IUCRC Planning Grant University of Nebraska-Lincoln: Center to Accelerate Recipe Development for Additive Manufacturing of Metals (CARDAMOM)

该奖项资助内布拉斯加大学林肯分校（UNL）的规划活动，用于拟议的三个地点的工业大学合作研究中心（IUCRC），即加速金属增材制造配方开发中心（CARDACHE）。CARDAUNK由内布拉斯加大学林肯分校与德克萨斯大学格兰德河谷分校和亚拉巴马大学合作领导。金属增材制造（AM），也称为金属3D打印，正在改变美国和世界各地的制造业。这项新的颠覆性技术已经带来了几个成功案例，主要是在航空航天和生物医学领域。然而，由于粉末原料的限制，缺乏灵活和全面的金属AM研究和生产设施，以及AM设计经验有限的劳动力，进一步扩大到更大的制造业社区受到阻碍。CARDAEE建议通过协助行业成员沿着整个“粉末到零件”开发周期来解决这些研究需求，以解决最终工程应用的基础研究问题。此外，该团队将解决教育和劳动力发展的社会影响，这将对来自不同背景和教育机构的学生的培训产生重大影响。最终，CARDAEE的目标是成为制造商和政府研究实验室的高质量工程师和技术人员的稳定供应商。CARDA 400的使命是通过与中心行业成员的积极合作，改变AM创建的高性能、高质量金属部件的制造。在技术影响方面，CARDA 300将致力于多方面的工作，以便：开发用于生产新合金的AM原料的方法;开发新的方法和技术来理解和解释原位测量数据;使用先进的表征技术来提供将加工方法与部件性能联系起来的三维微观结构和纳米结构信息;开发新的计算方法来预测和理解微观结构的发展，从而更好地设计新材料和工艺;开发创新的测量方法来量化激光-金属相互作用;使用先进的计量学和NDE来提高AM构建质量;开发新的数据分析（机器学习）方法，用于数据解释和科学见解。CARDACTION将吸引整个供应链的潜在成员，包括设备制造商、航空航天和国防公司、工具和模具生产商、材料开发公司、工艺优化设计师和政府实验室。UNL的具体研究重点将利用内布拉斯加州工程增材技术实验室（拥有三个基于激光的混合金属AM系统）和纳米工程研究核心设施内的先进表征仪器。UNL的重点包括：混合金属AM，它定义了二次加工步骤的协同整合（例如，铣削、激光喷丸、超声波喷丸）;激光-金属相互作用的基本原理，这是基于激光的工艺不可或缺的;小批量激光粉末床融合用于新合金开发; AM样品的无损检测，原位和非原位，及其微观结构;该奖项反映了NSF的法定使命，并已被认为是值得通过使用评估的支持，基金会的学术价值和更广泛的影响评审标准。

This award funds planning activities at University of Nebraska-Lincoln (UNL)for a proposed three-site industry university cooperative research center (IUCRC), the Center to Accelerate Recipe Development for Additive Manufacturing of Metals (CARDAMOM). CARDAMOM is led by the University of Nebraska-Lincoln in partnership with the University of Texas Rio Grande Valley, and the University of Alabama. Metal additive manufacturing (AM), also known as metal 3D printing, is transforming manufacturing within the United States and around the world. This new disruptive technology has already resulted in several success stories, primarily within the aerospace and biomedical sectors. However, further expansion to the greater manufacturing community is impeded by limitations in powder feedstocks, a lack of access to flexible and comprehensive metal AM research and production facilities, and a workforce with limited AM design experience. CARDAMOM proposes to address these research needs by assisting industry members along the entire “powder-to-part” development cycle to address fundamental research questions with a view toward final engineering applications. In addition, the team will address societal impacts of education and workforce development which will have a significant impact on the training of students from diverse backgrounds and educational institutions. Eventually, CARDAMOM aims to be a steady provider of high-quality engineers and technicians to manufacturers and government research laboratories. The mission of CARDAMOM is to transform the manufacturing of high-performance, quality metallic components created with AM via active engagement with Center industry members. With respect to the technological impacts, CARDAMOM will pursue multiple thrusts in order to: develop methods for production of AM feedstocks for new alloys; develop new methods and techniques to understand and interpret in situ measurement data; use advanced characterization to provide 3D microstructural and nanostructural information that connects processing methods to component performance; develop new computational methods to predict and understand microstructural development, leading to better ways to design new materials and processes; develop innovative measurements to quantify laser-metal interactions; use advanced metrology and NDE to enhance AM build quality; develop new data analytical (machine learning) approaches for data interpretation and scientific insight. CARDAMOM will engage potential members across the full supply chain, including equipment manufacturers, aerospace and defense companies, tool and die producers, materials development companies, process optimization designers, and government laboratories. The specific research thrusts at UNL will utilize the Nebraska Engineering Additive Technologies Laboratory (with three laser-based hybrid metal AM systems) and the advanced characterization instrumentation within the Nano-Engineering Research Core Facility. The UNL thrusts include: hybrid metal AM which defines the synergistic integration of secondary processing steps (e.g., milling, laser peening, ultrasonic peening) with the additive steps; the fundamentals of laser-metal interactions which are integral to laser-based processes; small-batch laser powder bed fusion for new alloy development; NDE of AM samples, both in situ and ex situ, and their microstructures; computational models of AM microstructures.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.