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Mechanical Behaviour of Advanced Metal and Composite Materials
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Mechanical Behaviour of Advanced Metal and Composite Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 8459

Special Issue Editors

Dr. Raffaele Ciardiello

E-Mail Website
Guest Editor
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, Italy
Interests: mechanical properties of composite materials and structures; multifunctional composite materials; structural health monitoring; structural design optimisation; adhesive joining methodology; reversible adhesive; adhesive joints for composite materials
Special Issues, Collections and Topics in MDPI journals
Dr. Carlo Boursier Niutta

E-Mail Website
Guest Editor
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy
Interests: high-cycle and very high-cycle fatigue; structural integrity of composite and additively manufactured materials; size effect and fatigue failure; numerical modelling of damage and failure
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With this Special Issue, titled “Mechanical Behaviour of Advanced Composite Materials”, we aim to collate original research and review papers on key topics related to advanced composite materials, including:

  • Materials: short and long fibre-reinforced polymers, prepregs, hybrid materials, including metal/composite and hybrid/fibre composites, 3D printing materials, and bio-inspired structures.
  • Industrial fields: aerospace, ground-based transportation, marine, renewable energies, civil engineering, sports and leisure, medical, and agricultural applications.
  • Topics: structural optimisation, material design, multifunctional materials, structural health monitoring, mechanical properties of structures, advanced testing, numerical modelling, and material modelling at different scales.
  • Structural behaviour investigation: standard and non-standard experimental methodologies (tensile, compressive, bending, shear, impact, fatigue, crash testing, hardness, etc.), uniaxial and multiaxial testing, study on anisotropy, fracture and damage (damage characterisation and modelling), joining of composite materials, multifunctional materials, applications of numerical techniques for advanced modelling, multiscale modelling, structural optimisation methods for lightweight design of structures.

This Special Issue aims to provide an overview of the latest innovations related to advanced composite materials. The Issue focuses on experimental, numerical, and analytical studies on different aspects of fibre-reinforced polymer-based materials and their applications, with a specific focus on the mechanical properties.

Dr. Raffaele Ciardiello
Dr. Carlo Boursier Niutta
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. Materials 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 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.

Keywords

  • advanced composite materials
  • mechanical response
  • material modelling
  • polymers
  • joining composites
  • finite element modelling
  • multiscale modelling
  • damage
  • fracture

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (5 papers)

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Research

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16 pages, 32102 KiB  
Article
Graphene/Metal Composites Decorated with Ni Nanoclusters: Mechanical Properties
by Vyacheslav Kolesnikov, Roman Mironov and Julia Baimova
Materials 2024, 17(23), 5753; https://doi.org/10.3390/ma17235753 - 24 Nov 2024
Viewed by 718
Abstract
With the developments in nanotechnology, the elaborate regulation of microstructure shows attractive potential in the design of new composite materials. Herein, composite materials composed of graphene network filled with metal nanoparticles are analyzed to optimize the fabrication process and mechanical properties. In the [...] Read more.
With the developments in nanotechnology, the elaborate regulation of microstructure shows attractive potential in the design of new composite materials. Herein, composite materials composed of graphene network filled with metal nanoparticles are analyzed to optimize the fabrication process and mechanical properties. In the present work, molecular dynamic simulations are used to analyze the possibility of obtaining a composite structure with Ni-decorated graphene. The weak bonding at the graphene–copper and graphene–aluminum interfaces is manipulated by functionalizing graphene with nickel nanoclusters. It is found that Ni decoration considerably increases interfacial bonding and, at the same time, prevents the formation of a strong graphene network. It is found that Ni decoration for the Al/graphene composite increases the its ductility by 0.6, while increasing it for the Cu/graphene composite by about 0.5. Ultimate tensile strength of the composite with Al and Cu is close and equal to 22 GPa, respectively. The strength of the composite with Ni-decorated graphene is much lower and equal to 13 GPa for Cu/graphene/Ni and 17 GPa for Al/graphene/Ni. While Young’s modulus for the Cu/graphene composite is 18 GPA, for Al/graphene, Al/graphene/Ni, and Cu/graphene/Ni, it is 12 GPa. The obtained results demonstrate the future prospects of the graphene modification for better composite enhancement. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Advanced Metal and Composite Materials)
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15 pages, 5009 KiB  
Article
Strength of Composite Pressure Insulators for High Voltage Circuit Breakers: An Experimental and Numerical Investigation
by Jan Ferino, Gabriela Loi, Andrea Meleddu, Francesco Aymerich, Iuri Mazzarelli and Elisa Pichini
Materials 2024, 17(11), 2741; https://doi.org/10.3390/ma17112741 - 4 Jun 2024
Viewed by 1001
Abstract
Glass fiber-reinforced composite cylinders, capable of withstanding internal pressure generated during service, are increasingly utilized as insulators in high voltage circuit breakers. Different testing procedures have been suggested by various standards to assess the pressure resistance of these components. Due to its simplicity [...] Read more.
Glass fiber-reinforced composite cylinders, capable of withstanding internal pressure generated during service, are increasingly utilized as insulators in high voltage circuit breakers. Different testing procedures have been suggested by various standards to assess the pressure resistance of these components. Due to its simplicity and cost-effectiveness, the split-disk testing method is the most widely used for evaluating the hoop strength of pressure cylinders during the development and verification phases. However, the method presents several aspects, such as those related to the influence of specimen geometry and friction, which require further examination since they may impact the outcome of the experimental tests. The investigation, carried out by a combination of experimental testing and finite element analyses, shows that the friction between the specimen and the semi-disks has a noteworthy effect on the hoop load applied to the specimen. Almost constant load distributions along the hoop direction, representative of the real operating conditions in a pressurized cylinder, can be achieved via proper lubrication of the contact surfaces. Furthermore, FE analyses demonstrate that the notch geometry suggested by specific standards (short notch) is not capable of inducing a uniform strain distribution in the notched region. A different notch geometry (long notch) is proposed in the study to attain a more uniform strain field over the reduced area region. The experimental results indicate that the strength measured on the short notch specimens is higher than that determined on the long notch specimens, thus confirming the significant influence of strain distribution on the strength properties measured with the split-disk method. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Advanced Metal and Composite Materials)
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17 pages, 15178 KiB  
Article
Mechanical and Thermal Characterization of Bamboo and Interlaminar Hybrid Bamboo/Synthetic Fibre-Reinforced Epoxy Composites
by Matilde Oliveira, Vitor Neves and Mariana D. Banea
Materials 2024, 17(8), 1777; https://doi.org/10.3390/ma17081777 - 12 Apr 2024
Cited by 6 | Viewed by 1539
Abstract
The main objective of this study was to investigate the mechanical and thermal properties of bamboo, as well as interlaminar hybrid composites reinforced with both bamboo and synthetic fibres in an epoxy matrix. Bamboo and glass, aramid, and carbon bidirectional fabrics were used [...] Read more.
The main objective of this study was to investigate the mechanical and thermal properties of bamboo, as well as interlaminar hybrid composites reinforced with both bamboo and synthetic fibres in an epoxy matrix. Bamboo and glass, aramid, and carbon bidirectional fabrics were used with a bi-component epoxy matrix to fabricate the composite materials using the vacuum bagging process. The synthetic fabrics were placed on the outer layers, while the bamboo fabrics were used as the core of the hybrid composites. The developed composites were characterized and compared in terms of morphological, physical, and mechanical properties. Further, thermogravimetric (TGA) analysis was used to measure and compare the degradation temperature of the composites studied. Finally, a Scanning Electron Microscopy (SEM) analysis was performed in order to examine the fracture surfaces of the specimens tested. It was found that the fibre hybridization technique significantly improved the general mechanical properties. TGA analysis showed an increase in the thermal stability of the composites obtained by incorporating the synthetic fibres, confirming the effect of hybridization and efficient fibre matrix interfacial adhesion. The results from this work showed that the use of synthetic fibre reinforcements can help to significantly improve the mechanical and thermal properties of bamboo fibre-reinforced composites. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Advanced Metal and Composite Materials)
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19 pages, 8055 KiB  
Article
Wear Analysis of NiTi Sand Screens Using Altair Discrete Element Method
by Azubuike Hope Amadi, Mysara Mohyaldinn, Abdullah Abduljabbar, Syahrir Ridha, Prasad Avilala and Gabriel Tayo Owolabi
Materials 2024, 17(2), 281; https://doi.org/10.3390/ma17020281 - 5 Jan 2024
Cited by 6 | Viewed by 2193
Abstract
This research explores discrete element method analysis to investigate the wear of NiTi Sand Screens in comparison to traditional materials. The study utilized Altair EDEM v2022.2 software and employed Oka and Archard models to simulate the wear behavior of Nitinol, a well-established Shape [...] Read more.
This research explores discrete element method analysis to investigate the wear of NiTi Sand Screens in comparison to traditional materials. The study utilized Altair EDEM v2022.2 software and employed Oka and Archard models to simulate the wear behavior of Nitinol, a well-established Shape Memory Alloy (SMA). The mechanical properties considered include Poisson’s ratio, solid density, shear modulus, and Young modulus. Results indicate significantly higher wear values and deformations with the Oka model compared to negligible wear with the Archard model. The Oka model’s emphasis on impact as the primary wear mechanism, supported by high normal cumulative energy, better represents sand screen wear phenomena. Additionally, this study indicates that factors such as particle size distribution and normal and tangential cumulative contact energy hold potential as predictors of wear response and characteristics. The Oka model demonstrated that NiTi exhibited reduced wear losses compared to SUS630 and Cr–Mn white cast iron, both of which are recognized for their high toughness when subjected to an impact load. Experimental analysis validated the simulation findings with morphological and graphical erosion plots. The limitation of observing the shape memory effect through DEM (discrete element method) simulation was acknowledged. Recommendations include characterizing post-wear microstructural changes, exploring the influence of temperature on wear behavior, and further research to refine wear models and understand SMA sand screen responses. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Advanced Metal and Composite Materials)
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Review

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34 pages, 2323 KiB  
Review
Natural Fibre and Hybrid Composite Thin-Walled Structures for Automotive Crashworthiness: A Review
by Monica Capretti, Giulia Del Bianco, Valentina Giammaria and Simonetta Boria
Materials 2024, 17(10), 2246; https://doi.org/10.3390/ma17102246 - 10 May 2024
Cited by 10 | Viewed by 2157
Abstract
Natural fibres, valued for their low density, cost-effectiveness, high strength-to-weight ratio, and efficient energy absorption, are increasingly emerging as alternatives to synthetic materials in green composites. Although they cannot fully replace synthetic counterparts, like carbon, in structural applications due to their inferior mechanical [...] Read more.
Natural fibres, valued for their low density, cost-effectiveness, high strength-to-weight ratio, and efficient energy absorption, are increasingly emerging as alternatives to synthetic materials in green composites. Although they cannot fully replace synthetic counterparts, like carbon, in structural applications due to their inferior mechanical performance, combining them through hybridization presents a potential solution. This approach promotes a balance between environmental benefits and mechanical efficiency. Recently, the transportation sector has shifted its focus towards delivering lightweight and crashworthy composite structures to improve vehicle performance, address safety concerns, and minimise environmental impact through the use of eco-friendly materials. The crashworthiness of energy absorbers, typically thin-walled structures, is influenced by several factors, including their material and geometric design. This paper presents a comprehensive overview of recent studies focused on the crashworthiness of fibre-reinforced, thin-walled composites under axial crushing. It explores different aspects, such as their materials, cross-sections, stacking sequences, triggering or filling mechanisms, and the effect of loading rate speed. Emphasis is placed on natural-fibre-based materials, including a comparative analysis of synthetic ones and their hybridization. The primary objective is to review the progress of solutions using green composites as energy absorbers in the automotive industry, considering their lightweight design, crashworthiness, and environmental sustainability. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Advanced Metal and Composite Materials)
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