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GOALI: Additive Manufacturing of Multi-material Structures

GOALI：多材料结构的增材制造

基本信息

批准号：
1934230
负责人：
Amit Bandyopadhyay
金额：
$ 49.87万
依托单位：
Washington State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-08-01 至 2025-07-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1934230&HistoricalAwards=false
关键词：
GOALI Additive Manufacturing Multi material

项目摘要

Multi-material structures with varying functionality can offer unique solutions to engineering problems compared to single-material, multi-part structures. However, traditional approaches to manufacture multi-material structures involve separate processes for each part, followed by joining operation/s. Such approaches are cost intensive and failure prone. In many cases, incompatible materials cannot be processed using such approaches. This Grant Opportunities for Academic Liaison with Industry (GOALI) award will enable fundamental research to understand the influence of computer-aided microstructural designs and compositional variations at multi-material interfaces by measuring physical, mechanical, thermal and biological properties to solve long-standing multi-material manufacturing challenges for structures used in aerospace and biomedical applications. Multi-material additive manufacturing structures can be designed and manufactured with performance improvements in user-defined locations, with variations in properties like hardness, corrosion resistance, and environmental adaptation selected exactly where needed. Such an approach can allow users, designers and manufacturers to create innovative component designs with multi-functionality. and can help the US to lead in the next generation manufacturing of a variety of multifunctional multi-material structures. The multi-disciplinary approach will help broaden participation of underrepresented groups in research and training to positively impact engineering education. Multi-material additive manufacturing offers a new paradigm in materials processing. However, there are no manufacturing guidelines for design, processing and characterization of multi-material additive manufacturing. This research will address critical scientific challenges and fill the knowledge gaps related to multi-material additive manufacturing using a directed energy deposition-based additive manufacturing system. The research team will understand mechanisms for minimizing diffusion of incompatible ions to prevent metallurgical failures at interfaces through evaluation of physical, mechanical, thermal and biological properties. The research team will also do preliminary finite element analysis to understand how thermal stress accumulation influences microstructure during additive manufacturing. Direct input from experts in the additive manufacturing equipment manufacturing industry will be a valuable tool towards preparing students to face real world engineering challenges.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.

与单一材料、多部件结构相比，具有不同功能的多材料结构可以为工程问题提供独特的解决方案。然而，制造多材料结构的传统方法涉及用于每个部件的单独工艺，随后是接合操作。这种方法成本高且容易失败。在许多情况下，不相容的材料不能使用这种方法处理。该奖项将使基础研究能够通过测量物理，机械，热和生物特性来了解计算机辅助微结构设计和成分变化对多材料界面的影响，以解决长期存在的多材料制造挑战用于航空航天和生物医学应用的结构。多材料增材制造结构可以在用户定义的位置进行设计和制造，并在需要时精确选择硬度，耐腐蚀性和环境适应性等属性的变化。这种方法可以让用户、设计师和制造商创建具有多功能的创新组件设计。可以帮助美国在下一代制造多种多功能多材料结构方面处于领先地位。多学科方法将有助于扩大代表性不足的群体在研究和培训中的参与，以积极影响工程教育。多材料增材制造为材料加工提供了新的范例。然而，没有针对多材料增材制造的设计、加工和表征的制造指南。这项研究将解决关键的科学挑战，并填补与使用基于定向能量沉积的增材制造系统的多材料增材制造相关的知识空白。研究小组将了解通过评估物理、机械、热和生物性能来最大限度地减少不相容离子扩散以防止界面冶金失效的机制。研究小组还将进行初步的有限元分析，以了解热应力积累如何影响增材制造过程中的微观结构。增材制造设备制造行业专家的直接意见将成为帮助学生准备面对真实的世界工程挑战的宝贵工具。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响力进行评估而被认为值得支持。审查标准。