Low strain rate mechanical performance of balsa wood and carbon fibre-epoxy-balsa sandwich structures

The focus of this study is the experimental assessment of the mechanical behaviour of balsa wood and its sandwich structures, where balsa serves as the core, supported by carbon fibre-epoxy skin layers. A comprehensive characterisation is conducted on the mechanical behaviour of balsa wood and carbo...

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Bibliographic Details
Published in:Composites. Part C, Open access Open access, 2023-10, Vol.12, p.100416, Article 100416
Main Authors: Tüfekci, Mertol, Öztekin, Vehbi, Pir, İnci, Alioğlu, Murat, Dikicioğlu, Can, Dikicioğlu, Adnan, Tüfekci, Ekrem
Format: Article
Language:English
Subjects:
Balsa wood
Carbon fibre epoxy
Orthotropic material
Sandwich structure
Stiffness
Strength
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Summary:The focus of this study is the experimental assessment of the mechanical behaviour of balsa wood and its sandwich structures, where balsa serves as the core, supported by carbon fibre-epoxy skin layers. A comprehensive characterisation is conducted on the mechanical behaviour of balsa wood and carbon fibre-epoxy balsa core sandwich structures subjected to a range of low strain rates. Initially, the study undertakes a consistent procedure for sample preparation. Subsequently, the characterisation of the manufactured composite structures is performed experimentally. A stereo microscope is employed for a detailed visual inspection of the internal structure of the balsa wood and the sandwich structures. Furthermore, the mechanical characterisation is carried out with three-point bending tests at a range of strain rates from 0.1 % to 6 % strain per minute. This research reveals key findings about balsa wood and its sandwich structures, highlighting their performance and their sensitivity even under low strain rates.
ISSN:2666-6820
2666-6820
DOI:10.1016/j.jcomc.2023.100416