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

随着工程系统复杂性的增加和预期使用寿命的延长，通过部分系统维修或升级进行改造已成为维持预期系统性能的一种经济有效的手段。然而，有必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，以及如何设计具有弹性和可持续性的工程系统，以适应频繁的改造活动。该学院早期职业发展（Career）奖支持将提供这些缺失知识的基础研究。具体来说，它将开发一种新的设计框架，其中包含用于系统建模、分析和设计的工具，可用于同时实现系统设计中的弹性和增强可持续性，同时考虑系统改造。这项研究的结果可能会刺激一些技术先进行业的增长，如绿色能源、航空或汽车行业，这些行业在后期系统设计阶段遭受灾难性故障和高维护成本。通过提供新的设计方法和工具来实现故障弹性和增强可持续性，这些系统的总生命周期成本可能会显著降低。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。具有广泛传播和推广计划的教育举措将吸引学生，特别是代表性不足的群体，从事工程职业。本研究通过在统一的设计框架中整合系统功能设计、故障预测和系统改造，开创了一种新的弹性和可持续性设计范式。这种努力在过去被忽视了，因为用于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，而不适合早期设计。本研究包括四个重点：1)弹性和可持续性量化与改造，2)预测性弹性和可持续性分析，3)弹性和可持续性并行设计，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。基础研究将植根于一种新的弹性理论，并将具体解决工程系统设计中设计后改造的挑战。本研究将首次尝试将弹性的概念融入系统设计，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，利用创新的方法来设计有弹性和可持续的工程系统。

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.