CAREER: Designing Engineered Systems for Resilience and Sustainability by Considering Post-design Retrofits

随着工程系统的复杂性增加和预计使用寿命延长，通过部分系统维修或升级进行改造已成为保持所需系统性能的成本有效的手段。然而，需要更好地了解系统改造将如何影响故障弹性和环境可持续性，以及如何调整弹性和可持续工程系统的设计以考虑到频繁的改造活动。这个教师早期职业发展（CAREER）奖支持基础研究，将提供这种缺失的知识。 具体而言，它将开发一个新的设计框架，其中包括用于系统建模，分析和设计的工具，这些工具可用于在考虑系统改造的同时实现系统设计中的弹性和增强可持续性。这项研究的结果可能会刺激几个技术先进的行业，如绿色能源，航空或汽车行业，遭受灾难性的故障和高维护成本在后系统设计阶段的增长。 通过提供新的设计方法和工具来实现故障恢复和可持续性增强，可以显著降低此类系统的总寿命成本。这项研究为工程设计，故障预测和可持续性领域的研究人员提供了独特的机会，并将在跨学科的学习环境中培养学生。教育举措与广泛的传播和推广计划将吸引学生，特别是代表性不足的群体，工程职业。本研究开拓了一个新的设计范式，弹性和可持续性的系统功能，故障预测和系统改造的设计集成在一个统一的设计框架。这种努力在过去一直被忽视，因为故障预测和系统改造的定量分析方法只适用于系统的使用阶段，不适合早期设计。这项研究包括四个方面：1）通过改造实现弹性和可持续性量化，2）预测性弹性和可持续性分析，3）弹性和可持续性的并行设计，以及4）通过与三个领先的行业合作伙伴合作进行设计验证。基础研究将植根于弹性的新理论，并将专门解决工程系统设计中设计后改造的挑战。这项研究将是首次尝试适应弹性的概念，并将其纳入系统设计，同时考虑环境的可持续性。该研究成果将为研究开辟一条新的途径，利用创新方法来设计弹性和可持续的工程系统。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的知识价值进行评估，被认为值得支持影响审查标准。

With increasing complexity and longer projected useful lives for engineered systems, retrofits through partial system repair or upgrade have become a cost effective means to maintain desired system performance. However, there is a need to gain a better understanding of how system retrofits will impact failure resiliency and environmental sustainability, and further how the design of resilient and sustainable engineered system must be adapted to take frequent retrofit activities into account. This Faculty Early Career Development (CAREER) award supports fundamental research that will provide this missing knowledge. Specifically, it will develop of a novel design framework with tools for system modeling, analysis and design that can be used to concurrently realize resiliency and enhance sustainability in system designs while considering system retrofits. Results from this research will likely stimulate growth in several technologically advanced industries such as the green energy, aviation, or automotive industries, which suffer from catastrophic failures and high maintenance costs at the post system design stage. By providing new design methods and tools for failure resilient realization and sustainability enhancement, the total lifetime cost of ownership of such systems can likely be reduced significantly. This research offers unique opportunities for researchers across the fields of engineering design, failure prognosis and sustainability, and will train students in an interdisciplinary learning environment. Educational initiatives with a wide range of dissemination and outreach programs will attract students, especially underrepresented groups, to engineering careers. This research pioneers a new design paradigm for resiliency and sustainability by integrating design of system functions, failure prognosis, and system retrofits in a unified design framework. Such an effort has been neglected in the past because quantitative analysis methods for failure prognosis and system retrofits were only applicable in the use-phase of a system and were not suited for early-stage design. This research encompasses four thrusts: 1) resiliency and sustainability quantification with retrofits, 2) predictive resiliency and sustainability analysis, 3) concurrent design for resiliency and sustainability, and 4) design validation through collaborations with three leading industry partners. The fundamental research will be rooted in a new theory for resilience and will specifically address the challenge of post-design retrofits in engineering system design. This research will be the first attempt to adapt the concept of resilience and integrate it into system design while simultaneously considering environmental sustainability. The research outcome will open up a new avenue for research to exploit innovative methodologies leading to design of resilient and sustainable engineered systems.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.