4.7 Article

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

期刊

POLYMERS
卷 13, 期 10, 页码 -

出版社

MDPI
DOI: 10.3390/polym13101653

关键词

interlayer adhesion; 3D printing; composites; continuous carbon fibre

资金

  1. Research Council of Lithuania [NET-20-1]

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This study utilized modified FDM technology for the production of continuous carbon fiber-reinforced composites, aiming to evaluate the shear strength of 3D-printed composite structures. Results demonstrated that reducing layer height significantly enhances shear strength, while the impact of printing line width on shear strength is relatively minor. Additionally, there is a linear correlation between shear area and overlap length with shear force.
Carbon fibre-reinforced materials are becoming more and more popular in various fields of industries because of their lightweight and perfect mechanical properties. Additive manufacturing technologies can be used for the production of complex parts from various materials including composites. Fused deposition modelling (FDM) is an excellent technology for the production of composite structures reinforced with short or continuous carbon fibre. In this study, modified FDM technology was used for the production of composites reinforced with continuous carbon fibre. The main aim of this study is to evaluate the shear strength of 3D-printed composite structures. The influence of printing layer height and line width on shear strength was analysed. Results showed that layer height has a significant influence on shear strength, while the influence of printing line width on shear strength is slightly smaller. Reduction of layer height from 0.4 mm to 0.3 mm allows increasing shear strength by about 40 percent. Moreover, the influence of the shear area and overlap length on shear force showed linear dependency, in which the shear area is increasing the shear force increasing proportionally. Finally, the results obtained can be used for the design and development of new 3D-printed composite structures.

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