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논문 기본 정보

자료유형
학술저널
저자정보
Guan, Shanyue (Engineering School of Sustainable Infrastructure and Environment, University of Florida) Rice, Jennifer A. (Engineering School of Sustainable Infrastructure and Environment, University of Florida) Li, Changzhi (Department of Electrical and Computer Engineering, Texas Tech University) Li, Yiran (Department of Electrical and Computer Engineering, Texas Tech University) Wang, Guochao (Department of Electrical and Computer Engineering, Texas Tech University)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제16권 제3호
발행연도
2015.1
수록면
521 - 535 (15page)

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Vibration-based monitoring is one approach used to perform structural condition assessment. By measuring structural response, such as displacement, dynamic characteristics of a structure may be estimated. Often, the primary dynamic responses in civil structures are below 5 Hz, making accurate low frequency measurement critical for successful dynamic characterization. In addition, static deflection measurements are useful for structural capacity and load rating assessments. This paper presents a DC coupled continuous wave radar to accurately detect both dynamic and static displacement. This low-cost radar sensor provides displacement measurements within a compact, wireless unit appropriate for a range of structural monitoring applications. The hardware components and operating mechanism of the radar are introduced and a series of laboratory experiments are presented to assess the performance characteristics of the radar. The laboratory and field experiments investigate the effect of factors such as target distance, motion amplitude, and motion frequency on the radar's measurement accuracy. The results demonstrate that the radar is capable of both static and dynamic displacement measurements with sub-millimeter accuracy, making it a promising technology for structural health monitoring.

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