Smart Structures and Systems

  • 제15권2호
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  • Pages.245-258
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  • 2015
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Experimental investigations on detecting lateral buckling for subsea pipelines with distributed fiber optic sensors

  • Feng, Xin (State Key Laboratory of Coastal and Offshore Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Wu, Wenjing (State Key Laboratory of Coastal and Offshore Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Li, Xingyu (State Key Laboratory of Coastal and Offshore Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Zhang, Xiaowei (State Key Laboratory of Coastal and Offshore Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology) ;
  • Zhou, Jing (State Key Laboratory of Coastal and Offshore Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology)
  • 투고 : 2014.03.31
  • 심사 : 2015.01.16
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

A methodology based on distributed fiber optic sensors is proposed to detect the lateral buckling for subsea pipelines in this study. Uncontrolled buckling may lead to serious consequences for the structural integrity of a pipeline. A simple solution to this problem is to control the formation of lateral buckles among the pipeline. This firms the importance of monitoring the occurrence and evolution of pipeline buckling during the installation stage and long-term service cycle. This study reports the experimental investigations on a method for distributed detection of lateral buckling in subsea pipelines with Brillouin fiber optic sensor. The sensing scheme possesses the capability for monitoring the pipeline over the entire structure. The longitudinal strains are monitored by mounting the Brillouin optical time domain analysis (BOTDA) distributed sensors on the outer surface of the pipeline. Then the bending-induced strain is extracted to detect the occurrence and evolution of lateral buckling. Feasibility of the method was validated by using an experimental program on a small scale model pipe. The results demonstrate that the proposed approach is able to detect, in a distributed manner, the onset and progress of lateral buckling in pipelines. The methodology developed in this study provides a promising tool for assessing the structural integrity of subsea pipelines.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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  3. Detrimental Effect Elimination of Laser Frequency Instability in Brillouin Optical Time Domain Reflectometer by Using Self-Heterodyne Detection vol.17, pp.3, 2017, https://doi.org/10.3390/s17030634
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  5. Fatigue characteristics of distributed sensing cables under low cycle elongation vol.18, pp.6, 2016, https://doi.org/10.12989/sss.2016.18.6.1203
  6. Performance improvement of a self-heterodyne detection BOTDR system employing broad-band laser vol.14, pp.5, 2018, https://doi.org/10.1007/s11801-018-8052-7
  7. Experimental Study on the Buckling of Subsea Pipe-in-Pipe vol.48, pp.1, 2019, https://doi.org/10.1520/JTE20180595
  8. MWCNT/epoxy strip-like sensors for buckling detection in beam-like structures vol.133, pp.None, 2015, https://doi.org/10.1016/j.tws.2018.09.013
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  14. Method for tunnel cross-section deformation monitoring based on distributed fiber optic sensing and neural network vol.67, pp.None, 2015, https://doi.org/10.1016/j.yofte.2021.102704
  15. Lateral buckling of submarine pipelines under high temperature and high pressure—A literature review vol.244, pp.None, 2022, https://doi.org/10.1016/j.oceaneng.2021.110254
  16. Improvement of Performance for Raman Assisted BOTDR by Analyzing Brillouin Gain Spectrum vol.22, pp.1, 2015, https://doi.org/10.3390/s22010116