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

这项教师早期职业发展（Career）资助将通过增强基于增材制造的再制造的环境和经济可持续性，为促进国家繁荣和经济福利做出贡献。增材制造方法包括焊接、电镀和表面重建以及3d打印等过程。在过去的十年中，再制造已经成为实现制造业可持续发展的关键因素。增材制造（AM）的最新进展为传统制造工艺无法实现的再制造提供了增强的能力。然而，AM再制造（RwAM）伴随着挑战，以确保支持RwAM的供应链有效和经济地运作。目前的RwAM实践主要关注报废产品，其中许多产品由于严重损坏而无法再制造。在确定是否值得再制造时，往往忽略了环境影响的巨大不确定性，从而导致相关决策的稳健性。该项目将研究支持主动维护的方法，以避免灾难性的、寿命终止的故障。该奖项支持学生的教育机会，包括向未被充分代表的少数民族伸出援手。该奖项旨在通过创新的主动再制造和资源共享来改善RwAM的环境和经济可持续性。具体目标有三个：(1)通过数据驱动和基于物理的模型评估和预测后rwam产品的损伤状况，以捕获固有的潜在损伤过程演变；(2)建立一个分布式稳健的主动RwAM决策框架，以对冲环境影响的巨大不确定性；(3)建立基于双边匹配模型的新型RwAM资源共享系统，将未使用的RwAM资源与需求进行匹配，并考察灵活性对RwAM资源共享系统的影响。这些模型的成功开发将从根本上为RwAM带来新的视角，并加速其扩展。教育和推广计划支持在大学使用3D打印机的实践活动，并通过一个旅行实验室到该州的农村地区。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值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.