Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Experimental Study on Application of an Optical Sensor to Measure Mooring-Line Tension in Waves

  • Nguyen, Thi Thanh Diep (Department of Smart Ocean Environmental Energy, Changwon National University) ;
  • Park, Ji Won (Department of Advanced Defense Engineering, Changwon National University) ;
  • Nguyen, Van Minh (Department of Transportation Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Yoon, Hyeon Kyu (Department of Naval Architecture and Marine Engineering, Changwon National University) ;
  • Jung, Joseph Chul (Department of R&D manager, IT convergence Laboratory, CyTroniQ Co. Ltd.) ;
  • Lee, Michael Myung Sub (Department of Businesses Development, CyTroniQ Co. Ltd.)
  • Received : 2022.02.11
  • Accepted : 2022.05.22
  • Published : 2022.06.30
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Abstract

Moored floating platforms have great potential in ocean engineering applications because a mooring system is necessary to keep the platform in station, which is directly related to the operational efficiency and safety of the platform. This paper briefly introduces the technical and operational details of an optical sensor for measuring the tension of mooring lines of a moored platform in waves. In order to check the performance of optical sensors, an experiment with a moored floating platform in waves is carried out in the wave tank at Changwon National University. The experiment is performed in regular waves and irregular waves with a semi-submersible and triangle platform. The performance of the optical sensor is confirmed by comparing the results of the tension of the mooring lines by the optical sensor and tension gauges. The maximum tension of the mooring lines is estimated to investigate the mooring dynamics due to the effect of the wave direction and wavelength in the regular waves. The significant value of the tension of mooring lines in various wave directions is estimated in the case of irregular waves. The results show that the optical sensor is effective in measuring the tension of the mooring lines.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant, which is funded by the Korean government (MSIT) (No. 2019R1F1A1057551).

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