Strain and acceleration measurement of a steel frame structure by FBG sensors
Fiber Bragg grating (FBG) sensors present a great deal of potential in monitoring the structural due to their advantages such as immunity to electromagnetic interference, light weight, small size, multiplexing capabilities, ease of installation and durability. In this paper, the sensing principle is explained at first, and the strain transferring character is conducted in the calibration experiment on the steel plate using universal testing machine, then the research work focus on the dynamic strain measurement and natural frequencies of a steel frame with three stories using a FBG sensing system through experimental and numerical calculation. Two FBG strain sensors were designed and mounted on the steel frame. In a series of impact loading experiments, the data measured by FBG sensors were collected throughout a commercial FBG wavelength interrogation system. The comparison of experimental and numerical results revealed that the FBG sensors have ability of measurement of the dynamic strain of the steel frame structure in real time.
Fiber Bragg grating Sensor Dynamic strain measurement Health monitoring
Xueheng Ji Hongnan Li Liang Ren
State Key Laboratory of Coastal and Offshore Engineering,Department of Civil and Hydraulic Engineering,Dalian University of Technology 116024,China
国际会议
第六届国际振动工程会议(The 6th International Conference on Vibration Engineering)(ICVE’ 2008)
大连
英文
2008-06-04（万方平台首次上网日期，不代表论文的发表时间）