Marine Installations and Constructions

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (1 January 2023) | Viewed by 11521

Image courtesy of Dr. Pasqualino Corigliano and Prof. Dr. Vincenzo Piscopo

Special Issue Editors


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Guest Editor
Dipartimento di Ingegneria, Università degli Studi di Messina, Messina, Italy
Interests: fatigue; marine structures; welded joints; digital image correlation; infrared thermography; finite element analysis; explosion welding; composites; shipbuilding
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Guest Editor
Department of Science and Technology, University of Naples “Parthenope”, Centro Direzionale Isola C4, 80143 Naples, Italy
Interests: ultimate and residual strength analysis of marine structures; ultimate buckling strength of platings affected by uniform and random pitting corrosion wastage; mooring design and selection for floating offshore wind turbines; design of wave energy converters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Processes and technologies of Marine Installations and Constructions are extremely various and continue to evolve and transform. Furthermore, in order to deal with different challenges, such as higher strength in combination with lower weight and good corrosion resistance, new materials and connection techniques are often required.

The aim of the Special Issue "Marine Installations and Constructions" is to publish high-quality papers, which ought to offer original ideas and new methodologies, with clear indication of the innovations with respect to existing solutions. Topics addressed in this Special Issue may include, but are not limited to:

  • Static and fatigue design of offshore-welded structures;
  • Inspection, repair and maintenance;
  • Experimental techniques for fatigue analysis;
  • Large-scale tests on marine and offshore structural details;
  • Analysis of fatigue failure in welded and adhesive joints;
  • Corrosion tests on marine and offshore-welded joints;
  • Dynamic and fatigue design of mooring systems for offshore structures;
  • Design and analysis of support structures for floating offshore wind turbines;
  • Design and analysis of marine plants for wave energy extraction.

This is also a possibility to discuss the forthcoming perspectives of the field.

Dr. Pasqualino Corigliano
Prof. Dr. Vincenzo Piscopo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Marine structures
  • Offshore structures
  • Fatigue of connections
  • Finite element analysis
  • Experimental techniques
  • Mooring systems
  • Floating offshore wind turbines
  • Marine plants for wave energy converters

Published Papers (5 papers)

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Research

18 pages, 4981 KiB  
Article
Research on Multi-Fault Identification of Marine Vertical Centrifugal Pump Based on Multi-Domain Characteristic Parameters
by Zhiming Cheng, Houlin Liu, Runan Hua, Liang Dong, Qijiang Ma and Jiancheng Zhu
J. Mar. Sci. Eng. 2023, 11(3), 551; https://doi.org/10.3390/jmse11030551 - 4 Mar 2023
Cited by 5 | Viewed by 1520
Abstract
The marine vertical centrifugal pump is an important piece of auxiliary equipment for ships. Due to the complex operating conditions of marine equipment and the frequent swaying of the hull, typical pump failures such as rotor misalignment, rotor unbalance and mechanical loosening occur [...] Read more.
The marine vertical centrifugal pump is an important piece of auxiliary equipment for ships. Due to the complex operating conditions of marine equipment and the frequent swaying of the hull, typical pump failures such as rotor misalignment, rotor unbalance and mechanical loosening occur frequently, which seriously affect the service life of the marine vertical centrifugal pump. Based on multi-domain characteristic parameters, a fault identification method combining weighted kernel principal component analysis (WKPCA) and particle swarm optimization support vector machine (PSO-SVM) is proposed in this paper. It can effectively solve the problem of multi-fault classification of the centrifugal pump and provide reference for efficient maintenance of equipment. Firstly, a vertical centrifugal pump test bench is set up to simulate typical faults. The collected original fault data are denoised by Kalman filtering. Then, a multi-domain feature set composed of 20 feature parameters was constructed. However, due to high dimension, data redundancy and calculation time were increased. After dimensionality reduction, a fault feature set with 9 feature indexes was established by combining with the WKPCA method. Finally, the PSO-SVM model is used to realize multi-fault identification, and the recognition results of the traditional support vector machine and the genetic algorithm support vector machine (GA-SVM) are compared to verify the diagnosis results and classification performance of PSO-SVM. The results show that the accuracy of WKPCA and PSO-SVM fault recognition methods based on multi-domain characteristic parameters is 1, and it has good convergence. Full article
(This article belongs to the Special Issue Marine Installations and Constructions)
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15 pages, 8953 KiB  
Article
Effects of Floating Airbag on Cable Hydrodynamic Behaviors: An Experimental Study
by Shanjun Bao, Zhigang Zhang, Zhoulong Yuan, Jiancheng Wang, Qianhao Yu and Zhen Liu
J. Mar. Sci. Eng. 2022, 10(3), 402; https://doi.org/10.3390/jmse10030402 - 10 Mar 2022
Viewed by 1899
Abstract
The development of an offshore island presented a need to construct an electricity grid with the laying of submarine cable. The floating airbag is a useful tool for cable construction, especially during landing. The effects of these airbags on cable hydrodynamic behaviors were [...] Read more.
The development of an offshore island presented a need to construct an electricity grid with the laying of submarine cable. The floating airbag is a useful tool for cable construction, especially during landing. The effects of these airbags on cable hydrodynamic behaviors were investigated in this study. Regular wave conditions with various airbag intervals and cable masses were employed in wave flume tests. The vertical displacements and tensions of the cable under different test conditions were investigated. It was found that the peak values of the displacement amplitudes and tensions were obtained during the cable landing phase. Full article
(This article belongs to the Special Issue Marine Installations and Constructions)
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17 pages, 4504 KiB  
Article
On the Compression Instability during Static and Low-Cycle Fatigue Loadings of AA 5083 Welded Joints: Full-Field and Numerical Analyses
by Pasqualino Corigliano
J. Mar. Sci. Eng. 2022, 10(2), 212; https://doi.org/10.3390/jmse10020212 - 5 Feb 2022
Cited by 6 | Viewed by 1652
Abstract
The aim of this scientific work was to evaluate the compression instability effects during static and low-cycle fatigue loadings of AA 5083 welded joints, commonly used in marine structures. Low-cycle fatigue assessment in marine structures is of utmost importance since high levels of [...] Read more.
The aim of this scientific work was to evaluate the compression instability effects during static and low-cycle fatigue loadings of AA 5083 welded joints, commonly used in marine structures. Low-cycle fatigue assessment in marine structures is of utmost importance since high levels of plastic deformation can arise in the proximity of high-stress concentration areas. Displacement ratios equal to minus one and zero were used to perform experimental low-cycle fatigue tests. The tests were monitored by means of the Digital Image Correlation technique in order to detect the strain patterns, with particular attention paid to stress concentration areas, indicating that a specimen tends to buckle during high compression loads, for tests with a displacement ratio of minus one. The tests at displacement ratios equal to −1 showed a lowering of the strain–life curve revealing a considerable effect on compression instability. A nonlinear finite element modelling procedure, depending only on hardness measurements, was developed. The hardness measurements were used in order to assess the distinct mechanical properties of the different zones that were included in the finite element model. The finite element model results were compared to the data achieved by means of the digital image correlation technique, demonstrating that hardness measurements can help predict the low-cycle fatigue behaviour of welded joints and consider compression instability phenomena. Full article
(This article belongs to the Special Issue Marine Installations and Constructions)
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23 pages, 6405 KiB  
Article
Fatigue Assessment of Moorings for Floating Offshore Wind Turbines by Advanced Spectral Analysis Methods
by Vincenzo Piscopo, Antonio Scamardella, Giovanni Battista Rossi, Francesco Crenna and Marta Berardengo
J. Mar. Sci. Eng. 2022, 10(1), 37; https://doi.org/10.3390/jmse10010037 - 31 Dec 2021
Cited by 6 | Viewed by 2892
Abstract
The fatigue assessment of mooring lines for floating offshore wind turbines represents a challenging issue not only for the reliable design of the stationkeeping system but also for the economic impact on the installation and maintenance costs over the entire lifetime of the [...] Read more.
The fatigue assessment of mooring lines for floating offshore wind turbines represents a challenging issue not only for the reliable design of the stationkeeping system but also for the economic impact on the installation and maintenance costs over the entire lifetime of the offshore wind farm. After a brief review about the state-of-art, the nonlinear time-domain hydrodynamic model of floating offshore wind turbines moored by chain cables is discussed. Subsequently, the assessment of the fatigue damage in the mooring lines is outlined, focusing on the combined-spectrum approach. The relevant fatigue parameters, due to the low- and wave-frequency components of the stress process, are estimated by two different methods. The former is based on the time-domain analysis of the filtered stress process time history. The latter, instead, is based on the spectral analysis of the stress process by two advanced methods, namely the Welch and Thomson ones. Subsequently, a benchmark study is performed, assuming as reference floating offshore wind turbine the OC4-DeepCWind semisubmersible platform, equipped with the 5 MW NREL wind turbine. The cumulative fatigue damage is determined for eight load conditions, including both power production and parked wind turbine situations. A comparative analysis between time-domain and spectral analysis methods is also performed. Current results clearly show that the endorsement of advanced spectral analysis methods can be helpful to improve the reliability of the fatigue life assessment of mooring lines. Full article
(This article belongs to the Special Issue Marine Installations and Constructions)
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13 pages, 59003 KiB  
Article
Lateral and Overturning Resistance of Wind Turbine Foundations Reinforced with Piles on Bedrock by Modelling Experiments
by Gichun Kang, Seong-Kyu Yun, Tae-Hyung Kim and Jiseong Kim
J. Mar. Sci. Eng. 2021, 9(9), 919; https://doi.org/10.3390/jmse9090919 - 24 Aug 2021
Cited by 1 | Viewed by 2292
Abstract
This study evaluated the lateral and overturning resistance of wind turbine foundations reinforced with piles on bedrock through model experiments. In particular, changes in lateral and overturning resistance of wind turbine foundations were analyzed according to cross-sectional size and the presence of piles [...] Read more.
This study evaluated the lateral and overturning resistance of wind turbine foundations reinforced with piles on bedrock through model experiments. In particular, changes in lateral and overturning resistance of wind turbine foundations were analyzed according to cross-sectional size and the presence of piles of wind turbine foundations. As a result, by reducing the cross-section, the lateral resistance of the pile-reinforced wind turbine foundation was compared to the existing wind turbine foundation with large cross-sections and was shown to be 1.68 times greater. In the case of vertical displacements affecting overturning, the safety of overturning was also greater, as the vertical displacement of the pile-reinforced wind turbine foundation was 36% smaller than the existing wind turbine foundation. As a result of the unidirectional cyclic load on a pile-reinforced wind turbine foundation, lateral resistance value was similar to that of the static load in target displacement value, and it showed that the elastic resilience was very large due to pile reinforcement. According to the bending moment measurement of piles embedded in wind turbine foundations and bedrock, bending moments were large in the order of the front row, the right-hand row, and the back row, while the maximum bending moment generation was found on the boundary surface of the wind turbine foundation and the rubble mound layer for the front row, as well as on the boundary surface of the rubble mound layer and bedrock for the right-hand row and back row. Full article
(This article belongs to the Special Issue Marine Installations and Constructions)
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