perspective of the scientific community, but from an engineering feasibility, cost viability, and long-term marketability, as well as the customer experience point of views. The project provides students with leadership development in innovation and entrepreneurship in STEM. The proposed project allows students involved in this program to obtain scientific knowledge specifically related to the how acoustic energy changes the crystalline lattice defect dynamics under oscillatory shear strain and how defects interact with one another. This knowledge fills the gap in the current literature on how acoustic energy alters dislocation dynamics and interaction across multiple interfaces. The acoustic energy and voxel compression are used to construct a metal 3D printing process via the direct write of solid metal wires. Through experimentation, analytical and computation modeling, the knowledge acquired here not only allows students to deepen their understanding of material mechanics and process physics, but it also allows them to apply the knowledge to the design and development of a new manufacturing process.This project is jointly funded by Partnerships for Innovation (PFI) and the Established Program to Stimulate Competitive Research (EPSCoR).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.

这个创新伙伴关系-技术转化（PFI-TT）项目的更广泛的影响/商业潜力是项目中任务的无缝和充分的整合和转换，从获取和应用有针对性的科学知识，到工艺开发和以市场需求为导向的技术开发路线图。该项目不仅将在科学知识方面达到高潮，使新的金属3D打印技术成为一项可行的技术，而且还将确定这项新技术可以发挥最大影响的环境和市场。该项目将为一种新的、可大规模使用的金属3D打印技术的商业化提供清晰的路线图。此外，项目中高度互动的研究和开发环境对学生如何理解和处理工程问题提出了挑战。问题的解决不仅要从科学界的角度出发，还要从工程可行性、成本可行性、长期市场可行性以及客户体验的角度出发。该项目为学生提供STEM领域的创新和创业领导力发展。本项目使参与本项目的学生能够获得与振动剪切应变下声能如何改变晶格缺陷动力学以及缺陷如何相互作用有关的科学知识。这一知识填补了当前文献中关于声能如何改变位错动力学和跨多个界面的相互作用的空白。利用声波能量和体素压缩，构建了一种直接写入固体金属线的金属3D打印工艺。通过实验，分析和计算建模，在这里获得的知识不仅可以让学生加深对材料力学和过程物理的理解，而且还可以让他们将知识应用到新的制造工艺的设计和开发中。该项目由创新伙伴关系（PFI）和促进竞争研究的既定计划（EPSCoR）共同资助。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Effect of Post Processing Heat Treatment Routes on Microstructure and Mechanical Property Evolution of Haynes 282 Ni-Based Superalloy Fabricated with Selective Laser Melting (SLM)

• DOI: 10.3390/met10050629
• 发表时间: 2020-05-01
• 期刊: METALS
• 影响因子: 2.9
• 作者: Deshpande, Anagh;Nath, Subrata Deb;Hsu, Keng
• 通讯作者: Hsu, Keng