Localised Fibre Reinforcement for Bearing Regions in 3D Printed Composites

DOI

10.2991/978-94-6239-813-9_10How to use a DOI?

Keywords

Additive manufacturing; continuous fibre; Onyx; HSHT GF; bearing response; Classical Laminate Theory

Abstract

This study investigates the influence of localised continuous fibre toolpaths on the structural behaviour of additive manufactured composite components containing geometric defects. Using a Markforged platform, 40-layer symmetrical specimens ( O n y x 4 / G F 32 / O n y x 4 ) were manufactured with a central 6 mm hole. Three distinct configurations were evaluated to assess fibre architecture variations: a baseline quasi-isotropic layout (G1), and two architectures reinforced with 2 (G2) and 4 (G3) concentric circular fibre paths around the hole boundary. Classical Laminate Theory was used to establish the global laminate stiffness, while a geometric reinforcement model quantified local circumferential fibre continuity surrounding the hole, yielding a uniform global in-plane stiffness of 8.76 GPa. Analytical results indicate that while the localised rings result in a negligible global fibre volume variation ( Δ V f = 0.10 % ), they significantly enhance geometric fibre path continuity adjacent to the defect ( 138.23 mm in G3 compared to 0 mm in G1). This localised continuity is hypothesised to optimise stress distribution and load transfer mechanisms under complex bearing stress fields, establishing a predictive analytical framework for subsequent experimental validation.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Mary Hanna
AU  - Khalid Saeed
AU  - Cormac McGarrigle
PY  - 2026
DA  - 2026/10/29
TI  - Localised Fibre Reinforcement for Bearing Regions in 3D Printed Composites
BT  - Proceedings of the  Global Symposium on Adaptive Manufacturing (GSAM 2026)
PB  - Atlantis Press
SP  - 28
EP  - 30
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-813-9_10
DO  - 10.2991/978-94-6239-813-9_10
ID  - Hanna2026
ER  -