NSF East Asia and Pacific Summer Institute (EAPSI) for FY 2013 in Japan

这项行动资助了密歇根大学安娜堡分校的安德鲁·罗伯特·伯顿于2013年夏天在日本京都大学防灾研究所开展一项工程研究项目。该项目的题目是“用于钢架连接处损伤检测的图案薄膜传感器”。主持会议的科学家是中岛正芳。最近地震造成的破坏要求对关键基础设施进行性能监测的新方法。最重要的是，事后损害评估的目标是可靠的，定量的数据，以知情的结构安全特征。该项目通过开发图图化碳纳米管（CNT）薄膜传感器来解决这一挑战，该传感器专门用于检测钢框架连接中的特定失效模式。这些薄膜传感器是在密歇根大学安娜堡分校的Lurie纳米制造设施中通过光学光刻技术在聚对二甲苯基板上绘制碳纳米管聚合物薄膜，然后通过微机电系统中常见的其他工艺进行检测而制造出来的。这些模式是针对地震荷载下钢框架连接所经历的损伤行为的电灵敏度而设计的。这些电影正在京都大学的一个部分比例的钢测试框架上进行测试。它们是环氧树脂粘合到框架连接，然后连接到无线传感器网络进行数据采集。大型振动台用于模拟这些框架上的地震事件。在事件发生期间和事件发生后，从这些传感器收集数据，并将每次测试的传感器信号与观察到的结构损坏进行分析。该项目提供了两个非常有价值的结果，碳纳米管薄膜将达到实际民用基础设施应用所需的规模，并且将解决快速地震后损伤检测的需求。EAPSI奖学金的广泛影响包括为研究员提供美国以外的第一手研究经验；介绍该地区的科学、科学政策和科学基础设施；以及对社会、文化和语言的了解。这些活动符合美国国家科学基金会的目标，即在其科学家、工程师和教育工作者的职业生涯早期培养国际合作，从而确保美国科学劳动力具有全球意识。此外，该项目将激发后续的伙伴关系，促进跨国人际关系，为全球研究提供基础设施。最直接的是，这将有助于两个社会实现通过关键基础设施的性能特征来提高公共安全的共同目标。该项目完成后，将通过研究员的演讲和教育外展，加强对工程的理解，远远超出所涉及的范围。

This action funds Andrew Robert Burton of the University of Michigan, Ann Arbor to conduct a research project in Engineering during the summer of 2013 at the Disaster Prevention Research Institute of Kyoto University in Kyoto, Japan. The project title is "A Patterned Thin Film Sensor for Damage Detection in Steel Frame Connections." The host scientist is Masayoshi Nakashima.The destruction caused by recent earthquakes has demanded new methods for performance monitoring of critical infrastructure. Paramount to this goal of post-event damage assessment is reliable, quantitative data for informed structural safety characterizations. This project addresses this challenge through the development of patterned carbon nanotube (CNT) thin film sensors tailored to detect specific failure modes in steel frame connections. These thin film sensors are being created in the Lurie Nanofabrication Facility at the University of Michigan, Ann Arbor by patterning CNT-polymer films on parylene substrates using optical lithography and then instrumented through other processes common to microelectromechanical systems. These patterns are being designed for electrical sensitivity that is specific to damage behaviors experienced by steel frame connections under seismic loading. The films are being tested at Kyoto University on a partial-scale steel test frame. They are epoxy bonded to the frame connections and then connected to wireless sensor networks for data acquisition. A large-scale shake table is used to simulate a seismic event on these frames. Data is collected from these sensors during and directly following the event and the sensor signals from each test is being analyzed in relation to the observed structural damage. This project provides two highly-valuable results as CNT thin films will reach a scale necessary for practical civil infrastructure applications and the need for rapid post-seismic damage detection will be addressed.Broader impacts of an EAPSI fellowship include providing the Fellow a first-hand research experience outside the U.S.; an introduction to the science, science policy, and scientific infrastructure of the respective location; and an orientation to the society, culture and language. These activities meet the NSF goal to educate for international collaborations early in the career of its scientists, engineers, and educators, thus ensuring a globally aware U.S. scientific workforce. Furthermore, this project will spark subsequent partnerships facilitating transnational human connections that provide the basic infrastructure for global research. Most immediately this will aid both societies in the shared ambition for increased public safety through performance characterization of critical infrastructure. Following completion, the project will strengthen engineering understanding, far beyond those involved, through presentations and educational outreach by the Fellow.