3D printing of optimized composites with variable fiber volume fraction and stiffness using continuous fiber

Kentaro Sugiyama, Ryosuke Matsuzaki, Andrei V. Malakhov, Alexander N. Polilov, Masahito Ueda, Akira Todoroki, Yoshiyasu Hirano

研究成果: Article査読

19 被引用数 (Scopus)

抄録

In this study, we optimized the curved fiber trajectories to realize variable fiber volume fraction and stiffness composites (VVfSC) using a continuous fiber composite 3D printer. During optimization, the fiber orientation was maintained along the principal stress direction based on preliminary stress field calculations, and the fiber trajectories were subsequently obtained. The fiber volume fraction was calculated from the obtained fiber trajectories; then, stress field calculations and redetermination of the fiber trajectories were performed. Optimization was achieved by repeating this sequence until convergence was obtained. Based on the optimization result, the specimens were molded using a continuous carbon fiber 3D printer and evaluated with bolt joint tensile tests. It was demonstrated that the stiffness and strength per unit weight of the optimized VVfSC were 9.4 and 1.6 times greater than those of conventional linear laminates, respectively.

本文言語English
論文番号107905
ジャーナルComposites Science and Technology
186
DOI
出版ステータスPublished - 20 1 2020

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