MRI: Instrument Development: Additive Rapid Prototyping Instrument (ARPI)

核磁共振成像：用于先进制造研究的加法快速成型仪器的开发加法制造(AM)--从数字计算机模型制造三维物体的过程--有可能彻底改变制造物品的方式。它使设计驱动和个性化制造以及复杂部件和结构的生产成为可能。这项快速发展的技术正被从医疗保健到国防等行业的公司使用，但目前的AM工艺在可制造部件的精度和质量方面存在限制。这一重大研究仪器奖将支持开发具有多种AM操作和实时先进传感和控制功能的集成添加剂快速成型仪器。这将使从不同材料制造具有复杂功能和增强机械性能的产品的基础研究成为可能。该奖项推进了AM和基础多学科研究和教育的前沿，并促进了技术转让，以增强美国制造业的竞争力。该仪器的显著特点将是它能够实现多物理、多材料和多尺度工艺，以提高精度、表面光洁度和性能。这一多功能模块化系统将执行激光工程网络或粉末床融合，具有用于提高精度和性能的子系统，以及在通用指挥和控制环境中运行的过程监控。该仪器将几种加工能源与计算机数控精度和高速高灵敏度仪器集成在一起。需要解决的主要科学和技术挑战是实现综合系统，以及在这种环境中理解混合过程和过程链并对其进行建模。结合传感器和仪器以作为时间和位置的函数对相关物理过程参数进行现场实时测量，对于理解加工能源和工件之间发生的相互作用至关重要。这些基础知识为推进添加剂制造的前沿提供了一个关键的垫脚石。

MRI: Development of an Additive Rapid Prototyping Instrument for Advanced Manufacturing ResearchAdditive manufacturing (AM)-- the process of making a three-dimensional object from a digital computer model-- has the potential to revolutionize the way things are made. It enables design-driven and personalized manufacturing and the production of complex parts and structures. This rapidly evolving technology is being used by companies in industries ranging from healthcare to national defense but with current AM processes there are limitations in the accuracy and quality of the parts that can be made. This Major Research Instrumentation award will support the development of an integrated Additive Rapid Prototyping Instrument with multiple AM operations and real-time advanced sensing and control functions. This will enable fundamental research on the fabrication of products from different materials with intricate features and enhanced mechanical properties. This award advances the frontiers of AM and fundamental multidisciplinary research and education and promotes technology transfer to enhance the competitiveness of the US manufacturing sector.The significant feature of this instrument will be its ability to realize multi-physics, multi-material and multi-scale processes for improved accuracy, surface finish, and properties. This multi-functional modular system will perform laser-engineered net or powder bed fusion, with subsystems for accuracy and property enhancements, and process monitoring, operating in a common command-and-control environment. The instrument will integrate several processing energy sources with computer numerically-controlled precision and high-speed high-sensitivity instrumentation. The dominant scientific and technological challenges to be addressed are the realization of the integrated system and the understanding and modeling of hybrid processes and process chains in such an environment. Incorporation of sensors and instrumentation for in situ real-time measurements of relevant physical process parameters as a function of time and position will be crucial to the understanding of interactions that take place between processing energy sources and the workpiece. This fundamental knowledge provides a key stepping stone in advancing the frontiers of additive manufacturing.