Immenga, Mark (2026) Bending Stiffness of Continuous Fiber Reinforced 3D-Printed Honeycomb Sandwich Panel Cores. Research Project, Industrial Engineering and Management.
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Abstract
This study investigates the bending stiffness of continuous fiber reinforced 3D printed honeycomb sandwich panel cores, focusing on the combined influence of material properties, fiber reinforcement, and core geometry. At the material level, both quasi-static and dynamic experimental methods were applied to characterize the mechanical behavior of additively manufactured Onyx® and carbon fiber reinforced composites. A combination of these experimental methods was found to be suitable for obtaining a reliable estimate of the effective material properties. At the structural level, sandwich panels with varying honeycomb cell angles and fiber contents were tested under three-point bending. The results show that core geometry and filament orientation significantly influence flexural stiffness, in some cases more than relative density. In addition, the location of fiber reinforcement within the core was found to be critical, with reinforcement near the neutral axis contributing less effectively to bending stiffness. The flexural modulus could be determined consistently, whereas failure behavior showed greater variability due to local effects such as adhesion quality and manufacturing imperfections. Overall, the results highlight the importance of geometric design and fiber placement in optimizing the mechanical performance of 3D-printed sandwich structures.
| Item Type: | Thesis (Research Project) |
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| Supervisor name: | Krushynska, A.O. and Bose, R.K. |
| Degree programme: | Industrial Engineering and Management |
| Thesis type: | Research Project |
| Language: | English |
| Date Deposited: | 30 Apr 2026 08:49 |
| Last Modified: | 30 Apr 2026 08:49 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/37300 |
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