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Special Issue "Fibre Reinforced Composites: Interfacial Modifications and Property"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Macromolecular Chemistry".

Deadline for manuscript submissions: 29 February 2020.

Special Issue Editor

Prof. Youhong Tang
E-Mail Website
Guest Editor
Institute for NanoScale Science and Technology, Flinders University, South Australia 5042, Australia
Interests: advanced functional composites and marine structures; nanomaterials and nanocomposites; FRP composites and structures; biomaterials and biocomposites; aggregation-induced emission (AIE) phenomenon and its applications
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Special Issue Information

Dear Colleagues,

A growing demand exists for fibre-reinforced composites with enhanced properties, which are essential for applications in engineering fields. Although various fibre-reinforced composites exhibit excellent properties, poor interfacial interaction between matrix and fibres is an existing problem. Interfacial interactions between matrix and fibres play an important role in the mechanical, thermal, and corrosion resistance properties of the composites, to name but a few. In most cases, the failure of fibre-reinforced composites is strongly related to their poor interfacial interactions.

Numerous efforts have been made to improve the interfacial behaviours of fibre-reinforced composites and understand their enhancement mechanisms. Consequently, there is a need for a Special Issue to provide a broad overview and address the various aspects of this field. For readers, this Special Issue will provide an attractive opportunity to more easily access information concerning the different facets of the research into the interfaces of fibre-reinforced composites. For the authors, it will be an appropriate opportunity to increase the visibility of their results and analyses, in addition to reasserting their role as an active member of the scientific community in fibre-reinforced composites. This Special Issue will contain contributions discussing all of the aspects broadly indicated by the keywords. Reviews articles by experts in the field are also welcome.

Assoc. Prof. Youhong Tang
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 papers will be 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. Molecules 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 1800 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

  • Fiber reinforced composites
  • Interface modifications and characterizations
  • Fiber surface modifications
  • Interfacial interaction mechanism
  • Damage detections

Published Papers (2 papers)

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Research

Open AccessArticle
Location of Tensile Damage Source of Carbon Fiber Braided Composites Based on Two-Step Method
Molecules 2019, 24(19), 3524; https://doi.org/10.3390/molecules24193524 - 28 Sep 2019
Abstract
Acoustic emission (AE) source localization is one of the important purposes of nondestructive testing. The localization accuracy reflects the degree of coincidence between the identified location and the actual damage location. However, the anisotropy of carbon fiber three-dimensional braided composites will have a [...] Read more.
Acoustic emission (AE) source localization is one of the important purposes of nondestructive testing. The localization accuracy reflects the degree of coincidence between the identified location and the actual damage location. However, the anisotropy of carbon fiber three-dimensional braided composites will have a great impact on the accuracy of AE source location. In order to solve this problem, the time-frequency domain characteristics of AE signals in a carbon fiber braided composite tensile test were analyzed by Hilbert–Huang transform (HHT), and the corresponding relationship between damage modes and AE signals was established. Then, according to the time-frequency characteristics of HHT of tensile acoustic emission signals, the two-step method was used to locate the damage source. In the first step, the sound velocity was compensated by combining the time-frequency analysis results with the anisotropy of the experimental specimens, and the four-point circular arc method was used to locate the initial position. In the second step, there is an improvement of the Drosophila optimization algorithm, using the ergodicity of the chaotic algorithm and congestion adjustment mechanism in the fish swarm algorithm. The smoothing parameters and function construction in the probabilistic neural network were optimized, the number of iterations was reduced, the location accuracy was improved, and the damage mode of composite materials was obtained. Then, the damage location was obtained to achieve the purpose of locating the damage source. Full article
(This article belongs to the Special Issue Fibre Reinforced Composites: Interfacial Modifications and Property)
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Open AccessFeature PaperArticle
Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers
Molecules 2019, 24(18), 3367; https://doi.org/10.3390/molecules24183367 - 16 Sep 2019
Abstract
The effects of thermoplastic polyimide (PI) and polypropylene (PP) fibers and areal density of toughened layer on interlaminar fracture toughness and impact performance of carbon fiber/epoxy (CF/EP) laminated composites were studied. Mode I interlaminar fracture toughness (GIC) was analyzed via double [...] Read more.
The effects of thermoplastic polyimide (PI) and polypropylene (PP) fibers and areal density of toughened layer on interlaminar fracture toughness and impact performance of carbon fiber/epoxy (CF/EP) laminated composites were studied. Mode I interlaminar fracture toughness (GIC) was analyzed via double cantilever beam (DCB) tests. When comparing for the toughener type, PI played a positive role in enhancing the mode-I fracture toughness, while PP was not effective due to the less fiber bridge formed during composite curing. The toughening effects of areal density of PI were further investigated by end notched flexure (ENF) testing and low velocity impact testing to better understand the toughening mechanisms. The results revealed that the toughening effect reached its best effectiveness when the areal density of toughened layer was 30 g/m2. Compared with the control group, GIC and GIIC of CF/EP laminated composite were increased by 98.49% and 84.07%, and Fmax and Ee were enhanced by 92.38% and 299.08% under low velocity impact. There is no obvious delamination phenomenon on the surface of laminates after low velocity impact, indicating the improved interlaminar and impact performance of laminated composite. Full article
(This article belongs to the Special Issue Fibre Reinforced Composites: Interfacial Modifications and Property)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Type: Article
Title: Surface treatment on the carbon fiber and yarns to enhance the mechanicalproperties of composites
Author: Lan Yao
Affiliation: Donghua University, Shanghai, China
Abstract: Carbon fiber reinforced polymer composites have wide application in the automotive, aerospace and construction industries. However, due to the chemically inert surface of carbon fiber, the interfacial problems always exist when the carbon fiber was infiltrated by the resin. In this study, the PPY and CNT were deposited by the self-assembly method on the carbon fiber surface in order to improve the interfacial properties between carbon fiber and epoxy resin. After treatment, the interfacial strength increased by 55.7%. The micromorphology comparison before and after treatment was also detected using SEM, XPS and AFM. Additionally, PPY and CNT were added to the epoxy sizing agent to enhance the strength of carbon yarns. The abrasion resistance of the sized carbon yarns was significantly improved, and the fuzzes weights were reduced.

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