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Safety and Reliability of Ship and Ocean Engineering Structures
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Safety and Reliability of Ship and Ocean Engineering Structures

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 (15 October 2024) | Viewed by 6874

Special Issue Editors

Prof. Dr. Xiangshao Kong

E-Mail Website
Guest Editor
Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Center, Wuhan University of Technology, Wuhan, China
Interests: explosion/impact response; anti-explosion protection; safety and reliability assessment; composite material; experimental technology
Prof. Dr. Weiguo Wu

E-Mail Website
Guest Editor
Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Center, Wuhan University of Technology, Wuhan, China
Interests: safety and reliability assessment of ship and ocean engineering structures; vibration control of ship structures; structural dynamics

Special Issue Information

Dear Colleagues,

As our global reliance on maritime transportation continues to grow, the imperative to develop robust and resilient structures becomes increasingly vital. The studies featured in this Special Issue span a spectrum of disciplines, from naval architecture and marine engineering to materials science and structural analysis. By bringing together diverse perspectives and cutting-edge research, the Special Issue serves as a platform for professionals and researchers to exchange insights, share the best practices and foster collaboration in the pursuit of safer and more reliable maritime structures. The topics of this Special Issue include, but are not limited to:

  • Resistance improvement of maritime structures to risks and reliability;
  • Material selection on the safety of structures in extreme marine environments;
  • Seismic performance assessment of ships and ocean engineering structures;
  • Corrosion and fatigue influence of marine structures over long-term use;
  • Application of new materials, such as composite materials, in marine engineering structures;
  • Integration of smart sensors and monitoring systems for the real-time monitoring of marine structures;
  • Modern autonomous navigation technology;
  • Digital technology and data analysis system to assist maintenance plans for marine structures.

Prof. Dr. Xiangshao Kong
Prof. Dr. Weiguo Wu
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

  • ship safety
  • ocean engineering structure safety
  • risks and reliability
  • material selection
  • monitoring system
  • maintenance
  • standards

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (7 papers)

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Research

13 pages, 6406 KiB  
Article
An Experimental Study on Vortex-Induced Vibration Suppression of a Long Flexible Catenary Cable by Using Vibration Dampers
by Li Ruan, Hongzhong Zhu and Changhong Hu
J. Mar. Sci. Eng. 2024, 12(11), 1995; https://doi.org/10.3390/jmse12111995 - 6 Nov 2024
Viewed by 423
Abstract
In this paper, an experimental study is conducted to investigate the effectiveness of vibration dampers in suppressing vortex-induced vibration in a long, flexible catenary cable with a low mass ratio. The dampers, consisting of two small, symmetric, lightweight pipes clamped to the cable, [...] Read more.
In this paper, an experimental study is conducted to investigate the effectiveness of vibration dampers in suppressing vortex-induced vibration in a long, flexible catenary cable with a low mass ratio. The dampers, consisting of two small, symmetric, lightweight pipes clamped to the cable, are sparsely deployed along the cable to shape the vibration characteristics. The experimental results demonstrate that dampers significantly reduce the vibration amplitude by up to 60% and axial tension by up to 61% at high flow velocities, effectively suppressing the cable vibration in perpendicular flow. In addition, it is observed that the in-line and cross-flow vibration frequencies are approximately equal when the dampers are applied. This behavior contrasts with the conventional undamped catenary cable, where the in-line vibration frequencies are double those of the cross-flow frequencies. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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21 pages, 2782 KiB  
Article
The Method of the Natural Frequency of the Offshore Wind Turbine System Considering Pile–Soil Interaction
by Wei Li, Xiaojuan Li, Xufeng Zhao, Qian Yin, Mingxing Zhu and Le Yang
J. Mar. Sci. Eng. 2024, 12(11), 1912; https://doi.org/10.3390/jmse12111912 - 25 Oct 2024
Viewed by 522
Abstract
Accurately and efficiently evaluating the influence of pile–soil interaction on the overall natural frequency of wind turbines is one of the difficulties in current offshore wind power design. To improve the structural safety and reliability of the offshore wind turbine (OWT) systems, a [...] Read more.
Accurately and efficiently evaluating the influence of pile–soil interaction on the overall natural frequency of wind turbines is one of the difficulties in current offshore wind power design. To improve the structural safety and reliability of the offshore wind turbine (OWT) systems, a new closed-form solution method of the overall natural frequency of OWTs considering pile–soil interactions with highly effective calculations is established. In this method, Hamilton’s principle and the equivalent coupled spring model (ECS model) were firstly combined. In Hamilton’s theory, the Timoshenko beam assumption and continuum element theory considering the three-dimensional displacement field of soil were used to simulate the large-diameter monopile–soil interaction under lateral load in multilayer soil. Case studies were used to validate the proposed method’s correctness and efficiency. The results show that when compared with the data of 13 offshore wind projects reported in existing research papers, the difference between the overall natural frequency calculated by the proposed method and that reported in this study is within ±10%. This calculation method achieves the goal of convenient, fast and accurate prediction of the overall natural frequency of offshore wind systems. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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13 pages, 6375 KiB  
Article
Experimental Research on the Low-Cycle Fatigue Crack Growth Rate for a Stiffened Plate of EH36 Steel for Use in Ship Structures
by Qin Dong, Geng Xu and Wei Chen
J. Mar. Sci. Eng. 2024, 12(8), 1365; https://doi.org/10.3390/jmse12081365 - 11 Aug 2024
Viewed by 846
Abstract
This paper presents a straightforward approach for determining the low-cycle fatigue (LCF) crack propagation rate in stiffened plate structures containing cracks. The method relies on both the crack tip opening displacement (CTOD) and the accumulative plastic strain, offering valuable insights for ship structure [...] Read more.
This paper presents a straightforward approach for determining the low-cycle fatigue (LCF) crack propagation rate in stiffened plate structures containing cracks. The method relies on both the crack tip opening displacement (CTOD) and the accumulative plastic strain, offering valuable insights for ship structure design and assessing LCF strength. Meanwhile, the LCF crack growth tests for the EH36 steel were conducted on stiffened plates with single-side cracks and central cracks under different loading conditions. The effects of stress amplitude, stress ratio, and stiffener position on the crack growth behavior were examined. Fitting and verifying analyses of the test data were employed to investigate the relationship between CTOD and the crack growth rate of EH36 steel under LCF conditions. The results showed that the proposed CTOD-based prediction method can accurately characterize the LCF crack growth behavior for stiffened plate of EH36 steel for use in ship structures. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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13 pages, 7247 KiB  
Article
Research on Collapse Testing of Nuclear Icebreaker Reactor Hull Structure Based on Distortion Similarity Theory
by Yi Lin, Ruiqi Cheng, Lizhi Chen, Xiangshao Kong and Zhiyong Pei
J. Mar. Sci. Eng. 2024, 12(7), 1184; https://doi.org/10.3390/jmse12071184 - 15 Jul 2024
Viewed by 784
Abstract
In this study, the finite element method combined with the model test method are used to investigate the ultimate strength of a target ship reactor hull structure under a pure bending load. Based on the distortion similarity theory and nonlinear similarity method, a [...] Read more.
In this study, the finite element method combined with the model test method are used to investigate the ultimate strength of a target ship reactor hull structure under a pure bending load. Based on the distortion similarity theory and nonlinear similarity method, a scale model of the actual ship reactor hull structure is designed and the model collapse test is conducted. The ultimate bending moment obtained by the model test is transformed to the actual ship through the similarity transformation relationship and compared with the nonlinear finite element analysis result of the actual structure. The results are consistent with each other, which indicates that the collapse characteristics of the actual ship reactor hull structure can be better forecasted using the model test results when the test model is designed based on the nonlinear similarity method and distortion similarity theory. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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19 pages, 11930 KiB  
Article
A Study on Crack Initiation and Propagation of Welded Joints under Explosive Load
by Penglong Ding, Xuhui Gong, Lei Sun, Jiajia Niu, Youjing Zhang and Lianyong Xu
J. Mar. Sci. Eng. 2024, 12(6), 927; https://doi.org/10.3390/jmse12060927 - 31 May 2024
Viewed by 632
Abstract
Welded joints in naval ship hull structures are weak areas under explosive load, but there are relatively few studies investigating the failure characteristics of welded joints through dynamic fracture and explosion tests. In order to explore and predict the failure characteristics of welded [...] Read more.
Welded joints in naval ship hull structures are weak areas under explosive load, but there are relatively few studies investigating the failure characteristics of welded joints through dynamic fracture and explosion tests. In order to explore and predict the failure characteristics of welded joints under explosive load, instrumented Charpy impact tests, explosion tests, and numerical simulations were carried out. The dynamic fracture toughness of ultra-high strength ship hull structural steel welded joints was obtained, and the dynamic stress intensity factors, together with the correlation between stress wave and crack propagation at different positions, were acquired. The results showed that the stress state at the crack tip of a Charpy impact specimen was consistent with that of a welded joint under explosive loads, and the crack initiated when the dynamic stress intensity factor exceeded the dynamic fracture toughness. The results indicated that the dynamic fracture toughness obtained by instrumented Charpy impact tests could be used to predict the crack initiation characteristics of welded structures under explosive load, and the stress wave at the crack tip was basically perpendicular to the crack propagation surface and promoted the rapid propagation of cracks. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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19 pages, 1642 KiB  
Article
A Lightweight Secure Scheme for Underwater Wireless Acoustic Network
by Jia Shi, Jinqiu Wu, Zhiwei Zhao, Xiaofei Qi, Wenbo Zhang, Gang Qiao and Dahong Zuo
J. Mar. Sci. Eng. 2024, 12(5), 831; https://doi.org/10.3390/jmse12050831 - 16 May 2024
Viewed by 1101
Abstract
Due to the open underwater channels and untransparent network deployment environments, underwater acoustic networks (UANs) are more vulnerable to hostile environments. Security research is also being conducted in cryptography, including authentication based on asymmetric algorithms and key distribution based on symmetric algorithms. In [...] Read more.
Due to the open underwater channels and untransparent network deployment environments, underwater acoustic networks (UANs) are more vulnerable to hostile environments. Security research is also being conducted in cryptography, including authentication based on asymmetric algorithms and key distribution based on symmetric algorithms. In recent years, the advancement of quantum computing has made anti-quantum attacks an important issue in the field of security. Algorithms such as lattice and SPHINCS+ have become a research topic of interest in the field of security. However, within the past five years, few papers have discussed security algorithms for UANs to resist quantum attacks, especially through classical algorithms. Some existing classical asymmetric and symmetric algorithms are considered to have no prospects. From the perspective of easy deployment in engineering and anti-quantum attacks, our research focuses on a comprehensive lightweight security framework for data protection, authentication, and malicious node detection through the Elliptic Curve and Hash algorithms. Our mechanism is suitable for ad hoc scenarios with limited underwater resources. Meanwhile, we have designed a multi-party bit commitment to build a security framework for the system. A management scheme is designed by combining self-certifying with the threshold sharing algorithm. All schemes are designed based on certificate-less and ad hoc features. The proposed scheme ensures that the confidentiality, integrity, and authentication of the system are well considered. Moreover, the scheme is proven to be of unconditional security and immune to channel eavesdropping. The resource and delay issues are also taken into consideration. The simulations considered multiple variables like number of nodes, attackers, and message length to calculate proper values that can increase the efficiency of this scheme. The results in terms of delay, delivery ratio, and consumption demonstrate the suitability of the proposal in terms of security, especially for malicious node detection. Meanwhile, the computational cost has also been controlled at the millisecond level. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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17 pages, 7752 KiB  
Article
Experimental Study on Low-Cycle Fatigue Characteristics of Marine Structural Steel
by Dong Qin, Lu Xiayang and Xu Geng
J. Mar. Sci. Eng. 2024, 12(4), 651; https://doi.org/10.3390/jmse12040651 - 14 Apr 2024
Cited by 1 | Viewed by 1270
Abstract
This research focuses on the experimental investigation of the low-cycle fatigue characteristics of marine structural steel. The study aimed to explore the behavior of marine-grade steel under low-cycle fatigue conditions. The experimental parameters include the fatigue life of the material, crack propagation behavior, [...] Read more.
This research focuses on the experimental investigation of the low-cycle fatigue characteristics of marine structural steel. The study aimed to explore the behavior of marine-grade steel under low-cycle fatigue conditions. The experimental parameters include the fatigue life of the material, crack propagation behavior, and a comprehensive analysis of mechanical properties associated with various loading conditions. Based on the experimental results, a low-cycle fatigue crack propagation rate model for marine structural steel plates was established using CTOD as a characterization parameter. The primary objective of this research is likely to enhance the durability and safety of maritime structures, providing valuable technical insights for the field of naval engineering. Full article
(This article belongs to the Special Issue Safety and Reliability of Ship and Ocean Engineering Structures)
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