PECASE: Nanoengineered Sensing Skins for Structural Health Monitoring - An Integrated Research and Education Career Experience

PECASE：用于结构健康监测的纳米工程传感皮肤 - 综合研究和教育职业体验

• 批准号: 0846256
• 负责人: Jerome Lynch
• 金额: $ 40万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-15 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846256&HistoricalAwards=false
• 关键词: PECASE; Nanoengineered; Sensing; Skins; Structural

Structural health monitoring (SHM) systems offer cost-effective health management solutions for aging civil infrastructure systems. Current SHM systems are characterized by the use of sensors that measure behavior at a specific point in the system. In contrast, this proposal explores the creation of a distributed sensing skin that provides direct spatial mapping of damage. The sensor paradigm proposed is inspired by the human dermatological system which offers distributed, multimodal sensing of the environment. Controlled molecular assembly employing carbon nanotubes and polyelectrolytes yields a homogenous multi-layered thin film in which four sensing modalities are simultaneously embedded: strain, pH, humidity and ionic uptake. To measure the spatial distribution of conductivity changes corresponding to each stimulus, electrical impedance tomography is adopted. Smart structure technology can also serve as an exciting backdrop for teaching math and science to middle-school students. To address the lack of diversity in engineering and to develop an awareness of the engineering profession in young underrepresented students, a middle-school outreach program is proposed for inner-city Detroit. Hands-on learning modules that explore the scientific principles behind the operation of sensors and the formation of damage in structures will be created. In addition, a professional short-course on smart structure technology will be created to recruit professional engineers to serve as outreach mentors.

结构健康监测(SHM)系统为老化的民用基础设施系统提供了经济高效的健康管理解决方案。当前的SHM系统的特点是使用传感器来测量系统中特定点处的行为。相比之下，这项建议探索了创建一个分布式传感皮肤，提供直接的损伤空间映射。提出的传感器范例的灵感来自于人类皮肤病系统，该系统提供对环境的分布式、多模式感知。利用碳纳米管和聚电解质的受控分子组装产生了一种均匀的多层薄膜，其中同时嵌入了四种传感模式：应变、pH、湿度和离子吸收。为了测量每个刺激对应的电导率变化的空间分布，采用了电阻抗层析成像。智能结构技术也可以作为向中学生教授数学和科学的令人兴奋的背景。为了解决工程学缺乏多样性的问题，并在代表人数不足的年轻学生中培养对工程专业的认识，有人提议在底特律市中心开展一个中学推广计划。将创建实践学习模块，探索传感器操作背后的科学原理和结构中损伤的形成。此外，还将开设一个关于智能结构技术的专业短期课程，以招聘专业工程师担任外展导师。