Shock Wave Induced Freeform Technique (SWIFT) for Manufacturing of Diamond Microtools

该奖项的研究目标是将冷烧结原理应用于金刚石微工具的自由形状制造，并确定高宽比、表面粗糙度、边缘半径和烧结参数之间的定量关系。该方法包括利用激光诱导冲击波通过逐层添加制造来机械烧结纳米金刚石粉末，并利用多尺度物理模型来验证实验数据。利用飞秒脉冲激光对各种自由几何形状的三维微零件进行后精加工，可以实现精密、光滑、精确的几何加工。更广泛的影响包括降低制造成本、易于获得和提高钻石微工具的性能。另一个好处是能够构建多功能材料，以定制所需的特性。研究将促进行业采用新的制造工艺，以解决与钻石微工具相关的生产率和质量问题。教育和外联成果包括对先进制造业领域的妇女和少数族裔研究生进行培训，将研究数据纳入制造业课程，通过让本科生参与研究团队进行研究培训，通过期刊出版物、会议、行业访问和研讨会传播研究成果，以及创建一个网站来报告新添加剂制造系统的结果。

The research objective of the award is to apply the principles of cold sintering for the freeform fabrication of diamond microtools and determine quantitative relationships among aspect ratio, surface roughness, edge radius and sintering parameters. The approach consists of employing laser-induced shock waves to mechanically sinter nanodiamond powders through layer-by-layer additive manufacturing and utilizing multiscale physics models to validate the experimental data. Three-dimensional microparts in various freeform geometries will be fabricated with a post-finishing treatment by the femtosecond pulsed laser for close tolerance, smooth finish and precise geometry. The broader impacts include a reduction in the manufacturing cost, easy availability and enhanced performance of diamond microtools. An additional benefit is the capability to build multifunctional materials for tailoring the required properties. Research will facilitate the industry adoption of the new manufacturing process to address the productivity and quality issues associated with diamond microtools. Education and outreach outcomes include training of women and minority graduate students in advanced manufacturing field, incorporation of the research data into manufacturing courses, undergraduates research training by involving them in the research team, dissemination of the research results through journal publications, conferences, industry visits and workshops, and creation of a website to report results of the new additive manufacturing system.