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.

在过去的五年中，增材制造业（AM）已从利基纪律发展到GE，Pratt＆Whitney和Rolls Royce等跨国公司，用于制造关键的结构组件，例如制造Jet制造的组件。引擎。这些新的AM技术为制造商提供了减少开发时间，大规模定制以及制造以前无法使用的零件的能力。尽管新AM技术的开发会加速，但关键问题继续限制其在制造业社区中的广泛采用，尤其是对于必须达到苛刻财产要求的结构金属部分。 AM的一个特殊挑战是过程控制。由于设计师/工程师可用的大量流程变量，因此经验的试验方法是流程设计的风险和不切实际。为了确保在AM制造中可靠地满足形状和财产要求，必须在生产链中采用基于物理的预测模型。在此提案中，我们旨在通过开发经过验证的，完全耦合的整个过程模型来推动金属AM生产的最新生产，该模型将机器控制与材料微观结构和属性联系起来。这项工作将与当地的加拿大公司Pavac Industries Inc.合作，该公司是电子束处理的国际领导者。这里提出的工作将支持对AM制造的新基本理解，以及基于PAVAC现有的专业知识的新AM技术的开发。