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Sustainability of Engineering Structures in Marine Environment

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Environmental Sustainability and Applications".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 6467

Special Issue Editor


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Guest Editor
Faculty of Maritime Studies, University of Rijeka, Rijeka, Croatia
Interests: failure analysis; fracture mechanics; structural integrity; material characterization

Special Issue Information

Dear Colleagues,

marine and marine-like (e.g. influence of water, sea, slush, moist, salt, sun, temperature, etc.) environment presents serious threat to engineering structures. Engineers tend to design structures resistant to harsh environmental impact, however, degradation and failures of such structures are inevitable. Cost of replacing them is high, so it is of special interest to investigate the possibility of optimizing engineering structures in a way that they are sustainable, i.e. have extended service life, are easily reparable and efficiently recycled.

This Special Issue seeks to answer these challenges through publishing papers that are concerned with design, manufacture, maintenance and repair of engineering structures exposed to harsh environment.

These points of concern can be applied to, but not limited:

  • development and optimization of adequate materials (traditional and modern),
  • joining of materials and structures (mechanical, welding, adhesive),
  • assessing structural integrity (wear, damage, fatigue, fracture, failure),
  • improving energy conversion and efficiency.

This Special Issue will bring together scientist dealing with various aspects of improving sustainability of engineering structures exposed to marine, or similar, environment. Analytical, experimental and numerical approaches to research are welcome, particularly blend of these.

Dr. Goran Vukelic
Guest Editor

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. Sustainability is an international peer-reviewed open access semimonthly 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 2400 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

  • engineering structures
  • environmental impact
  • mechanics
  • materials
  • energy

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Published Papers (2 papers)

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Research

20 pages, 26379 KiB  
Article
Effect of Time-Real Marine Environment Exposure on the Mechanical Behavior of FRP Composites
by Goran Vizentin, Darko Glujić and Vedrana Špada
Sustainability 2021, 13(17), 9934; https://doi.org/10.3390/su13179934 - 4 Sep 2021
Cited by 10 | Viewed by 2441
Abstract
Fiber reinforced polymer (FRP) composites coupons were exposed to real sea environment to assess the influence on the mechanical behavior of composite materials used in the construction of marine structures. Real-life sea environment conditions were opted for instead of the more common simulated [...] Read more.
Fiber reinforced polymer (FRP) composites coupons were exposed to real sea environment to assess the influence on the mechanical behavior of composite materials used in the construction of marine structures. Real-life sea environment conditions were opted for instead of the more common simulated and laboratory versions of seawater in the attempt to obtain more realistic structural modeling environmental input design parameters for marine structures. Exposure was performed over prolonged time span instead of the usual accelerated tests. Epoxy and polyester resins, reinforced with glass fibers in three fiber layout configurations, were used to manufacture standardized tensile testing coupons. Mass changes due to seawater absorption, microorganism growth, changes in tensile strength (standard tensile tests), and surface morphology of the coupons were evaluated after 6- and 12-month long periods of submersion in the sea in the Rijeka bay, Croatia. All specimens showed mass increase due to water absorption and growth of attached algae and sea microorganisms. Various levels of reduction in tensile strength, depending on the fiber layout configurations, were observed. Significant changes in the matrix material structure were noticed, effectively producing “voids”. Based on these results, sustainability of FRP composites in marine environment is addressed and discussed. Full article
(This article belongs to the Special Issue Sustainability of Engineering Structures in Marine Environment)
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16 pages, 3232 KiB  
Article
S235JRC+C Steel Response Analysis Subjected to Uniaxial Stress Tests in the Area of High Temperatures and Material Fatigue
by Josip Brnic, Marino Brcic, Sebastian Balos, Goran Vukelic, Sanjin Krscanski, Mladomir Milutinovic and Miroslav Dramicanin
Sustainability 2021, 13(10), 5675; https://doi.org/10.3390/su13105675 - 19 May 2021
Cited by 3 | Viewed by 3060
Abstract
Knowledge of the properties and behavior of materials under certain working conditions is the basis for the selection of the proper material for the design of a new structure. This paper deals with experimental investigations of the mechanical properties of unalloyed high quality [...] Read more.
Knowledge of the properties and behavior of materials under certain working conditions is the basis for the selection of the proper material for the design of a new structure. This paper deals with experimental investigations of the mechanical properties of unalloyed high quality steel S235JRC + C (1.0122) and its behavior under conditions of high temperatures, creep and mechanical fatigue. The response of the material at high temperatures (20–700 °C) is shown in the form of engineering stress-strain diagrams while that at creep behavior (400–600 °C) is shown in the form of creep curves. Furthermore, based on uniaxial fully reversed mechanical fatigue tests (R=1), a stress-life (S-N) fatigue diagram has been constructed and the fatigue (endurance) limit of the material is calculated The experimentally determined value of tensile strength at room temperature is 534 MPa. The calculated value of the fatigue limit, also at room temperature, using the modified staircase method and based on the mechanical fatigue tests data, is 202 MPa. With regard to creep resistance, steel 1.0122 can be considered creep-resistant only at a temperature of 400 °C and at an applied stress not exceeding 50% of the yield strength corresponding to this temperature. Full article
(This article belongs to the Special Issue Sustainability of Engineering Structures in Marine Environment)
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