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Mechanical and Failure Behavior of Polymeric Composites

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 2339

Special Issue Editor


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Guest Editor
Theoretical and Applied Mechanics Laboratory (LMTA), Mechanical Engineering Postgraduate Program (PGMEC), Universidade Federal Fluminense (UFF), Niteroi, RJ, Brazil
Interests: inelastic behaviour of solids–elasto-plasticity, elasto-viscoplasticity, viscoelasticity (metallic alloys, polymers and composites); damage mechanics, fatigue mechanics and fracture mechanics; thermodynamics of inelastic materials

Special Issue Information

Dear Colleagues,

This Special Issue is focused on the mechanical behavior and integrity analysis of polymeric composites. It is expected that the papers to be submitted should focus on fundamental and applied issues, including computational, theoretical, and experimental contributions. The objective is to bring together works by specialists for an in-depth discussion on the various aspects covered by this great branch of science and technology. As suggestions, the following topics can be cited: nonlinear behavior of composite structures subjected to severe loads under adverse environmental conditions; fracture damage and fatigue damage; creep damage; lifetime prediction; composite systems used to repair or reinforce damaged metal or concrete structures; composite technology for hydrogen pipelines and hydrogen storage.

Prof. Dr. Heraldo Silva Da Costa Mattos
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. Polymers 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 2700 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

  • polymeric composites
  • mechanical behavior
  • integrity analysis
  • lifetime prediction
  • fracture
  • fatigue damage
  • creep damage
  • repair systems

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Published Papers (2 papers)

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Research

22 pages, 595 KiB  
Article
Numerical Investigation of Fracture Behaviour of Polyurethane Adhesives under the Influence of Moisture
by Siva Pavan Josyula and Stefan Diebels
Polymers 2024, 16(18), 2676; https://doi.org/10.3390/polym16182676 - 23 Sep 2024
Viewed by 397
Abstract
The mechanical behaviour of polymer adhesives is influenced by the environmental conditions leading to ageing and affecting the integrity of the material. The polymer adhesives have hygroscopic behaviour and tend to absorb moisture from the environment, causing the material to swell without applying [...] Read more.
The mechanical behaviour of polymer adhesives is influenced by the environmental conditions leading to ageing and affecting the integrity of the material. The polymer adhesives have hygroscopic behaviour and tend to absorb moisture from the environment, causing the material to swell without applying external load. The focus of the work is to investigate the viscoelastic material behaviour under ageing conditions. The constitutive equations and the governing equations to numerically investigate the fracture in swollen viscoelastic material are discussed to describe the numerical implementation. Phase-field damage modelling has been used in numerical studies of ductile and brittle materials for a long time. The finite-strain phase-field damage model is used to investigate the fracture behaviour in aged viscoelastic polymer adhesives. The finite-strain viscoelastic model is formulated based on the continuum rheological model by combining spring and Maxwell elements in parallel. Commercially available post-cured crosslinked polyurethane adhesives are used in the current investigation. Post-cured samples of crosslinked polyurethane adhesives are prepared for different humidity conditions under isothermal conditions. These aged samples are used to perform tensile and tear tests and the test data are used to identify the material parameters from the curve fitting process. The experiment and simulation are compared to relate the findings and are the first step forward to improve the method to model crosslinked polymers. Full article
(This article belongs to the Special Issue Mechanical and Failure Behavior of Polymeric Composites)
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16 pages, 10907 KiB  
Article
Thermo-Mechanical Characterization of Metal–Polymer Friction Stir Composite Joints—A Full Factorial Design of Experiments
by Arménio N. Correia, Beatriz M. Gaspar, Gonçalo Cipriano, Daniel F. O. Braga, Ricardo Baptista and Virgínia Infante
Polymers 2024, 16(5), 602; https://doi.org/10.3390/polym16050602 - 22 Feb 2024
Cited by 4 | Viewed by 1077
Abstract
With the increasing demand for lighter, more environmentally friendly, and affordable solutions in the mobility sector, designers and engineers are actively promoting the use of innovative integral dissimilar structures. In this field, friction stir-based technologies offer unique advantages compared with conventional joining technologies, [...] Read more.
With the increasing demand for lighter, more environmentally friendly, and affordable solutions in the mobility sector, designers and engineers are actively promoting the use of innovative integral dissimilar structures. In this field, friction stir-based technologies offer unique advantages compared with conventional joining technologies, such as mechanical fastening and adhesive bonding, which recently demonstrated promising results. In this study, an aluminum alloy and a glass fiber-reinforced polymer were friction stir joined in an overlap configuration. To assess the main effects, interactions, and influence of processing parameters on the mechanical strength and processing temperature of the fabricated joints, a full factorial design study with three factors and two levels was carried out. The design of experiments resulted in statistical models with excellent fit to the experimental data, enabling a thorough understanding of the influence of rotational speed, travel speed, and tool tilt angle on dissimilar metal-to-polymer friction stir composite joints. The mechanical strength of the composite joints ranged from 1708.1 ± 45.5 N to 3414.2 ± 317.1, while the processing temperature was between 203.6 ± 10.7 °C and 251.5 ± 9.7. Full article
(This article belongs to the Special Issue Mechanical and Failure Behavior of Polymeric Composites)
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