GOALI: A Hybrid Failure Approach using Digital Image Correlation for Functionally Graded Thin-Bonded Overlays

在美国，有超过260万英里的铺面道路，其中94.6%有沥青混凝土路面，相当于每年300亿美元的投资。沥青加铺层的过早断裂会给社会带来重大的经济和环境负担，并会降低我们国家的安全。高速公路和机场路面基础设施。在GOALI研究中，大学和工业之间拟议的合作伙伴关系将导致先进的路面修复系统（薄的粘合覆盖层）的开发，这些系统是可回收的，可持续的，并提供安全的骑行表面。拟议的工作计划将采用混合方法，包括先进的实验室测试和仪器，开发新的损坏模型，模拟路面系统，并根据现场性能校准模型。 该项目还将改进如何使用数字成像来理解复杂、分层、复合基础结构材料系统中的断裂行为。除了上述发现和理解方面的进步外，拟议项目的更广泛影响是：通过将研究成果纳入大学课程，促进教学、培训和学习;通过少数民族外联方案和世界青年科学和工程方案，扩大了代表性不足群体对研究的参与;在期刊上以及通过会议介绍和讲习班广泛传播研究成果。拟议的研究对社会的好处包括：一个更可持续的方法来路面维修，降低生命周期成本，并提高公路安全。通过与工业界的伙伴关系，将根据实地项目验证新技术，并通过区域讲习班向从业人员转让。

In the United States, there are over 2.6 million miles of paved roads 94.6% of which have an asphalt concrete surface, representing a $30 billion annual investment. Premature fracturing of asphalt overlays poses a significant economic and environmental burden to society and can reduce the safety of our nation?s highway and airfield pavement infrastructure. The proposed partnership between university and industry in this GOALI study will lead to the development of advanced pavement rehabilitation systems (thin, bonded overlays) that are recyclable, sustainable, and provide a safe riding surface. The proposed work plan will utilize a hybrid approach, involving advanced laboratory testing and instrumentation, development of new damage models, simulation of pavement systems, and calibration of models to field performance. This project will also improve how digital imaging can be used to understand fracture behavior in complex, layered, composite infrastructure material systems.Besides the aforementioned advancement in discovery and understanding, the broader impacts of the proposed project are: the promotion of teaching, training, and learning, through incorporation of research results in university courses; broadened participation in research by underrepresented groups through Minority Outreach Program and the Worldwide Youth in Science and Engineering Program; and; broad dissemination of research results in journals, and through conference presentations, and workshops. The benefits of the proposed research to society include: a more sustainable approach to pavement maintenance; reduced life cycle costs, and; improved highway safety. Through partnership with industry, the new techniques will be validated against field projects and transferred to practitioners through regional workshops.