PFI:AIR - TT: Real-Time Fatigue Life Prediction for Decision-making and Asset Management

该PFI：来自塔夫茨大学的AIR技术翻译项目专注于疲劳健康门户（FHP），用于翻译用于在役桥梁结构实时疲劳寿命预测的先进技术。该产品将满足现有的监测和评估美国老化基础设施状况的需求。市场上没有现有的产品提供实时连续的操作疲劳预测和剩余寿命预测，从而为FHP创造了市场利基。随着美国基础设施的老化、恶化，FHP的全面开发、许可和商业化至关重要，因此越来越多的人“负载”（不建议使用重型卡车运输材料和货物）。桥梁的负荷发布对美国市场和经济具有重大的社会和商业影响，并导致美国公路桥梁的维护，改造和更换的巨大成本。智能决策导向的方法可以利用实时测量数据和分析，从而更有效地利用这些信息进行基础设施健康监测和管理。它将支持疲劳评估行业的范式转变，以实现数据驱动和决策导向的工具，该工具可以随着收集到的更多结构响应数据而发展。该方法的目标市场是担心钢构件疲劳导致使用寿命有限的桥梁管理人员和业主。更广泛的目标市场是任何对数据驱动的智能决策感兴趣的结构工程师，这些决策涉及在役结构的疲劳评估，例如输电塔或游乐园游乐设施。在该项目下，两座全尺寸桥梁和另一种结构类型将成为验证拟议方法的案例研究，从而改进分析方法和实验技术，以应对商业化的挑战。该项目将产生一个具有概念验证的FHP原型软件包，以满足改善基础设施资产管理决策的需要。它将整合结构健康监测概念、分析疲劳寿命预测和先进的非参数统计方法，以实现实时疲劳评估和预测，用于决策和资产管理。该项目解决了以下实时决策的技术差距：（1）高效可靠的无线传感器，数据采集，云计算和数据通信，（2）用于基础设施疲劳评估的非参数决策导向概率操作方法，以及（3）预测和预测剩余基础设施疲劳寿命。FHP具有以下独特功能：可变疲劳应力范围、操作测量应变、未知车辆信息、损伤评估假设检验以及使用可提高系统安全性的警报系统。这些功能提供了以下优势：使用实时测量的应变进行实时结构疲劳寿命评估，并使用高效的计算方法，与该市场领域的领先竞争产品和技术相比，这些方法具有成本效益。这项研究合作涉及两所大学（塔夫茨大学和新罕布什尔州大学）的三个部门（土木工程，计算机科学和经济学），将努力包括研究生，本科生和高中水平（学生和教师）的代表性不足的群体。此外，参与该项目的人员将通过产品开发、概念验证、顶点项目和知识产权许可流程获得创新、创业和技术翻译经验。该项目的学术和工业合作伙伴期待着共同努力，将研究发现转化为市场上可用的产品。牵头机构是塔夫茨大学及其土木与环境工程系，计算机科学系和经济系。主要分包商是新罕布什尔州大学，目前正在进行PFI BIC项目，即生活桥梁：智能、以用户为中心的交通基础设施的未来，该项目将用于FHP的概念验证。主要工业合作伙伴是Bridge Diagnostic Inc.。(BDI)将研究发现转化为市场可用的产品，并与FHP的消费者联系。更广泛的合作伙伴是六旗新英格兰，新罕布什尔州交通部，和马萨诸塞州交通部。

This PFI: AIR Technology Translation project from Tufts University focuses on a Fatigue Health Portal (FHP), for translation of an advanced technology for real-time fatigue life prediction of in-service bridge structures. This product would fill an existing need to monitor and assess the conditions of aging US infrastructures. No existing product on the market offers real-time continuous operational fatigue prognosis and remaining life predictions, thus creating a market niche for the FHP. Full development, licensing, and commercialization of the FHP is vital as the US infrastructure ages, deteriorates and is thus increasingly "load-posted" (not recommended for transportation of materials and goods using heavier trucks). Load posting of bridges has major societal and commercial impact on the US market and economy and results in enormous costs of maintenance, retrofit, and replacement of the US highway bridges. An intelligent decision-oriented methodology can exploit real-time measured data and analysis, resulting in a more effective use of such information for infrastructure health monitoring and management. It will support a paradigm shift in the fatigue assessment profession to enable a data-driven and decision-oriented tool that can evolve as more structural response data is collected.The target market for this methodology is bridge managers and owners concerned with limited service life due to fatigue of steel elements. The broader target market is any structural engineer interested in data-driven intelligent decision-making with respect to fatigue assessment of in-service structures, such as transmission towers or amusement park rides. Under this project, two full-scale bridges and one other structural type will be the case studies for validation of the proposed methodologies, allowing refinement of the analytical methods and experimental techniques to address challenges of commercialization. The project will result in a FHP prototype software package with proof-of-concept that meets the need for improved decision-making in infrastructure asset management. It will integrate structural health monitoring concepts, analytical fatigue life prediction, and advanced nonparametric statistical methods to enable real-time fatigue assessment and prognosis to be used for decision-making and asset management. This project addresses the following technology gaps for real-time decision-making: (1) efficient and reliable wireless sensors, data acquisition, cloud computing, and data communications, (2) nonparametric decision-oriented probabilistic operational methods for infrastructure fatigue assessments, and (3) prognosis and prediction of remaining infrastructure fatigue life. The FHP has the following unique features: variable fatigue stress ranges, operational measured strains, unknown vehicle information, hypothesis testing for damage assessment, and use of an alert system that improves system safety. These features provide the following advantages: real-time structural fatigue life assessment using real-time measured strains, and use of efficient computational methodologies, which are cost effective when compared to the leading competing products and technology in this market space. This research collaboration, which involves three departments (Civil Engineering, Computer Science, and Economics) at two universities (Tufts University and University of New Hampshire), will strive to include underrepresented groups at the graduate, undergraduate, and high school level (students and teachers). In addition, personnel involved in this project will receive innovation, entrepreneurship, and technology translation experiences through product development, proof of concept, capstone projects, and licensing process of the IP. The academic and industrial partners of this project are looking forward to working together to transform research discoveries into market-ready products.The lead institution is Tufts University with its departments of Civil and Environmental Engineering, Computer Science, and Economics. The primary subcontractor is the University of New Hampshire, with a current PFI BIC project, The Living Bridge: The Future of Smart, User-Centered Transportation Infrastructure, which will be used for proof of concept of the FHP. Primary industrial partner is Bridge Diagnostic Inc. (BDI) to transform research discoveries into market-ready products and contact with consumers of FHP. Broader context partners are Six Flags New England, New Hampshire Department of Transportation, and Massachusetts Department of Transportation.