Study on Inter/Intralayer Layout and Mechanical Behavior of 3D Printed Hybrid Continuous Carbon/Glass Fiber Composites

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Abstract
Fused deposition technology has been successfully used for the fabrication of continuous hybrid fiber reinforced composites (CHFRC), and both the hybrid ratio and fiber layout exert a significant influence on the mechanical properties of the additive manufactured parts. In this study, the effects of the hybrid ratio and fiber layout of continuous carbon/glass fiber on the mechanical properties of 3D printed inter/intralayer hybrid composites were investigated. Additionally, the hybrid effect was considered in the mixing law to predict the tensile strength of CHFRCs with inter/intralayer layouts. Results indicate that compared to interior placement, placing glass fibers on the exterior gives CHFRCs a 10%–20% increase in tensile strength. Moreover, exterior glass fiber placement results in a 29% increase in flexural strength at a hybrid ratio of 0.5 compared to interior placement. Furthermore, the modified tensile strength prediction model maintains estimation errors within 3.7%.
Funding Information
  • National Key Research and Development Program of China (2023YFB4605302)

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