Next Generation of Additive Manufacturing Technologies

下一代增材制造技术

• 批准号: RGPIN-2015-05166
• 负责人: Toyserkani, Ehsan
• 金额: $ 2.11万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=683193
• 关键词: Next; Generation; Additive; Manufacturing; Technologies

Additive manufacturing (AM), (i.e., 3-dimensional (3D) printing), is an emerging technology slated to change the entire manufacturing enterprise by 2030. Based on Wohler Report (2013), AM activity has increased at a compound annual growth rate (CAGR) of 32.2% over the last three years. This high CAGR has prompted swift and strong investment in AM research and development initiatives by governments across the world (e.g., $1B in USA (2012)). AM is a class of disruptive technologies that builds 3D objects by adding materials layer-by-layer. It has the potential to replace many conventional manufacturing processes as well as to enable the development of new industry practices. Despite the clear benefits of AM, several issues, such as the inability to de-powder small-sized 3D/conformal channels, have hindered full adoption of AM to medicine and engineering applications, in which structures with heterogeneous internal properties are required.***The major objective of this research program is to develop the next generation of AM technologies; to not only address the existing challenges in AM but to foster transformative research through a holistic approach and push the AM technology towards commercialization. This leading-edge research will also promote the training of HQP by enhancing their theoretical and practical engineering skills required for the multidisciplinary area of AM. The output will advance the long-term vision concerning the development of a reliable and inexpensive AM process for the fabrication of structures with a heterogeneous internal architecture.***The short-term objectives of this proposal are to: i) develop a through-process modeling framework for the novel AM process to predict optimum process parameters for desired anisotropic and/or isotropic mechanical properties of AM-made parts; ii) characterize the AM process and the associated engineered sacrificial and target materials to develop complex-shaped structures with heterogeneous porosity/density; iii) develop sensing devices for measuring contact forces during the powder particles spreading, as well as real-time closed-loop control algorithms to improve the process reliability and repeatability; iv) identify correlations of the AM and the post-sintering parameters with final mechanical and porosity properties of AM-made parts; and, v) adopt the developed AM process to lightweight complex-shaped structures for aerospace applications and anatomically-shaped implants for the biomedical sector.***This transformative research will significantly enhance Canada's competitiveness and innovation capacity in this cutting-edge area of advanced manufacturing technology research. The industrial need to adopt AM into their business plans/products is highly significant, thus the outcomes of this project have high potential for providing new leading-edge technologies for domestic and export markets.***

增材制造（AM），（即，3-三维（3D）打印是一项新兴技术，预计到2030年将改变整个制造企业。根据Wohler报告（2013），AM活动在过去三年中以32.2%的复合年增长率（CAGR）增长。这种高复合年增长率促使世界各国政府对增材制造研究和开发计划进行了迅速而有力的投资（例如，美国10亿美元（2012年））。AM是一类颠覆性技术，通过逐层添加材料来构建3D对象。它有可能取代许多传统的制造工艺，并促进新的行业实践的发展。尽管AM具有明显的优势，但一些问题，例如无法对小尺寸3D/适形通道进行脱粉，阻碍了AM在医学和工程应用中的全面采用，其中需要具有异质内部特性的结构。该研究计划的主要目标是开发下一代AM技术;不仅要解决AM中存在的挑战，还要通过整体方法促进变革性研究，并将AM技术推向商业化。这项前沿研究还将通过提高AM多学科领域所需的理论和实践工程技能来促进HQP的培训。该成果将推进关于开发一种可靠且廉价的AM工艺的长期愿景，用于制造具有异质内部架构的结构。该提案的短期目标是：i）开发用于新型AM工艺的贯穿工艺建模框架，以预测AM制造部件的期望各向异性和/或各向同性机械性能的最佳工艺参数; ii）表征AM工艺和相关的工程牺牲和目标材料，以开发具有不均匀孔隙率/密度的复杂形状结构; iii）开发用于测量粉末颗粒散布期间的接触力的传感装置，以及实时闭环控制算法，以提高工艺可靠性和可重复性; iv）识别AM和烧结后参数与AM制造的部件的最终机械和孔隙率性质的相关性;以及，v）采用所开发的AM工艺来制造用于航空航天应用的轻质复杂形状结构和用于生物医学领域的解剖形状植入物。*这项变革性的研究将大大提高加拿大在先进制造技术研究这一前沿领域的竞争力和创新能力。工业需要将增材制造纳入其商业计划/产品是非常重要的，因此该项目的成果具有为国内和出口市场提供新的前沿技术的巨大潜力。