Ho-Nguyen-Tan, Thuan Kim, Young Jae Shin, Geun Sik Hwang, Jun Yeon Kim, Minkook Yoon, Soon Ho 2025-04-09T07:00:07Z 2025-04-09T07:00:07Z 2025-04-09 2025-06 1359-8368 https://pubs.kist.re.kr/handle/201004/152187 This paper presents an integration of level set-based anisotropic topology optimization and 3D printing for designing continuous carbon fiber (CCF)-reinforced polymer composite structures. During the optimization process, geometric boundaries of the composite structure are updated by solving a reaction-diffusion equation. Based on these boundaries, the fast marching algorithm is employed to generate tailored CCF paths across the structural domain. This approach ensures consistency of the fiber path layout in the numerical topology optimization and the corresponding 3D-printed model. To validate performance, the 3D-printed composite structure using tailored CCF paths is compared with structures using fixed fiber paths orientations of 0 degrees, 30 degrees, 45 degrees, and 60 degrees, respectively. The numerical findings closely align with the experimental results for all study cases. Furthermore, the topology-optimized structure with tailored CCF paths exhibits superior performance. English Pergamon Press Ltd. Anisotropic topology optimization and 3D printing for composite structures with tailored continuous carbon fiber paths Article 10.1016/j.compositesb.2025.112371 1 Composites Part B: Engineering, v.299 Composites Part B: Engineering 299 N scie scopus 001454712800001 2-s2.0-105000509752 Engineering, Multidisciplinary Materials Science, Composites Engineering Materials Science Article DESIGN Anisotropic topology optimization Level set method 3D printing Continuous carbon fiber Variable stiffness composite