Special Issue "Through Thickness-Reinforced Composites"

A special issue of Journal of Composites Science (ISSN 2504-477X).

Deadline for manuscript submissions: 31 August 2022.

Special Issue Editors

Prof. Ivana K Partridge
E-Mail Website
Guest Editor
University of Bristol, Bristol Composites Institute, Queen’s Building, University Walk, BS8 1TR
Interests: Z-pinning; tufting; composites damage tolerance; resin toughening; cure monitoring
Prof. Stephen R. Hallett
E-Mail Website
Guest Editor
University of Bristol, Bristol Composites Institute, Queen’s Building, University Walk, BS8 1TR
Interests: composites failure mechanisms; impact; high rate effects; fatigue; cohesive zone formulations; simulation
Dr. Giuliano Allegri
E-Mail Website
Guest Editor
Department of Aerospace Engineering, University of Bristol, University Walk, Clifton BS8 1TR, Bristol, UK
Interests: composite materials/structures; probabilistic aspects of material fatigue; aeroelastic design

Special Issue Information

Dear Colleagues,

Through-the-thickness reinforcement techniques applied to fibre reinforced polymer matrix composites include Z-pinning, tufting, stapling and various forms of stitching. When applied in carefully selected locations within a composite structure, these techniques have been shown to be highly effective in limiting or slowing down the growth of delaminations. 

What still remains to be established is how this delamination reduction can be achieved without a detriment to the in-plane dominated load resistance and how the manufacturability and the cost effectiveness of the different approaches compare to each other and to the rapidly developing 3D weaving techniques.

Hybridisation of materials used for the through-the-thickness elements offers new levels of multifunctionality to be exploited in damage tolerance, damage sensing and new ways to improve processing efficiency in manufacture. Experimentally validated modelling approaches being developed for the evaluation of all these aspects offer the most efficient means of selection and valid comparisons within the spectrum of the technologies and hence become the most effective design tool in this context.

Prof. Ivana K Partridge
Prof. Stephen R. Hallett
Dr. Giuliano Allegri
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 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. Journal of Composites Science is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • Z-pinning
  • Tufting
  • Stitching
  • 3D weaving
  • Automated manufacturing
  • Mechanical performance
  • Simulation

Published Papers (1 paper)

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Research

Article
Characterization and Numerical Modelling of Through-Thickness Metallic-Pin-Reinforced Fibre/Thermoplastic Composites under Bending Loading
J. Compos. Sci. 2020, 4(4), 188; https://doi.org/10.3390/jcs4040188 - 16 Dec 2020
Viewed by 649
Abstract
Through-Thickness Reinforcement (TTR) technologies are well suited to improving the mechanical properties in the out-of-plane direction of fibre-reinforced composites. However, besides the enhancement of delamination resistance and thus the prevention of overall catastrophic failure, the presence of additional reinforcement elements in the composite [...] Read more.
Through-Thickness Reinforcement (TTR) technologies are well suited to improving the mechanical properties in the out-of-plane direction of fibre-reinforced composites. However, besides the enhancement of delamination resistance and thus the prevention of overall catastrophic failure, the presence of additional reinforcement elements in the composite structure affects also the mechanical properties in in-plane direction. In this work, the flexural behaviour of a glass-polypropylene (GF/PP) hybrid yarn-based composite with TTR in form of metallic pins has been investigated experimentally and numerically. The insertion of the metallic pins is realized via thermoactivated pinning technology (TAP). In four-point-bending tests, it is shown that the flexural stiffness and strength decreases with an increase of the overall pin density. Hereby, it is observed that the pins act as crack initiators. For numerical modelling on specimen level, a continuum damage mechanic (CDM) model is used to predict the nonlinear deformation response of the composite, as well as fibre fracture and matrix cracking. A debonding and slipping phenomena of the pin in the composite is modelled by a cohesive zone modelling approach for the interface between pin and composite. Full article
(This article belongs to the Special Issue Through Thickness-Reinforced Composites)
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