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Green Sandwich Composite Structures for UAV Wings: Experimental Validation and Numerical Simulation

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Abstract:

Growing environmental awareness and the challenges posed by climate change have driven the development of sustainable composites to reduce dependence on fossil resources and mitigate ecological impacts. Conventional composites, despite their high mechanical performance, are constrained by greenhouse gas emissions and limited recyclability, motivating the adoption of “green composites” based on natural fibers, recycled constituents, and bio-based resins. This study presents a sustainable sandwich composite integrating flax fibers, a bio-based epoxy matrix, and a recycled PET foam core. Flexural performance was evaluated through finite element analysis (FEA) in ANSYS Workbench and validated by three-point bending tests. The results show that the 3C specimen achieved a maximum load of 579.92 N, with a deviation of 4.2% from simulation at 6 mm deflection, and all tested specimens exhibited discrepancies below 5%. These findings confirm the suitability of the developed composites for structural applications such as UAV wings, aligning high mechanical performance with environmental sustainability.

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Periodical:

Materials Science Forum (Volume 1194)

Pages:

67-72

DOI:

https://doi.org/10.4028/p-dyxlP1

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Online since:

June 2026

Authors:

Kitsana Khodcharad, Veena Phunpeng, Watcharapong Patangtalo*, Kreetiwat Chaiyasin, Wipada Boransan

Keywords:

Finite Element Method, Flax Fiber, Natural Fiber Reinforced, Sandwich Structure

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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