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柔性超声传感结构健康监测技术现状与展望
The Status and Prospects of Flexible Transducers in Ultrasonic Waves-Based Structural Health Monitoring
  
DOI:10.16450/j.cnki.issn.1004-6801.2020.03.001
中文关键词:  柔性传感器  传感网络  超声波  健康监测
英文关键词:flexible transducer  sensing network  ultrasonic waves  structural health monitoring
基金项目:(国家自然科学基金联合基金资助项目(U1813222);广东省前沿与关键科技创新基金资助项目(2017B090910013);深圳市科技计划基础研究资助项目(ZDSYS20190902093209795,JCYJ20180507182239617,JCYJ20170818153048647)
作者单位
郭师峰1,2,3,李叶海1,2,3,李振1,2,3,冯伟1,2,3 (1. 中国科学院深圳先进技术研究院深圳518055)(2. 深圳市智慧传感与系统检测重点实验室深圳518055)(3. 中国科学院人机智能协同系统重点实验室深圳518055) 
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中文摘要:
      现有硬质传感器因黏接耦合到待测结构所带来的检测结果可靠性差、附加质量重及体积大等局限,难以在实际工程结构中全面应用。针对此问题,新型柔性传感技术利用聚合物等柔性材料,结合新型制备工艺,可将整个传感网络直接制备于待测结构,灵活布置于复杂形廓位置,具有检测灵敏度高、重量轻、柔性好和可设计等优点。针对主流的基于超声技术的结构健康监测方法,柔性传感单元可形成大面积、高密度的完备传感网络,并且具备信号调制能力,能够完成多种形式的主被动监测任务,为结构健康监测技术在航空航天、轨道交通和石油管道等工程结构的应用提供关键的技术保障。
英文摘要:
      Structural health monitoring (SHM) technology is of great significance in ensuring structural safety, reducing maintenance costs, and extending the service life of structures. Conventional transducers, which are made of brittle material and installed with additional couplant and fixtures, are difficult to be applied in real engineering structures because of their poor reliability, heavy weight, and excessive volume. Flexible transducer technology is the important direction to solve the existing structural health monitoring problems. The flexible transducers and sensing network, made of polymer materials, can be directly fabricated and integrated on the structures of interests by using advanced additive manufacturing technology, with the advantages in high sensitivity and consistency, light weight and low volume, and good flexibility with complex profiles. For applications in ultrasonic waves-based structural health monitoring,the flexible transducers can form large and condense transducer network on structures, possess wave tuning capability, and qualify for multiple forms of monitoring tasks (including active and passive damage detection), therefore providing solid foundation for health monitoring technology in real engineering structures such as aerospace, railway transportation and oil pipelines.
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