Continuous Piezoelectric Health Monitoring Systems Based on Ultrasonic Guided Waves

基于超声波导波的连续压电健康监测系统

• 批准号: 0900284
• 负责人: Cliff Lissenden
• 金额: $ 32万
• 依托单位: Pennsylvania State Univ University Park
• 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: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0900284&HistoricalAwards=false
• 关键词: Continuous; Piezoelectric; Health; Monitoring; Systems

This proposal will be awarded using funds made available by the American Recovery and Reinvestment Act of 2009 (Public Law 111-5), and meets the requirements established in Section 2 of the White House Memorandum entitled, Ensuring Responsible Spending of Recovery Act Funds, dated March 20, 2009. I also affirm, as the cognizant Program Officer, that the proposal does not support projects described in Section 1604 of Division A of the Recovery Act. Continuous comb transducer strips will generate ultrasonic guided waves for structural health monitoring (SHM) of plate and shell structures. A theoretically driven approach, based on the application of wave mechanics principles, will be used to research and design a network of strip sensors. Fibrous piezoelectric composites will be considered for the comb elements, widely expanding the design space of these elements to include fiber orientation and volume fraction in addition to size, configuration, and location/size of the electrodes. Piezoelectric and mechanical material properties for these innovative sensor designs will be researched. The system will be capable of active interrogation with Lamb waves upon demand, as well as passive monitoring of acoustic emissions with low power. Project progress and results will be shared with the Center of Excellence in Structural Health Monitoring. The center bridges academia, government, and industry and aims to advance the state of the art in SHM and transfer technology. The investigators will outreach to middle school and high school students, especially targeting young women and underrepresented groups. The graduate students will have the opportunity to work with the Air Force Research Laboratory and a small business entity.

该提案将使用2009年《美国恢复和再投资法》（公法111-5）提供的资金颁发，并符合白宫备忘录第2节中建立的要求，确保了2009年3月20日的负责支出的恢复法案的支出。连续的梳子传感器条将产生超声波引导波，以用于板和壳结构的结构健康监测（SHM）。 理论上驱动的方法（基于波浪力学原理的应用）将用于研究和设计带状传感器网络。将考虑用于梳子元素的纤维压电复合材料，并广泛扩展这些元素的设计空间，包括纤维方向和体积分数，除了尺寸，配置以及电极的位置/尺寸。将研究这些创新传感器设计的压电和机械材料特性。该系统将能够根据需要用羔羊波进行主动询问，以及对低功率的声学发射的被动监测。项目进度和结果将与结构健康监测的卓越中心共享。中心桥梁学术界，政府和工业界，旨在推进SHM和转移技术的最新技术。调查人员将向中学和高中生宣讲，尤其是针对年轻妇女和代表性不足的团体。研究生将有机会与空军研究实验室和小型企业实体合作。