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Special Issue "Failure Analysis of Marine Structure II"

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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: 15 November 2023 | Viewed by 3989

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Special Issue Editors

Prof. Dr. Kazem Reza Kashyzadeh

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Guest Editor

1. Department of Transport, Academy of Engineering, Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
2. Director of Mechanical Characteristics Lab., Center for Laboratory Services, Sharif University of Technology, Tehran, Iran
Interests: stress analysis; structural fatigue; fatigue and fracture; residual stress; shot peening process; resistance spot weld; random loading; vibration; optimization; vehicle; road roughness; composite material; manufacturing process
Special Issues, Collections and Topics in MDPI journals

Dr. Mahmoud Chizari

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Guest Editor

1. School of Engineering and Technology, University of Hertfordshire, Hatfield, UK
2. School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
Interests: mechanical engineering; sustainable energy; structural integrity; design and manufacturing process; composite structures; experimental/computer simulations of solid/fluid materials; bioengineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Marine structures are engineering facilities which are carefully designed, constructed, and installed in seaside zones/oceans for the exploitation of different marine resources. In general, these structures have three categories: fixed, mobile, and floating offshore platforms. However, they can be divided into different groups based on their application, material, and supporting system. These structures are generally impractical when it comes to design, considering all types of loads. Moreover, predicting the response of the marine structures to wind direction, the strength of the wind, etc., is complex. Therefore, the specialist employs some random variables to design the marine structures for describing the loads, dimensions, and structural properties, etc. Other than that, marine structures are additionally subjected to berthing loads and operational loads. Hence, the correct analysis of these structures is very important. Failures of marine structures and their accessories can lead to serious consequences, including financial losses, delays in delivery time, and a threat to the safety of the people. Therefore, one of the significant design requirements for any marine structure is to have a reasonably long and safe operational life cycle without any catastrophic failure. In other words, the maintenance of marine systems is important during its efficiency period, and most research has been performed to optimize issues or to increase the efficiency of marine systems. Nevertheless, failures still happen, causing financial losses and threatening human lives, particularly in modern structures with weight reduction but expanded load-carrying capacity. The engineering practice recognizes several reasons for the failure of such structures: excessive force and/or temperature-induced elastic deformation, yielding, fatigue, corrosion, and creep, etc. As a result, it is essential to identify potential threats in the first step that can affect the integrity of marine structures.

This Special Issue on “Failure Analysis of Marine Structures” focuses on advancing knowledge specifically on marine structures which are made of steel, concrete, composite, or new materials. Topics include, but are not limited to:

Static and dynamic structural responses including collapse behavior;
Impact and collision mechanics;
Fatigue and fracture, creep detection;
Material selection, corrosion, and structural degradation;
Formulation and application of design methods and criteria including system reliability analysis, and optimization techniques;
Inspection, condition and structural health monitoring, repair/replacement and maintenance;
Methodology and practices for marine structure lifetime extension;
Resilient design of marine systems;
Application of machine learning methods and data-driven models for strength and/or load/response predictions of marine structures.

Dr. K. Reza Kashyzadeh
Dr. Mahmoud Chizari
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.

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Failure Analysis of Marine Structure in Journal of Marine Science and Engineering (15 articles)

Published Papers (6 papers)

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Research

Open AccessArticle

Influence of Conventional Shot Peening Treatment on the Service Life Improvement of Bridge Steel Piles Subjected to Sea Wave Impact

Kazem Reza Kashyzadeh

and

Mahmoud Chizari

J. Mar. Sci. Eng. 2023, 11(8), 1570; https://doi.org/10.3390/jmse11081570 - 09 Aug 2023

Viewed by 461

Abstract

The first goal of the current study is to estimate the fatigue life of the middle steel piles of an integrated bridge installed in water and subject to the impact of sea waves. In the following, the authors have tried to improve the service life of this critical part of the bridge, which is also the main purpose of the study. To this end, conventional shot peening, as one of the most well-known surface treatments, was used. Axial fatigue tests were performed on samples fabricated from IPE-220 steel piles in two states without and with shot peening surface treatment. Next, the modified S-N curve was entered into the finite element software to define the effect of shot peening treatment. Different analysis, including thermal, thermal-structural coupled, and transient dynamic, were performed and various outputs were extracted for the entire structure. In all these analyses, changes in air temperature have been neglected. The most important achievement of this research is the discovery that motionless water cannot cause serious damage to steel piles. Moreover, application of conventional shot peening can increase the fatigue life of steel piles, or in other words the service life of the bridge, subjected to the impact of sea waves by about 22%. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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Open AccessArticle

Theoretical and Numerical Study of Eddy Current Pulsed Thermography to Detect Damage of Deep-Sea Manned Pressure Hull

and

J. Mar. Sci. Eng. 2023, 11(7), 1410; https://doi.org/10.3390/jmse11071410 - 14 Jul 2023

Viewed by 532

Abstract

At present, research on pressure hull safety is mainly focused on the constitutive model of material properties and the evaluation model of structural parameters aiming at fatigue life prediction. The damage identification and quantitative evaluation methods of pressure hulls have not been studied. In this study, an eddy current thermal imaging method is introduced to detect micro-cracks in a deep-sea spherical pressure hull. In the detection method, temperature is used as a parameter to identify and quantify cracks. The temperature distribution around the cracks is studied using theoretical analysis and finite element simulation. A theoretical model is established using electromagnetic theory and heat transfer theory. Moreover, the temperature difference between the cracked area and the non-cracked area can be obtained by solving the heat conduction equation. A pulsed eddy current thermal imaging testing system is established, and a defective titanium alloy specimen is tested. At the same time, the temperature around the cracks in the specimens is simulated. The specimens have the same material and welding as a deep-sea spherical pressure hull. This paper discusses the possibility of its use in a pressure hull, which will provide a reference for micro-crack damage identification and quantitative evaluation of a deep-sea spherical pressure hull. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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Open AccessArticle

Analytical and Computational Modeling for Multi-Degree of Freedom Systems: Estimating the Likelihood of an FOWT Structural Failure

and

J. Mar. Sci. Eng. 2023, 11(6), 1237; https://doi.org/10.3390/jmse11061237 - 16 Jun 2023

Cited by 3 | Viewed by 582

Abstract

Wind turbines and their associated parts are subjected to cyclical loads, such as bending, torque, longitudinal stresses, and twisting moments. The novel spatiotemporal reliability technique described in this research is especially useful for high-dimensional structural systems that are either measured or numerically simulated during representative observational time span. As this study demonstrates, it is possible to predict risks of dynamic system failure or damage given the in situ environmental load pattern. As an engineering example for this reliability, the authors have chosen 10-MW floating wind turbines and their dynamic responses, under environmental loadings, caused by wind and waves. The aim of this study was to benchmark a state-of-the-art approach suitable for the reliable study of offshore wind turbines. Existing reliability methods do not easily cope with dynamic system high dimensionality. The advocated reliability technique enables accurate and efficient assessment of dynamic system failure probability, accounting for system nonlinearities and high dimensionality as well as cross-correlations between different system components. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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Open AccessArticle

Strength Assessment of Cement-Based Materials under Marine Conditions Subjected to Sulfate and Chloride Attack Based on Ion Distributions

and

J. Mar. Sci. Eng. 2023, 11(6), 1210; https://doi.org/10.3390/jmse11061210 - 11 Jun 2023

Viewed by 558

Abstract

Sulfate and chloride in the marine environment threaten the lifespan of concrete structures. Predicting the strength of concrete under different degrees of ion erosion is essential for marine structure design and maintenance. In this paper, a novel method was developed to predict the compressive strength evolution due to sulfate and chloride attack. The degradation and ion diffusion behavior of cement-based materials was investigated by analyzing the visual appearance, compressive strength, porosity, and ion distributions of mortar soaked in sulfate and chloride solutions with different concentrations. The damage degree was observed to increase with sulfate concentration and decrease with chloride concentration. Additionally, it was discovered that chloride and sulfate ions inhibited the diffusion of each other, and a higher concentration resulted in a more substantial inhibition effect. The total effective sulfate and chloride intrusions were proposed to describe the erosion degree of mortar based on the evaluation of the ion distributions with Fick’s second law. A compressive strength assessment method was established based on the analysis of the correlation between the strength contribution of sulfate reaction and the total effective chloride and sulfate intrusions. This method exhibits the potential for estimating the concrete strength of actual marine structures damaged by sulfate and chloride with accelerated laboratory tests. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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Open AccessArticle

Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15%Mg₂Si Hybrid Composite for Marine Applications

and

Seyed Saeid Rahimian Koloor

J. Mar. Sci. Eng. 2023, 11(5), 1050; https://doi.org/10.3390/jmse11051050 - 15 May 2023

Cited by 1 | Viewed by 628

Abstract

This study aims to investigate the microstructural alterations, mechanical properties, sliding wear behavior, and corrosion properties of Al-15%Mg₂Si composites with different contents of yttria-stabilized zirconia (YSZ). Al-15%Mg₂Si composites with the different contents of YSZ (0, 3, 6, and 9 wt.%) were fabricated using the stir-casting technique. The fabricated composites were characterized by means of optical microscopy (OM), scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS), Vickers hardness tester, linear reciprocating tribometer (LRT), and electrochemical test. The results showed that with the introduction of YSZ particles, the average size of the primary Mg₂Si particles in the base composite was 137.78 µm, which was reduced to 88.36 µm after adding 9 wt.% YSZ. The aspect ratio of Mg₂Si particles also decreased from 3, for the base composite, to 1.27 in the composite containing 9 wt.% YSZ. Moreover, the hardness value displays an incremental trend from 102.72 HV, as recorded for the base in situ composite, to 126.44 HV in the composite with 9 wt.% YSZ. On top of that, the Al-15%Mg₂Si-9%YSZ demonstrates exceptional wear resistance, with the lowest wear rate of 0.46 mm³/km under a 25 N applied load. Its average coefficient of friction (COF) was recorded at 0.42, which is lower than both the 3 and 6 wt.% of YSZ-containing composites. The smoother worn surface in Al-15%Mg₂Si-9%YSZ hybrid composite implies the abrasion phenomenon, as dominant wear behavior is milder than the other fabricated composites. On top of that, the Al-15%Mg₂Si-9%YSZ also possesses optimum corrosion resistance. The corrosion rate is 0.080 mmpy, comparable to the 0.164 mmpy rate obtained in the in situ composite. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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Open AccessArticle

Simulation and Experimental Research on the Failure of Marine Sliding Bearings

and

J. Mar. Sci. Eng. 2023, 11(1), 61; https://doi.org/10.3390/jmse11010061 - 01 Jan 2023

Viewed by 770

Abstract

The performance of the marine sliding bearing affects the reliability of marine engineering directly. Nevertheless, sliding bearings are subjected to frictional forces and problems, such as wear and fatigue, that occur after long-term use, which leads to failure. In this study, a sliding bearing friction calculation program is developed using the Fortran language, which calculates the friction force of the bearing under different working conditions. Simultaneously, a component-level sliding bearing tribology testing machine is designed, which predicts the wear failure and explores the wear mechanism for different types of sliding bearings. The model calculation results are in good agreement with the experimental data, which verifies the model’s correctness. Through the wear test, the wear mechanism of the sliding bearing is mainly scratches, and the electroplating layer in the groove is squeezed out of it and attached to the surface of the aluminum alloy to reduce friction. The model and the testing machine provide theoretical guidance for the friction durability of sliding bearings used in marine engineering and guarantee the reliability of marine engineering. Full article

(This article belongs to the Special Issue Failure Analysis of Marine Structure II)

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