Novel method for interlaminar reinforcement using polymer/fibre pins

E Archer; William Moses; Thomas Dooher; AT McIlhagger; Sean Duffy

doi:10.1016/j.compstruct.2022.116010

Novel method for interlaminar reinforcement using polymer/fibre pins

E Archer, William Moses, Thomas Dooher, AT McIlhagger, Sean Duffy

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Abstract

A common theme in the application of through-thickness reinforcement is the desire to minimize/eliminate any reduction in in-plane properties. In this work a novel method of reinforcement is introduced using a polymer/fibre pin. Similar in concept to the traditional metalworking process of riveting these pins are placed through the thickness with deliberate excess length. The application of heat and pressure deforms the exposed ends of the pin against the part surface. The resultant preform maintains its shape and may be re-formed with further heat and pressure with the reinforcement conforming to the desired shape. Samples manufactured using this method are tested under quasi-static tensile loading and show no significant change in properties due to the pin addition. Samples tested under mode 1 show further refinement of the manufacture method is required, with shallow pin angles resulting in sub-optimal performance.

Original language	English
Article number	116010
Number of pages	10
Journal	Composite Structures
Volume	298
Early online date	1 Aug 2022
DOIs	https://doi.org/10.1016/j.compstruct.2022.116010
Publication status	Published (in print/issue) - 15 Oct 2022

Bibliographical note

Funding Information:
This work was supported primarily by the Northern Ireland Department For the Economy (DFE). Additional assistance was provided by the Engineering and Physical Sciences Research Council (EPSRC) Future Composites Manufacturing Hub. In-Kind support was provided by Spirit AeroSystems (Formerly Bombardier Aviation).

Publisher Copyright:
© 2022 The Authors

Keywords

Through thickness reinforcement
Tensile
Mode 1

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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1-s2.0-S0263822322007619-mainFinal published version, 9.68 MBLicence: CC BY

Cite this

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title = "Novel method for interlaminar reinforcement using polymer/fibre pins",

abstract = "A common theme in the application of through-thickness reinforcement is the desire to minimize/eliminate any reduction in in-plane properties. In this work a novel method of reinforcement is introduced using a polymer/fibre pin. Similar in concept to the traditional metalworking process of riveting these pins are placed through the thickness with deliberate excess length. The application of heat and pressure deforms the exposed ends of the pin against the part surface. The resultant preform maintains its shape and may be re-formed with further heat and pressure with the reinforcement conforming to the desired shape. Samples manufactured using this method are tested under quasi-static tensile loading and show no significant change in properties due to the pin addition. Samples tested under mode 1 show further refinement of the manufacture method is required, with shallow pin angles resulting in sub-optimal performance.",

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AU - Moses, William

AU - Dooher, Thomas

AU - McIlhagger, AT

AU - Duffy, Sean

N1 - Funding Information: This work was supported primarily by the Northern Ireland Department For the Economy (DFE). Additional assistance was provided by the Engineering and Physical Sciences Research Council (EPSRC) Future Composites Manufacturing Hub. In-Kind support was provided by Spirit AeroSystems (Formerly Bombardier Aviation). Publisher Copyright: © 2022 The Authors

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AB - A common theme in the application of through-thickness reinforcement is the desire to minimize/eliminate any reduction in in-plane properties. In this work a novel method of reinforcement is introduced using a polymer/fibre pin. Similar in concept to the traditional metalworking process of riveting these pins are placed through the thickness with deliberate excess length. The application of heat and pressure deforms the exposed ends of the pin against the part surface. The resultant preform maintains its shape and may be re-formed with further heat and pressure with the reinforcement conforming to the desired shape. Samples manufactured using this method are tested under quasi-static tensile loading and show no significant change in properties due to the pin addition. Samples tested under mode 1 show further refinement of the manufacture method is required, with shallow pin angles resulting in sub-optimal performance.

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KW - Tensile

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ER -

Novel method for interlaminar reinforcement using polymer/fibre pins

Abstract

Bibliographical note

Keywords

UN SDGs

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Cite this