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Mechanical Properties of Thin Coatings, Composites and Nano Materials

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

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 1874

Special Issue Editors


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Guest Editor
1. Centre for Mechanical Engineering, Materials and Processes, University of Coimbra Department of Mechanical Engineering Polo II, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
2. Escola Superior de Tecnologia de Abrantes, Instituto Politécnico de Tomar, Rua 17 de Agosto de, 1808-2200 Abrantes, Portugal
Interests: mechanical properties of bulk materials and thin films: modelling and numerical simulation, inverse analysis and experimental aspects; mechanical properties of nanomaterials: modelling and experimental aspects
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
CEMMPRE, Centre for Mechanical Engineering, Materials and Processes, Department of Mechanical Engineering Polo II, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
Interests: mechanical properties of bulk materials and thin films: modelling and numerical simulation, inverse analysis and experimental aspects; experimental mechanical characterization of materials: mechanical tests and structural studies by different techniques; mechanical properties of nanomaterials: modelling and experimental aspects; metal forming: fundamental aspects, modelling, constitutive laws, inverse analysis, numerical simulation and applications.
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increasing use of thin coatings and composite materials in the numerous fields of industry and technology gave rise the necessity to develop methodologies for evaluating the mechanical properties, in order to predict their performance during technological processes. The depth-sensing indentation (DSI) test is widely used technique for determine the mechanical properties of thin coatings and composites materials. The DSI technique allows the evaluation, not only of the hardness, but also other mechanical properties, such as the Young’s modulus, the residual stresses, the yield stress and the strain–hardening parameter. This Special Issue will focus on the methods and procedures that can be used in experimental and numerical DSI tests and contribute to the evaluating of the mechanical properties of thin films and composite materials, paying special attention to the nanocomposites, i.e., those reinforced by nanoparticles, nanotubes, or nanofibers.

Furthermore, the aim of this Special Issue is to gather recent achievements towards experimental characterization and modelling of the mechanical behaviour of nanocomposites, including but not limiting ones reinforced by carbon nanotubes.

The contributions to the modelling and numerical simulation of the mechanical behaviour of carbon and non-carbon nanotubes and nanofibers, which are helpful for the design methodologies to produce nanocomposites, are also welcome.

Prof. Dr. Jorge M. Antunes
Dr. Nataliya A. Sakharova
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

  • thin coatings
  • composite materials
  • depth-sensing indentation (DSI) test
  • nanoindentation
  • nanocomposites
  • nanotubes
  • modelling
  • numerical simulation
  • mechanical tests
  • mechanical properties

Published Papers (1 paper)

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Research

14 pages, 3884 KiB  
Article
Paper-Based Laminates Impregnated with a Hybrid Lignin-Phenol-Formaldehyde Resin
by Miroslav Němec, Kateřina Hájková and Štěpán Hýsek
Materials 2023, 16(7), 2669; https://doi.org/10.3390/ma16072669 - 27 Mar 2023
Cited by 1 | Viewed by 1491
Abstract
In this study, high-pressure laminates (HPL) impregnated with phenol-formaldehyde (PF) resins enriched with kraft lignin were developed. Pulverised kraft lignin was added to the commercial PF resin in the amounts of 1% and 5% (solid to solid). Laminates were manufactured using pressure impregnation [...] Read more.
In this study, high-pressure laminates (HPL) impregnated with phenol-formaldehyde (PF) resins enriched with kraft lignin were developed. Pulverised kraft lignin was added to the commercial PF resin in the amounts of 1% and 5% (solid to solid). Laminates were manufactured using pressure impregnation of the resins into the papers and using hot pressing of HPL in a laboratory press. Laminates with a lignin content of 1% (L-LPF-1) showed the highest bending strength (72.42 MPa) and Brinell hardness (9.41); they also exhibited the best moisture uptake (9.61) and thickness swelling after immersion in water (3.32%). Except for impact bending, laminates with a lignin content of 5% (L-LPF-5) had worse properties. However, the differences between the variants are mostly not statistically significant and are comparable with the results of commercial PF resin. Scanning electron microscopy confirmed the homogenous structure of produced laminates and the occurrence of cohesive failures in ruptured L-LPF-1 laminates, whereas in ruptured L-LPF-5 laminates adhesive failures were also observed. Based on the conducted research it can be said that the utilisation of kraft lignin as an additive to PF resin (in the amount of 1%) has a positive effect on the produced HPL. Full article
(This article belongs to the Special Issue Mechanical Properties of Thin Coatings, Composites and Nano Materials)
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