CAREER: Enhancing Environmental and Economic Sustainability of Additive Manufacturing-based Remanufacturing

这项学院早期职业发展(Career)补助金将通过加强基于添加剂制造的再制造的环境和经济可持续性，促进国家繁荣和经济福利。添加制造方法包括焊接、电镀和表面重建以及3D打印等工艺。在过去的十年里，再制造已经成为实现可持续制造业的关键要素。加法制造(AM)的最新进展为再制造提供了传统制造工艺无法实现的增强能力。然而，与卢旺达AM(卢旺达AM)进行再制造伴随着确保支持卢旺达AM的供应链有效和经济地运行的挑战。卢旺达航空公司目前的做法主要涉及报废产品，其中许多产品由于严重损坏而不能再制造。在确定是否值得再制造时，环境影响的巨大不确定性往往被忽视，导致有关决定的稳健性。该项目将研究支持主动维护的方法，以避免灾难性的寿命终结故障。该奖项支持为学生提供教育机会，包括接触代表人数不足的少数群体。该奖项旨在通过创新的积极主动的再制造和资源共享来改善卢旺达的环境和经济可持续性。追求三个具体目标：(1)通过数据驱动和基于物理的模型来评估和预测后卢旺达AM产品的损坏状况，以捕捉内在的潜在破坏过程演变；(2)制定分布式稳健的主动卢旺达AM决策框架，以对冲环境影响中的巨大不确定性；(3)创建基于双边匹配模型的新型卢旺达AM资源共享系统，以将未使用的卢旺达AM资源与需求相匹配，并检查卢旺达AM资源共享系统中灵活性的影响。这些模式的成功发展将从根本上为卢旺达管理当局带来新的视角，并加速其扩展。该教育和推广计划支持在大学使用3D打印机的实践活动，并通过流动实验室前往该州农村地区。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This Faculty Early Career Development (CAREER) grant will contribute to the advancement of national prosperity and economic welfare by enhancing the environmental and economic sustainability of additive manufacturing-based remanufacturing. Additive manufacturing methods comprise such processes as welding, plating and surface reconstruction, as well as 3-D printing. Remanufacturing has emerged as a critical element for realizing a sustainable manufacturing industry in the past decade. Recent progress in additive manufacturing (AM) provides enhanced capabilities for remanufacturing that cannot be achieved with traditional manufacturing processes. However, remanufacturing with AM (RwAM) is accompanied by challenges to ensure that supply chains supporting RwAM operate effectively and economically. Current RwAM practices mainly concern end-of-life products, many of which are no longer remanufacturable due to severe damage. Large uncertainties in environmental impacts are often ignored when determining whether it is worth remanufacturing, resulting in the robustness of the decisions in question. This project will investigate methods to support proactive maintenance to avoid catastrophic, end-of-life failures. Educational opportunities for students, including outreach to underrepresented minorities, are supported by the award. This award aims to improve the environmental and economic sustainability of RwAM by innovative proactive remanufacturing and resource-sharing. Three specific objectives are pursued: (1) assess and predict the damage condition of a post-RwAM product through data-driven and physics-based models to capture the inherent latent damage process evolution; (2) develop a distributionally-robust proactive RwAM decision framework to hedge against large uncertainties in environmental impacts; (3) create a novel RwAM resource-sharing system based on two-sided matching models to match the unused RwAM resources with demand and examine the impact of flexibility in the RwAM resource-sharing system. Successful development of these models will lead to fundamentally new perspectives on RwAM and accelerate its expansion. The education and outreach plan supports hands-on activities with 3D printers at the university and to rural areas of the state through a traveling laboratory.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.