Journal
MATERIALS LETTERS
Volume 317, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2022.132077
Keywords
3D printing; Composite materials; Honeycomb structure; Cyclic compression; Self-sensing
Funding
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX2021013]
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In this study, a PLA/TPU filament for 3D printing was prepared and a continuous carbon fiber-reinforced honeycomb structure was fabricated using a continuous fiber 3D printer. The structure demonstrated self-sensing performance during cyclic compression and could monitor temperature changes through electrical resistance.
Polylactic acid/thermoplastic polyurethanes (PLA/TPU) filament for 3D printing was prepared by screw extruder, and continuous carbon fiber-reinforced PLA/TPU honeycomb structure was fabricated by continuous fiber 3D printer, and the self-sensing performance of the structure during cyclic compression was investigated. The results show that the strain and damage can be sensed by the change of electrical resistance in the hon-eycomb structure during cyclic compression at small-strain (epsilon = 0.04) and large-strain (epsilon = 0.4). Meanwhile, the temperature monitoring of the honeycomb structure can be realized by the change of electrical resistance in the honeycomb structure. This study provides the possibility for developing and applying 3D printed continuous carbon fiber composite smart structures and structural health monitoring.
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