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Thermal and Mechanical Properties of Porous Materials and Composites
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Thermal and Mechanical Properties of Porous Materials and Composites

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

Deadline for manuscript submissions: closed (20 March 2024) | Viewed by 3325

Special Issue Editor

Prof. Dr. Dominique Baillis

E-Mail Website
Guest Editor
LaMCoS, INSA-Lyon, UMR CNRS 5259, 18-20, rue des Sciences, CEDEX, 69621 Villeurbanne, France
Interests: heterogeneous media; porous media; cellular materials; foam; modeling; thermal properties; mechanical properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Porous and composite media have seen strong development these last few years. Among them, fibrous media, honeycomb, and open or closed cell foams materials present not only thermal and lightness but also mechanical properties, which make them very interesting for numerous applications.

Advances have been achieved in recent years in parallel in various scientific communities, such as materials, heat transfer, and mechanics. Research has been focusing on the characterization of thermal and mechanical effective properties of these materials, via analytical, numerical, and experimental methods. Because of the complex architecture of these materials, it is difficult to predict their properties using analytical calculations without important simplifications to the architecture. Analytical methods often require a simplified architecture (e.g., cubic shape cells for foams, infinitely long cylinders for fibrous media), while numerical approaches model physical mechanisms in a representative elementary volume using a discretized architecture (obtained from X-ray tomography, Voronoi tessellation method, etc.). Recent advances in analytical, computational, and experimental methods allow us to better understand and optimize the properties of these materials.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Dominique Baillis
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. 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

  • computational modeling
  • porous materials
  • cellular structure
  • thermal properties
  • mechanical properties
  • transport properties

Published Papers (3 papers)

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Research

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14 pages, 3111 KiB  
Article
Thermal Conductivity and Microstructure of Novel Flaxseed-Gum-Filled Epoxy Resin Biocomposite: Analytical Models and X-ray Computed Tomography
by Mohammed Zaidi, Dominique Baillis, Naim Naouar, Michael Depriester and François Delattre
Materials 2023, 16(18), 6318; https://doi.org/10.3390/ma16186318 - 20 Sep 2023
Viewed by 721
Abstract
The growing awareness of the environment and sustainable development has prompted the search for solutions involving the development of bio-based composite materials for insulating applications, offering an alternative to traditional synthetic materials such as glass- and carbon-reinforced composites. In this study, we investigate [...] Read more.
The growing awareness of the environment and sustainable development has prompted the search for solutions involving the development of bio-based composite materials for insulating applications, offering an alternative to traditional synthetic materials such as glass- and carbon-reinforced composites. In this study, we investigate the thermal and microstructural properties of new biocomposite insulating materials derived from flaxseed-gum-filled epoxy, with and without the inclusion of reinforced flax fibers. A theoretical approach is proposed to estimate the thermal conductivity, while the composite’s microstructure is characterized using X-ray Computed Tomography and image analysis. The local thermal conductivity of the flax fibers and the flaxseed gum matrix is identified by using effective thermal conductivity measurements and analytical models. This study provides valuable insight into the thermal behavior of these biocomposites with varying compositions of flaxseed gum and epoxy resin. The results obtained could not only contribute to a better understanding the thermal properties of these materials but are also of significant interest for advanced numerical modeling applications. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Porous Materials and Composites)
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12 pages, 4958 KiB  
Article
Identification of the Radiative Parameters-Albedo and Optical Thickness—Of the Juncus maritimus Fiber
by Marcelo Borges dos Santos, Luís Mauro Moura and Dominique Baillis
Materials 2023, 16(5), 1891; https://doi.org/10.3390/ma16051891 - 24 Feb 2023
Cited by 1 | Viewed by 955
Abstract
The present work aims to characterize the radiative thermal properties albedo and optical thickness of Juncus maritimus fibers using a FTIR spectrometer. Measurements of normal/directional transmittance and normal and hemispherical reflectance are performed. The numerical determination of the radiative properties is conducted through [...] Read more.
The present work aims to characterize the radiative thermal properties albedo and optical thickness of Juncus maritimus fibers using a FTIR spectrometer. Measurements of normal/directional transmittance and normal and hemispherical reflectance are performed. The numerical determination of the radiative properties is conducted through the computational treatment of the Radiative Transfer Equation (RTE) using the Discrete Ordinate Method (DOM), together with the inverse method, which is done through Gauss linearization. As it is a non-linear system, iterative calculations are necessary, which demand a significant computational cost, and, to optimize this problem, the Neumann method is used for the numerical determination of the parameters. These radiative properties are useful to quantify the radiative effective conductivity. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Porous Materials and Composites)
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Review

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16 pages, 3673 KiB  
Review
Properties, Applications and Recent Developments of Cellular Solid Materials: A Review
by Girolamo Costanza, Dinesh Solaiyappan and Maria Elisa Tata
Materials 2023, 16(22), 7076; https://doi.org/10.3390/ma16227076 - 08 Nov 2023
Viewed by 1104
Abstract
Cellular solids are materials made up of cells with solid edges or faces that are piled together to fit a certain space. These materials are already present in nature and have already been utilized in the past. Some examples are wood, cork, sponge [...] Read more.
Cellular solids are materials made up of cells with solid edges or faces that are piled together to fit a certain space. These materials are already present in nature and have already been utilized in the past. Some examples are wood, cork, sponge and coral. New cellular solids replicating natural ones have been manufactured, such as honeycomb materials and foams, which have a variety of applications because of their special characteristics such as being lightweight, insulation, cushioning and energy absorption derived from the cellular structure. Cellular solids have interesting thermal, physical and mechanical properties in comparison with bulk solids: density, thermal conductivity, Young’s modulus and compressive strength. This huge extension of properties allows for applications that cannot easily be extended to fully dense solids and offers enormous potential for engineering creativity. Their Low densities allow lightweight and rigid components to be designed, such as sandwich panels and large portable and floating structures of all types. Their low thermal conductivity enables cheap and reliable thermal insulation, which can only be improved by expensive vacuum-based methods. Their low stiffness makes the foams ideal for a wide range of applications, such as shock absorbers. Low strengths and large compressive strains make the foams attractive for energy-absorbing applications. In this work, their main properties, applications (real and potential) and recent developments are presented, summarized and discussed. Full article
(This article belongs to the Special Issue Thermal and Mechanical Properties of Porous Materials and Composites)
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