期刊
FRONTIERS IN MATERIALS
卷 8, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2021.683374
关键词
CFRP composite pipe; dynamic performance; vibration response; quasi-distributed optical fiber sensing technique; dynamic strain measurement
资金
- National Natural Science Foundation of China [51908263, 11932008]
- Fundamental Research Funds for the Central Universities [lzujbky-2020-56]
- Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology) of Ministry of Education [HITCE201901]
- [2020-0624-RCC-0013]
- [JK 2021-18]
Carbon fiber-reinforced polymer (CFRP) composite pipes, known for their high strength and corrosion resistance, are used to transfer gases and oils in subsea environments. Developing quasi-distributed optical fiber sensing techniques based on multiple configurations of fiber Bragg grating (FBG) elements allows for precise structural monitoring of the pipes. Experimental results confirm the effectiveness and accuracy of the proposed sensing technique in vibration analysis and monitoring the health of CFRP composite pipes in operation.
For the high strength, corrosion resistance, and good stability, carbon fiber-reinforced polymer (CFRP) composites have been made into pipes to transfer gasses and oils in subsea environment. Structural performance of CFRP composite pipes is particularly important to sustain the regular operation of the delivery system. To obtain the in-field behavior of the CFRP composite pipes, quasi-distributed optical fiber sensing techniques are developed based on the multiple configuration of fiber Bragg grating (FBG) sensing elements. Theoretical investigation on the dynamic response of the pipes is performed. Experiments on cantilever CFRP pipes with surface-attached FBGs in series and packaged FBG sensors have been conducted to check the feasibility and effectiveness of the proposed sensing technique. Results validate the good measurement performance of the proposed sensors and the accuracy of the vibration analysis. The study can be adopted to instruct the establishment of the structural health monitoring system of CFRP composite pipes and assess the safety operation state of the pipe systems.
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