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Advances in Fatigue and Fracture of Fiber-Reinforced Polymers

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

Deadline for manuscript submissions: 31 August 2025 | Viewed by 441

Special Issue Editors


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Guest Editor
Department of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
Interests: multiaxial fatigue; fatigue life prediction; damage modeling; experimental mechanics

E-Mail Website
Guest Editor
Mechanical Engineering Department, Wroclaw University of Science and Technology, Wrocław, Poland
Interests: XFEM; crack

Special Issue Information

Dear Colleagues,

This Special Issue aims to disseminate high-quality original research in relation to the fatigue and fracture of fiber-reinforced polymers. These advanced materials have numerous applications, including structural elements, and are present in almost every aspect of our daily lives. However, due to their inherent anisotropy, the design process often requires extensive experimental campaigns, making it both time- and cost-intensive. Therefore, significant efforts must be dedicated to analyzing failure mechanisms under mechanical loading and beyond.

Understanding the failure processes in fiber-reinforced polymers is crucial for accurate fatigue estimation. This Special Issue seeks to promote and contribute to the development of novel failure concepts in mechanics and physics, bridging the gap between elastic and continuum deformation theories and the failure of polymers and polymer composites, also including hybrid composites based on natural materials or a combination of various materials. It focuses on fatigue, fracture, and damage mechanics while integrating advancements in theoretical, computational, and experimental mechanics, as well as machine learning techniques.

We welcome both original research articles and comprehensive review papers in this Special Issue. Potential topics include, but are not limited to, the following:

  • Experimental fracture mechanics;
  • Numerical analysis of fatigue and fracture processes;
  • Utilization of machine learning approaches in the fracture of composites;
  • Multiaxial fatigue—experiments and modeling;
  • Multiaxial fatigue design considerations, including notches;
  • Fatigue life estimation;
  • Numerical analysis of fatigue and fracture processes;
  • Damage-based mechanics in composite materials;
  • Damage accumulation in composite materials;
  • Non-destructive methods for assessing composite materials;
  • Multidirectional laminates under variable amplitude loading;
  • Damage development in fiber-reinforced polymers;
  • Fatigue and fracture of hybrid composites based on polymers including natural composites, fiber metal laminates, and others.

Dr. Szymon Duda
Dr. Michal Jan Smolnicki
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

  • mechanics of composite materials
  • fatigue life estimation
  • damage-based modeling
  • experimental mechanics
  • failure analysis
  • solid mechanics
  • multiaxial fatigue

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Published Papers (1 paper)

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Research

25 pages, 7210 KiB  
Article
Determination of Interface Fracture Parameters in Thermoplastic Fiber Metal Laminates Under Mixed-Mode I+II
by Michał Smolnicki and Szymon Duda
Polymers 2025, 17(11), 1462; https://doi.org/10.3390/polym17111462 - 24 May 2025
Viewed by 308
Abstract
Thermoplastic fiber metal laminates (FMLs) are hybrid material systems that consist of a thin aluminum alloy sheet bonded to plies of fiber-reinforced adhesive. They provide excellent properties like fatigue strength, damage-tolerant properties, and inherent resistance to corrosion. However, they are still challenging materials [...] Read more.
Thermoplastic fiber metal laminates (FMLs) are hybrid material systems that consist of a thin aluminum alloy sheet bonded to plies of fiber-reinforced adhesive. They provide excellent properties like fatigue strength, damage-tolerant properties, and inherent resistance to corrosion. However, they are still challenging materials in terms of the metal–composite interface, which is the weakest link in this material system. In this paper, an experimental–numerical method for the determination of the fracture stress and energy for metal–composite interlayer is presented and verified. The proposed method utilizes four different experimental tests: DCB test (interface opening—mode I), ENF test (interface shearing—mode II), MMB test (mixed-mode I+II—opening with the shearing of the interface) and three-point bending test (3PB). For each test, digital twin in the form of a numerical model is prepared. The established numerical models for DCB and ENF allowed us to determine fracture stress and energy for mode I and mode II, respectively. On the basis of the numerical and experimental (from the MMB test) data, the B-K exponent is determined. Finally, the developed material model is verified in a three-point bending test, which results in mixed-mode conditions. The research is conducted on the thermoplastic FML made of aluminum alloy sheet and glass fiber reinforced polyamide 6. The research presented is complemented by fundamental mechanical tests, image processing and Scanning Electron Microscopy (SEM) analysis. As an effect, for the tested material, fracture parameters are determined using the described method. Full article
(This article belongs to the Special Issue Advances in Fatigue and Fracture of Fiber-Reinforced Polymers)
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