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Finite Element Analysis of Ply Orientation Effects in Carbon Fiber/Epoxy Composite External Fixators

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Abstract:

This study presents a finite element analysis (FEA) of an external fixator rod incorporating a carbon fiber-reinforced epoxy resin composites (CFREs) to evaluate its mechanical performance. A detailed three-dimensional CAD model of the rod was developed, and the material properties of each component were defined using composite stacking techniques within the FEA framework. The external fixator rods were subjected to various loading conditions, including axial compression, torsion, and bending. The simulation results demonstrate that 18 mm CFREs rods exhibit superior resistance to compressive, torsional, and bending loads compared to conventional stainless-steel rods. These findings highlight the potential of composite materials to enhance the structural performance of external fixators in orthopedic applications. In addition, four carbon fiber ply orientation cases were investigated to identify the optimal configuration for load-bearing capacity. The [60°, 0°, −60°, 0°] ply orientation was found to provide the best performance under axial compression, offering improved load resistance and reducing deformation between fractured bone segments, thereby minimizing the risk of bone collision.

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Periodical:

Key Engineering Materials (Volume 1058)

Pages:

47-53

DOI:

https://doi.org/10.4028/p-s9VG7j

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Cite this paper

Online since:

June 2026

Authors:

Karunamit Saensuriwong*, Kitsana Khodcharad, Anawin Pechbooranin, Atthaphon Ariyarit, Anusorn Boksawat, Tharathep Phiboon

Keywords:

Carbon Fiber-Reinforced Epoxy Resin Composites, Composite Materials, External Fixators, Finite Element Analysis, Mechanical Properties

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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