Through-process modelling for optimized electron beam additive manufacturing

优化电子束增材制造的全流程建模

• 批准号: 478883-2015
• 负责人: Sinclair, Chadwick
• 金额: $ 11.86万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=641884
• 关键词: Through; process; modelling; optimized; electron

Additive manufacturing (AM) has grown over the past five years from a niche discipline to one that is being embraced by multinational companies like GE, Pratt & Whitney and Rolls Royce for the manufacture of critical structural components such as those used in the manufacture of jet engines. These new AM technologies offer manufacturers reduced development times, mass customization and the ability to fabricate parts that were not previously possible. While development of new AM technologies accelerates, key issues continue to limit its wider adoption in the manufacturing community, particularly for structural metallic parts where demanding property requirements must be achieved. A particular challenge for AM is process control. Owing to the large number process variables available to the designer/engineer, empirical trial-and-error approaches to process design are risky and impractical. In order to ensure both shape and property requirements are reliably met in AM fabrication, physically based predictive models must be employed in the production chain. In this proposal we aim to advance the state-of-the-art for metallic AM production through the development of a validated, fully coupled through-process model that links machine control to material microstructure and properties. This work will be performed in collaboration with a local Canadian company, PAVAC Industries Inc., that is an international leader in electron beam processing. The work proposed here will both support new fundamental understanding of AM fabrication as well with the development of a new AM technology based on PAVAC's existing expertise.

增材制造 (AM) 在过去五年中已从一门小众学科发展成为 GE、普惠公司和劳斯莱斯等跨国公司所采用的一门学科，用于制造关键结构部件，例如用于制造喷气机的部件发动机。这些新的增材制造技术为制造商提供了缩短开发时间、大规模定制以及制造以前不可能的零件的能力。虽然新的增材制造技术的开发速度不断加快，但一些关键问题仍然限制着其在制造领域的广泛采用，特别是对于必须满足苛刻性能要求的结构金属零件。增材制造面临的一个特殊挑战是过程控制。由于设计者/工程师可以使用大量的过程变量，过程设计的经验试错方法是有风险且不切实际的。为了确保增材制造制造中可靠地满足形状和性能要求，生产链中必须采用基于物理的预测模型。在本提案中，我们的目标是通过开发经过验证的、完全耦合的全过程模型，将机器控制与材料微观结构和性能联系起来，从而推进金属增材制造生产的最先进水平。这项工作将与加拿大当地公司 PAVAC Industries Inc. 合作进行，该公司是电子束加工领域的国际领先企业。这里提出的工作将支持对增材制造制造的新的基本理解，以及基于 PAVAC 现有专业知识的新增材制造技术的开发。