Collaborative Research: Frequency Selective Structures for High Sensitivity/High Resolution Damage Identification via Impediographic Tomography

合作研究：通过阻抗成像技术进行高灵敏度/高分辨率损伤识别的频率选择结构

• 批准号: 1232423
• 负责人: Fabio Semperlotti
• 金额: $ 18.46万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1232423&HistoricalAwards=false
• 关键词: Collaborative; Research; Frequency; Selective; Structures

The main objective of this research is to advance the state of the art of Structural Health Monitoring(SHM) systems by creating novel Frequency Selective Structures (FSS) and an FSS-basedImpediographic monitoring technique. The proposed approach is based on the concept of concurrentdesign where the SHM system is no longer retrofitted to an existing structure but, instead, it is designedconcurrently with the structure itself. The system is achieved by implementing the idea of FrequencySelective Structure. FSS exploit the concept of mistuned periodic structures as a general framework tosynthesize dynamically tailored components with self-focusing vibration energy capabilities. The newstructural design approach will allow delivering targeted excitation to the damaged areas even in complex,non homogeneous components. The integration of FSS with the impediographic approach will then enableadvanced damage identification capabilities characterized by high sensitivity, high resolution and aminimized transducer and sensory network.If successful, this research will create a transformative intellectual pathway in synthesizing novel andrealistic structural damage identification methods of the next generation for complex mechanical systems.The technology will have general applicability and could be implemented across the aerospace,mechanical and civil engineering fields leading to the next generation of transportation and infrastructuresystems having advanced health monitoring capabilities. The proposed technology will also eliminate thebarriers that have prevented, to date, the experimental implementation and validation of theimpediographic approach. Experimental findings will allow an unprecedented insight into impediographyand provide critical inputs to foster its application to diverse fields, such as medical imaging, whereremote non-invasive monitoring techniques are of primary importance. The results will be disseminatedthrough classroom teaching, undergraduate and graduate student mentoring, community outreach, andcollaboration with potential users.

这项研究的主要目的是通过创建新颖的频率选择性结构（FSS）和基于FSS的磁膜监测技术来推进结构健康监测（SHM）系统的艺术状态。所提出的方法基于同时设计的概念，在该概念中，SHM系统不再改装为现有结构，而是与结构本身一起设计。该系统是通过实现频率选择性结构的想法来实现的。 FSS利用误以为周期性结构的概念作为一种通用框架，以动态定制的组件具有自我关注的振动能量能力。新闻结构的设计方法将使即使在复杂的，非均匀的组件中，也可以向受损区域传递目标的激发。然后，FSS与功能障碍方法的整合将启用损害的损害识别能力，其特征是高灵敏度，高分辨率，高分辨率和敏化的传感器和感觉网络。导致下一代运输和具有高级健康监测能力的基础设施系统。拟议的技术还将消除迄今为止阻止遗传学方法的实验实施和验证的行为者。实验发现将允许对障碍的空前见解，并提供关键的输入，以促进其应用于不同领域的应用，例如医学成像，无创的监测技术至关重要。结果将是通过课堂教学，本科生和研究生指导，社区外展和与潜在用户进行挑行的情况。