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Crystals
Special Issues
Recent Advances in the Mechanical Properties of Fiber Composite Materials
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Recent Advances in the Mechanical Properties of Fiber Composite Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Hybrid and Composite Crystalline Materials".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2358

Special Issue Editors

Dr. Shouzheng Sun

E-Mail Website
Guest Editor
School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: resin-based composites; nanocomposites; automated fiber placement; continuous fibre 3D/4D printing; filament winding; process forming; mechanical properties
Prof. Dr. Zhenyu Han

E-Mail Website
Guest Editor
School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: fiber-reinforced polymers; 3D printing; intelligent manufacturing; filament winding; process research

Special Issue Information

Dear Colleagues,

Fiber composites are versatile advanced materials that are employed in a wide range of advanced applications due to their excellent properties, such as a short production time, long-term cost savings, light weight and high durability. This Special Issue of Crystals is dedicated to the latest research advances in fiber composite materials and their mechanical properties. We encourage the submission of papers that address issues at the frontier of research and the application of composites in various fields.

Topics for this Special Issue include, but are not limited to, the durability and mechanical properties of fiber composites; composites made from different types of fibers, including recycled and natural fibres; composites containing nanomaterials and biocomposites; composite components; the modification of composites; the long-term performance of composites; fire protection of composites; various forming and processing methods; and the application of composites. Original articles and reviews are welcome.

Dr. Shouzheng Sun
Prof. Dr. Zhenyu Han
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. Crystals is an international peer-reviewed open access monthly 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 2100 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

  • resin-based composites
  • fiber-reinforced polymers
  • biocomposites 
  • nanocomposites 
  • manufacturing methods 
  • process research 
  • mechanical properties
  • natural fibers

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

Published Papers (2 papers)

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Research

19 pages, 10925 KiB  
Article
Optimization of Process Parameters and Microscopic Morphology of Multi-Walled Carbon Nanotubes/PEEK Films Using the Vacuum Suction Filtration Method
by Mingyu Liu, Hongya Fu, Songsong Yu, Ziang Jin, Zhenyu Han and Shouzheng Sun
Crystals 2024, 14(6), 561; https://doi.org/10.3390/cryst14060561 - 17 Jun 2024
Viewed by 705
Abstract
Multi-walled carbon nanotubes (MWCNTs) are a high-quality interlamination reinforcement material, but the high viscosity of polyetheretherketone (PEEK) prevents good fusion between MWCNTs and PEEK. This study proposes a method to achieve the complete integration of MWCNTs and PEEK through the preparation of a [...] Read more.
Multi-walled carbon nanotubes (MWCNTs) are a high-quality interlamination reinforcement material, but the high viscosity of polyetheretherketone (PEEK) prevents good fusion between MWCNTs and PEEK. This study proposes a method to achieve the complete integration of MWCNTs and PEEK through the preparation of a composite film using the vacuum suction filtration (VSF) method and optimizes the process parameters. An orthogonal experiment with three factors (filter paper pore size, ultrasonic dispersion time, and PEEK content) at three levels is designed, and mechanical performance testing and microscopic morphology observation are conducted. The influence of the three factors of filter paper pore size, ultrasonic time, and PEEK content on the elastic modulus and tensile strength of the film is investigated. The results are a filter paper pore size of 0.45 μm, ultrasonic time of 8.3 h, and PEEK content of 336.524 mg. The mechanical performance obtained under the optimal process parameters are an elastic modulus of 2437.5723 MPa and a tensile strength of 46.5196 MPa. This optimal process increases the elastic modulus by 12.3152% while maintaining a high tensile strength. Full article
(This article belongs to the Special Issue Recent Advances in the Mechanical Properties of Fiber Composite Materials)
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13 pages, 2645 KiB  
Article
Case Study on the Performance of High-Flowing Steel-Fiber-Reinforced Mixed-Sand Concrete
by Haibin Geng, Yanyan Zhang, Huijuan Wang, Hao Zhong, Changyong Li and Fenglan Li
Crystals 2023, 13(10), 1507; https://doi.org/10.3390/cryst13101507 - 17 Oct 2023
Viewed by 999
Abstract
To promote the efficient utilization of bulk solid wastes, including superfine river sand and fly ash, high-flowing steel-fiber-reinforced mixed-sand concrete (SFRMC) was developed in this study. Superfine river sand and coarse manufactured sand were mixed in a proportion of 4:6 to make the [...] Read more.
To promote the efficient utilization of bulk solid wastes, including superfine river sand and fly ash, high-flowing steel-fiber-reinforced mixed-sand concrete (SFRMC) was developed in this study. Superfine river sand and coarse manufactured sand were mixed in a proportion of 4:6 to make the mixed sand. Fly ash, with a content of 30~75%, was blended with 0~12% silica fume on the premise of equivalent activity. The water dosage and sand ratio were adjusted with the volume fraction of steel fiber, which varied from 0.4 to 1.6%, to ensure the high flowability of fresh SFRMC. The mechanical properties, including cubic and axial compressive strengths, modulus of elasticity, splitting tensile strength, and flexural strength and toughness of the SFRMC, were analyzed, accounting for the influences of the contents of fly ash and steel fiber. The predictive formulas for the splitting tensile strength, modulus of elasticity, and flexural strength were proposed by introducing the influencing factors of steel fiber. The SFRMC showed an increased modulus of elasticity with increases in the steel fiber factor, and flexural toughness was enhanced with increased contents of both steel fiber and fly ash. Full article
(This article belongs to the Special Issue Recent Advances in the Mechanical Properties of Fiber Composite Materials)
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