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Green Insulating Materials for Automotive, Construction, and Industrial Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 2036

Special Issue Editors


E-Mail Website1 Website2
Guest Editor
Dipartimento di Architettura Costruzione e Design, Politecnico di Bari, Via Orabona n.4, 70125 Bari, Italy
Interests: hermal comfort; indoor environment quality; architectural acoustics; building simulation; energy saving and renewable energies
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Dipartimento di Architettura Costruzione e Design, Politecnico di Bari, Via Orabona n.4, 70125 Bari, Italy
Interests: building; building materials; construction; construction engineering; construction materials; sustainable construction; sustainable architecture; built environment; architecture; sustainability
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Dipartimento di Scienze dell'Ingegneria Civile e dell'Architettura, Politecnico di Bari, Via Orabona n.4, 70125 Bari, Italy
Interests: building; building materials; materials; construction; civil engineering materials; construction engineering; construction materials; construction technology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the current era, the principles of circular economy and energy saving are pillars of international protocols and agreements. The need for more versatile solutions has led to an increasing interest in environmentally friendly materials produced using green components like biobased fillers, organic additives originating from waste, and renewable resources.

Two principal factors support this choice: firstly, the use of green components in place of traditional materials to reduce environmental harm; secondly, the enhancement of thermal, physical, and acoustic performances. In this context, the use of by-products and waste to develop highly efficient materials represents an emerging research topic in various fields, with industrial, civil engineering, and automotive applications.

Studies and experimental research on different types of components and materials are welcome for this Special Issue and will be used to build an overview of the strategies to adopt.

Papers can be reviews, case studies, original studies, or meta-analyses. They should examine physical and chemical aspects of the topic, presenting mechanical, hygrothermal, and acoustic properties, or economic and environmental analyses.

Prof. Dr. Francesco Martellotta
Dr. Stefania Liuzzi
Dr. Chiara Rubino
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. Applied Sciences 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 2400 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

  • sustainable materials
  • circular economy
  • energy saving
  • circular economy
  • hygrothermal properties
  • acoustic properties
  • mechanical properties
  • acoustic properties

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Published Papers (2 papers)

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Research

27 pages, 2524 KiB  
Article
Deep Autoencoder Framework for Classifying Damage Mechanisms in Repaired CFRP
by Claudia Barile, Caterina Casavola, Dany Katamba Mpoyi and Giovanni Pappalettera
Appl. Sci. 2025, 15(3), 1209; https://doi.org/10.3390/app15031209 - 24 Jan 2025
Viewed by 457
Abstract
This study investigates the classification of damage modes in adhesively bonded carbon fiber-reinforced plastic (CFRP) composites, a critical factor in advancing lightweight automotive design. Adhesive bonding, replacing traditional riveting, improves structural integrity while reducing weight and CO2 emissions. Mechanical testing on CFRP [...] Read more.
This study investigates the classification of damage modes in adhesively bonded carbon fiber-reinforced plastic (CFRP) composites, a critical factor in advancing lightweight automotive design. Adhesive bonding, replacing traditional riveting, improves structural integrity while reducing weight and CO2 emissions. Mechanical testing on CFRP composites was performed, and acoustic emission (AE) signals were collected to evaluate damage mechanisms. A deep autoencoder (DAE) framework was developed to automate damage characterization by reducing AE signal dimensionality through singular value decomposition (SVD) and classifying features using the k-means algorithm. This approach effectively identified three primary damage modes: matrix cracking, interfacial debonding, and fiber breakage. Traditional AE features, such as entropy and amplitude were also classified and validated using spectral analysis. The DAE-based strategy demonstrated superior capability in real-time damage mode differentiation. Fractographic analysis confirmed crack growth in the adhesive layer, leading to interfacial debonding, fiber-matrix separation, and eventual fiber rupture. These findings highlight the DAE framework’s effectiveness in enhancing damage mode characterization, offering valuable insights for optimizing the structural performance of bonded CFRP composites in automotive applications. Full article
14 pages, 3749 KiB  
Article
Thermo-Regulated Cotton: Enhanced Insulation through PVA Nanofiber-Coated PCM Microcapsules
by Dilara Dirlik-Uysal, David Mínguez-García, Eva Bou-Belda, Jaime Gisbert-Payá and Marilés Bonet-Aracil
Appl. Sci. 2024, 14(11), 4725; https://doi.org/10.3390/app14114725 - 30 May 2024
Cited by 1 | Viewed by 1194
Abstract
The innovative integration of phase change materials (PCMs) into textiles through microencapsulation presents a transformative approach to developing thermally regulated fabrics. This study explores the synthesis and characterization of microcapsules containing a coconut oil core and an ethylcellulose shell, and their application on [...] Read more.
The innovative integration of phase change materials (PCMs) into textiles through microencapsulation presents a transformative approach to developing thermally regulated fabrics. This study explores the synthesis and characterization of microcapsules containing a coconut oil core and an ethylcellulose shell, and their application on cotton fabrics coated with polyvinyl alcohol (PVA) nanofibers. The dual-layer system involving microcapsules and nanofibers is designed to enhance the thermal insulation properties of textiles by regulating heat through the absorption and release of thermal energy. The microencapsulation of PCMs allows for the effective incorporation of these materials into textiles without altering the fabric’s inherent properties. In this study, the coconut oil serves as the PCM, known for its suitable phase change temperature range, while ethylcellulose provides a robust shell, enhancing the microcapsules’ structural integrity. The application of a PVA nanofibers layer not only strengthens the thermal regulation properties but also protects the microcapsules from release while the fabric is manipulated, thereby prolonging the functional life of the fabric. Comprehensive testing, including scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), confirms the successful application and durability of the microcapsules on the textiles. Thermal imaging studies demonstrate the fabric’s enhanced capability to maintain a consistent temperature, highlighting the potential of this technology in applications ranging from smart clothing to energy-efficient building materials or automotive isolation. The integration of PCMs in textiles via microencapsulation and nanofiber technology marks a significant advancement in textile engineering, offering new opportunities for the development of smart and sustainable materials. The study demonstrates the promising potential of integrating PCMs into textiles using microencapsulation and nanofiber technologies. Despite the initially modest insulation improvements, the methodology provides a robust foundation for further research and development. Full article
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