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Advancements in the Structural Integrity of Composite Materials

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

Deadline for manuscript submissions: 20 September 2025 | Viewed by 1390

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, Faculty of Sciences and Technology of the University of Coimbra, University of Coimbra, Coimbra, Portugal
Interests: polymer-based composites; polymer-based nanocomposites; mechanical behavior
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Guest Editor
Escuela Politécnica Superior, Universidad de Sevilla, Seville, Spain
Interests: finite-element method; composite materials; mechanical behaviour

Special Issue Information

Dear Colleagues,

The utilization of composite materials is progressively supplanting traditional materials such as metals due to their advantageous properties, including lightness, high strength, design flexibility, and extended service life. However, this transition presents challenges in designing composite structures, forecasting damage initiation and progression, and establishing safe operational limits to ensure structural integrity. Addressing these complexities, this Special Issue aims to furnish essential data, models, and tools crucial for understanding structural integrity and predicting the lifetimes of composite materials. This endeavor necessitates the use of sophisticated mathematical, computational, and experimental methodologies. Therefore, we invite scholars to contribute original research and review papers focusing on enhancing the reliability of structural integrity in composite materials through precise and efficient modeling, design, analysis, experimental validation, and other pertinent approaches.

Dr. Paulo Nobre Balbis dos Reis
Dr. Luis Miguel Marques Ferreira
Guest Editors

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Keywords

  • fiber-reinforced polymer
  • composite 3D printing
  • structural integrity
  • testing
  • numerical modeling

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Published Papers (1 paper)

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Research

11 pages, 1498 KiB  
Article
Durability of Cutting Tools Obtained by U-FAST Technology in Particleboard Machining
by Joanna Wachowicz, Jacek Wilkowski, Tomasz Dembiczak and Robert Kruzel
Materials 2025, 18(3), 636; https://doi.org/10.3390/ma18030636 - 31 Jan 2025
Viewed by 554
Abstract
The basic material used for tools for machining wood and wood-based materials is WC-Co (Tungsten Carbide with Cobalt)-cemented carbide. The advantages of WC-Co carbides are significant resistance to high temperatures, high hardness, and wear resistance. Wood-based materials, such as particleboard, are particularly difficult [...] Read more.
The basic material used for tools for machining wood and wood-based materials is WC-Co (Tungsten Carbide with Cobalt)-cemented carbide. The advantages of WC-Co carbides are significant resistance to high temperatures, high hardness, and wear resistance. Wood-based materials, such as particleboard, are particularly difficult to machine due to their considerable inhomogeneity and the presence of various types of hard particle inclusions, such as sand. In addition, unlike metals, wood has a low thermal conductivity, which means that most of the heat generated during milling is transferred to the tool. The consequence of this phenomenon is an increased tool temperature. In addition, the use of a coolant is not possible when machining wood-based materials. The durability of carbide blades is mainly influenced by grain size and cobalt content. When analysing WC-Co as a tool material, it is necessary to consider how it is obtained, as this can also significantly affect its properties. This paper presents the results of a durability study of cutting blades produced by the innovative Upgraded Field-Assisted Sintering Technology (U-FAST) sintering method during particleboard milling. The wear of the blades was measured until the wear value, i.e., the maximum loss at the contact surface VBmax, was 0.2 mm. Three groups of WC-Co carbides with different WC grain sizes were tested: 0.1, 0.4, and 0.8 µm. Three rotational speeds were used: 12,000, 15,000, and 18,000 rpm. In the machinability tests, blades with a WC grain size of 0.8 µm showed a twofold increase in tool life compared to commercial blades with a similar grain size gradation. Full article
(This article belongs to the Special Issue Advancements in the Structural Integrity of Composite Materials)
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