Funded by a $3M grant from the美国联邦航空管理局(FAA),Auburn University’sNational Center for Additive Manufacturing Excellence(NCAME) is set to commence a two-year project to improve air travel. The NCAME engineers will use the grant to enable the production of metal components for commercial aircraft. Specifically, the team will delve deeper into the 3D printing process and materials to fine-tune the parameters required to print end-use components.
该项目的联合主持调查员史蒂夫·泰勒（Steve Taylor）指出：“通过与FAA的顶级工程师和科学家一起，我们的教职员工组成我们的教职员工，他们是全球性生产金属组件的全球领导者，我们相信我们可以发展新的知识，以开发新知识将帮助工程师设计更安全，更高效的飞机。奥本大学很荣幸与FAA合作。”
Variability in performance
添加剂制造中的一个核心问题是性能雷电竞充值的可变性，在该性能上，相同的零件3D在不同机器上打印的机械性能将具有差异。根据NCAME的说法，当涉及到3D印刷金属零件的微观结构以及随后对疲劳和断裂耐药性的影响时，也缺乏了解。这使得在行业中定义规格和标准非常困难 - 尤其是在航空等部门的紧密控制零件中。
Nima Shamsaei, Director of the NCAME, explains: “This is what I call the ‘Achilles heel’ of additive manufacturing. Such variations make the qualification and certification of AM materials and parts challenging. By understanding the sources of variability, controlling them, or accounting for them, we can generate more reliable materials data and more reliable AM products.”
该项目最终旨在通过标准化结构应用和高级材料的认证过程来提高飞机安全。NCAME成立于2017年，声称是该研究领域的国际领导者。该中心在航天材料上有丰富的经验，是该中心的创始合作伙伴之一ASTM International Additive Manufacturing Center of Excellence。
Auburn’s additive adventures
Auburn’s NCAME has already been involved in a number of aerospace additive manufacturing projects since its inception. Last year, the Center was授予520万美元的合同NASAto apply its expertise to help改善液体火箭发动机的性能through 3D printing. The three-year project is currently enabling the development of “regeneratively cooled” thrust chambers using additive manufacturing, with a technique that should also result in weight savings.
NCAME还以前启动了一个涉及150万美元X射线CT扫描仪的项目。该系统习惯了非破坏性测试3D打印零件确定其可行性是航空航天行业的“关键任务”组成部分。The machine was acquired with a grant from theNational Institute of Standards and Technology并被描述为“真正的游戏改变者”Bart Prorok, Director of Auburn’s Analytical Microscopy Center.
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特色图片显示了奥本工程学院：Nima Shamsaei（左）和史蒂夫·泰勒（Steve Taylor）（右）。通过奥本大学的照片。
