3D printing of composite sandwich structures using continuous carbon fiber and fiber tension

By Kentaro Sugiyama, Ryosuke Matsuzaki, M. Ueda, A. Todoroki, Y. Hirano. Composites. Part A, Applied science and manufacturing, 2018

282 citations recorded by the source corpus.

Abstract Many modern aircraft components are made from carbon fiber reinforced polymer sandwich structures with two outer skins possessing high tensile and compressive strengths separated by a lightweight core that provides shear stiffness. However, the conventional manufacturing method involves a complicated and costly bonding process. This study used a continuous carbon fiber 3D printer to manufacture sandwich structures with honeycomb, rhombus, rectangle, and circle core shapes as a single piece. The functional properties of the sandwich structures were quantified by shape evaluations and three-point bending tests. Three-point bending tests showed maximum load and flexural modulus increased as effective density increased for all core shapes, but the rhombus core shape was the strongest. Because the mechanical properties depended on the core shape, continuous carbon fiber 3D printers can be used to flexibly design core shapes that satisfy the desired strength and stiffness.

Subfields: Automotive Engineering, General Materials Science, Industrial and Manufacturing Engineering

View Paper: https://www.semanticscholar.org/paper/b29ae302ad17da8545ec9f607530212de3a5776c

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Citations in the corpus

Compression behavior and energy absorption of 3D printed continuous fiber reinforced composite honeycomb structures with shape memory effects (2021, methodology): “In this process, the pre-impregnated thermoplastic fiber filaments are utilized to fabricate the honeycomb sandwich structures through fiber tension according to a customized path [29].”