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Polymers
Special Issues
Fibre-Reinforced Polymer Laminates: Structure and Properties
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Fibre-Reinforced Polymer Laminates: Structure and Properties

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

Deadline for manuscript submissions: 31 March 2025 | Viewed by 3092

Special Issue Editors

Prof. Dr. María del Carmen Serna Moreno

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Guest Editor
Instituto de Investigación Aplicada a la Industria Aeronáutica, Escuela de Ingeniería Industrial y Aeroespacial de Toledo, Universidad de Castilla-La Mancha, Campus Fábrica de Armas, Av. Carlos III, 45004 Toledo, Spain
Interests: strength of materials; continuum mechanics; biaxial testing; pseudo-ductility
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Juan Luis Martínez Vicente

E-Mail Website
Guest Editor
Instituto de Investigaciones Energéticas y Aplicaciones Industriales, Escuela Técnica Superior de Ingeniería Industrial de Ciudad Real, Edificio Politécnico, Universidad de Castilla-La Mancha, Av. Camilo José Cela s/n, 13071 Ciudad Real, Spain
Interests: strength of materials; FEM; biaxial testing; structural health monitoring

Special Issue Information

Dear Colleagues,

This Special Issue on the structure and properties of fibre-reinforced polymer-based laminates will contain original research and review papers on key topics, including:

  • Industrial applications: aerospace, ground based transportation, marine, renewable energies, civil engineering, sports and leisure, medical, agricultural applications.
  • Materials: fibre-reinforced polymers, prepregs.
  • Structural behaviour: uniaxial testing, bending, impact, multiaxial testing, non-standard experimental methods, anisotropy, fracture and damage, multiscale modelling, short and long fibre composites, buckling and stability, pseudo-ductile composites, application of numerical techniques.

This Special Issue focuses on experimental, numerical and analytical studies about fibre-reinforced polymer-based materials with structural applications. In addition to the topics already listed, the issue may also interlock the subjects of Strength of Materials and Continuum Mechanics for practical applications, including constitutive equations, optimization techniques, the Finite Element Method (FEM) or the application of novel experimental methodologies. Both original contributions and reviews are welcome. In short, all contributions that allow for the dissemination of the best knowledge of laminates manufactured by fibre-reinforced polymers will be covered in this Special Issue.

Prof. Dr. María del Carmen Serna Moreno
Prof. Dr. Juan Luis Martínez Vicente
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. 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

  • mechanical response
  • industrial applications
  • structural behaviour
  • polymers
  • composites
  • experimental testing
  • fracture
  • damage
  • buckling
  • FEM

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Published Papers (1 paper)

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Review

63 pages, 15790 KiB  
Review
Detecting Multi-Scale Defects in Material Extrusion Additive Manufacturing of Fiber-Reinforced Thermoplastic Composites: A Review of Challenges and Advanced Non-Destructive Testing Techniques
by Demeke Abay Ashebir, Andreas Hendlmeier, Michelle Dunn, Reza Arablouei, Stepan V. Lomov, Adriano Di Pietro and Mostafa Nikzad
Polymers 2024, 16(21), 2986; https://doi.org/10.3390/polym16212986 - 24 Oct 2024
Cited by 2 | Viewed by 2660
Abstract
Additive manufacturing (AM) defects present significant challenges in fiber-reinforced thermoplastic composites (FRTPCs), directly impacting both their structural and non-structural performance. In structures produced through material extrusion-based AM, specifically fused filament fabrication (FFF), the layer-by-layer deposition can introduce defects such as porosity (up to [...] Read more.
Additive manufacturing (AM) defects present significant challenges in fiber-reinforced thermoplastic composites (FRTPCs), directly impacting both their structural and non-structural performance. In structures produced through material extrusion-based AM, specifically fused filament fabrication (FFF), the layer-by-layer deposition can introduce defects such as porosity (up to 10–15% in some cases), delamination, voids, fiber misalignment, and incomplete fusion between layers. These defects compromise mechanical properties, leading to reduction of up to 30% in tensile strength and, in some cases, up to 20% in fatigue life, severely diminishing the composite’s overall performance and structural integrity. Conventional non-destructive testing (NDT) techniques often struggle to detect such multi-scale defects efficiently, especially when resolution, penetration depth, or material heterogeneity pose challenges. This review critically examines manufacturing defects in FRTPCs, classifying FFF-induced defects based on morphology, location, and size. Advanced NDT techniques, such as micro-computed tomography (micro-CT), which is capable of detecting voids smaller than 10 µm, and structural health monitoring (SHM) systems integrated with self-sensing fibers, are discussed. The role of machine-learning (ML) algorithms in enhancing the sensitivity and reliability of NDT methods is also highlighted, showing that ML integration can improve defect detection by up to 25–30% compared to traditional NDT techniques. Finally, the potential of self-reporting FRTPCs, equipped with continuous fibers for real-time defect detection and in situ SHM, is investigated. By integrating ML-enhanced NDT with self-reporting FRTPCs, the accuracy and efficiency of defect detection can be significantly improved, fostering broader adoption of AM in aerospace applications by enabling the production of more reliable, defect-minimized FRTPC components. Full article
(This article belongs to the Special Issue Fibre-Reinforced Polymer Laminates: Structure and Properties)
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