Journal
MATERIALS TODAY COMMUNICATIONS
Volume 29, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mtcomm.2021.102869
Keywords
3D printed; Continuous carbon fiber; Honeycomb structure; Drop-weight impact; Failure modes
Categories
Funding
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX2021013]
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Continuous carbon fiber reinforced 3D printed honeycomb structures exhibit improved impact resistance compared to non-reinforced structures. Finite element modeling and CT scanning are effective tools for simulating and detecting internal damage during impact.
Continuous carbon fiber reinforced 3D printed parts have been widely researched due to their excellent mechanical and thermal properties. This research presents a continuous carbon fiber reinforced 3D printed honeycomb structure, which is manufactured by a modified 3D printer. For comparison, the drop-weight impact test of the honeycomb structure with continuous fiber reinforced and non-reinforced pure matrix of polylactide (PLA) is printed and the results show that the continuous carbon fiber greatly improved the impact resistance of the honeycomb structure. The finite element model is established to simulate the impact process, which is in good agreement with the experimental results. Cone beam computed tomography (CT) is also used to detect the internal damage of honeycomb structure during impact, it is found from the detection images that the main failure modes of the structure are the failure of matrix-fiber interface and the destruction between adjacent printing paths.
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