Collaborative Research: Sensor Fusion for Comprehensive Health Monitoring of Complex Infrastructure Systems - An International Testbed Opportunity

大型基础设施系统的退化是一个常见而复杂的问题，需要创新的传感器技术来解决。该合作提案的重点是整合五种新兴传感器技术，当融合到结构健康监测（SHM）系统中时，有可能准确识别结构损坏。在局部尺度上，提出了压电涂料用于断裂被动声发射传感。此外，将探索压电陶瓷元件对易开裂钢构件的主动超声检测。提出了一种用于钢索动应力监测的弹磁传感器。在全球范围内，“智能”无线传感器网络将被用于监测全球系统的响应。最后，一个基于视觉的系统将使用摄像机来测量结构位移。为了从根本上解决制定综合SHM系统的挑战性问题，由韩国科学技术院领导的韩国SHM研究人员组成了一个国际合作团队。国际合作有助于不受限制地进入韩国公路桥梁，可以监测和控制其负载和结构状况。教育是拟议合作的一个组成部分；美国学生将通过美韩之间的学生和教育工作者交流，接受国际研究方面的培训。最后，各个层次的不同学生群体将参与其中，包括代表性不足的研究生和本科生以及地区贫困的K-12学生。

Deterioration of large infrastructure systems is a common, yet complex problem that requires innovative sensor technologies to address. This collaborative proposal is focused upon the integration of five emerging sensor technologies that when fused into a structural health monitoring (SHM) system, have the potential to accurately identify structural distress. At the local-scale, piezoelectric paint is proposed for passive acoustic emission sensing of fracture. In addition, piezoelectric ceramic elements will be explored for active ultrasonic inspection of steel elements prone to cracking. Elasto-magentic (EM) sensors are proposed to monitor dynamic stress in steel cables. At the global-scale, "smart" wireless sensor networks will be adopted to monitor global system responses. Finally, a vision-based system using video cameras will measure structural displacements. To fundamentally address the challenging issues of formulation of a comprehensive SHM system, an international collaboration is formed with a leading team of SHM researchers from Korea, led by Korea Advanced Institute of Science & Technology. The international collaboration facilitates unfettered access to Korean highway bridges in which loading and structural conditions can be monitored and controlled. Education is an integral element of the proposed collaboration; US students will be trained in international research via student and educator exchanges between the US and Korea. Finally, a diverse group of students at all levels will be engaged including underrepresented graduate and undergraduate students as well as regional underprivileged K-12 students.