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: $ 11.57万
• 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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=579836
• 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（AM）已经从一个小众学科发展成为通用电气（GE）、普惠（Pratt & Whitney）和劳斯莱斯（Rolls Royce）等跨国公司所采用的一种技术，用于制造喷气发动机等关键结构部件。这些新的增材制造技术为制造商提供了更短的开发时间、大规模定制和制造以前不可能实现的零件的能力。虽然新增材制造技术的发展加速，但关键问题仍然限制了其在制造业中的广泛应用，特别是对于必须达到苛刻性能要求的结构金属部件。