Research on a vortex-induced vibration monitoring sensor technology based on triboelectric nanogenerator

Wenchi Ni, Junchuan Jiang, Haijun Huang, Gengqing Tian and Yong Ma

Energy, 2025, vol. 325, issue C

Abstract: Vortex induced vibration is the main cause of fatigue damage in underwater structures, and monitoring of underwater structures is to ensure their safety. There is a lack of an underwater power supply system, and the cylindrical structure often experiences irregular vibrations, limiting traditional vibration monitoring. This article proposes a particle type vibration monitoring sensor for vibration monitoring. The experiment discussed the self-powering and motion capture of RF-TENG under different particle diameters, filling ratios, and vibration modes, obtaining the following conclusions: (1) Particle diameter and filling ratio affect the vibration monitoring capability, and the influencing mechanism is related to the agglomeration effect. A container with a diameter of 111 mm has better overall performance when selecting a particle diameter of 15 mm (2) Both voltage and current have the ability to monitor cylinder displacement vibration, but voltage is better. Filtering can eliminate low-frequency noise, but high-frequency noise is relatively difficult. (3) When the filling rate is between 50 % and 70 %, the sensor can capture more than 90 mW/m2 of energy in the upper branch, while possessing motion capture and self powered performance. The results verified the feasibility of RF-TENG as a self powered vibration monitoring sensor, providing a new approach for underwater structural monitoring.

Keywords: VIV; RF-TENG; Filling rate; Correlation (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:325:y:2025:i:c:s0360544225017633

DOI: 10.1016/j.energy.2025.136121

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