Abstract
Within the Space@Sea project, funded by the Horizon 2020 program, a concept for a floating island was developed. The main idea is to create space in the offshore environment, which can be used to harvest renewable energy, grow food or build a maritime transport and logistic hub. The island is designed as an assembly of platforms, which are connected by ropes and fenders. These connection elements are considered critical, as they have to carry extreme loads in the severe offshore environment. At the same time, any failure in the connecting elements might put the entire platform structure at risk. This paper presents a feasibility study for the fault detection in the connection elements using Extended Kalman filters. For various test cases, typical parameters of the connecting elements are estimated from motion data of the structure. Thus, the technique reveals changes in the connections. For various test cases, it is shown that fault detection is possible. Not only a failure of a single connecting rope but also multiple faults in the system can be detected.
Highlights
The Space@Sea project was launched in November 2017, as part of the EU innovation and research program Horizon 2020
The platforms are excited by wind generated ocean waves, which are modeled by the Pierson- Moskowitz power spectrum
The model is used to generate data from the acceleration sensors, which are used in the estimation process
Summary
The Space@Sea project was launched in November 2017, as part of the EU innovation and research program Horizon 2020. The aim of this project was to develop a durable and sustainable solution for the creation of space in marine environments using flexible floating islands. For this purpose, a modular system consisting of floating multi-function platforms was developed. The easy implementation of a combination of several of these use cases was a key goal of the project and a major focus was put on the modularity of the platform system. The corner platforms are marked with “C,” the edge platforms with “E” and the platforms inside of the platform arrangement with “I.”
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