Abstract
Material extrusion (MEX), frequently known as fused filament fabrication (FFF), is a material extrusion 3D printing process for fabricating cost-effectively functional polymeric parts. Even if the MEX process fabricates fully dense or lightweight specimens with a relatively complex geometry in a reduced time and cost, it presents some drawbacks in shape accuracy, surface roughness, and anisotropic mechanical response. Herewith, the interaction between material design, 3D printing, and laser post-processing is investigated for efficient printable nanocomposite materials. Polylactic acid (PLA)/carbon black (CB) nanocomposites were prepared with a thermomechanical process and characterized for their mechanical and electrical properties. Then, they were processed with a low-cost CO2 laser, to assess their behavior in the process. Critical geometrical characteristics were measured, and results were analyzed with statistical modeling, to optimize the process and evaluate the effect of the laser cutting parameters on the quality of the samples. This paper points out new data on low-cost CO2 laser cutting of MEX thin plates fabricated using PLA/CB nanocomposite filament and an affordable material extrusion MEX 3D printing process. The data produced are helpful for the improvement of the shape accuracy and surface roughness of parts and components used in nanocomposite-based innovative assemblies and systems.
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Abbreviations
- 3DP:
-
3D printing
- ABS:
-
Acrylonitrile butadiene styrene
- AM:
-
Additive manufacturing
- ANN:
-
Artificial neural networks
- ANOVA:
-
Analysis of variances
- CA:
-
Cutting angle (degrees)
- CB:
-
Carbon black
- CCW:
-
Counterclockwise
- CS:
-
Cutting speed (mm/s)
- CW:
-
Clockwise
- DMA:
-
Dynamic mechanical analysis
- DOE:
-
Design of experiment
- E:
-
Tensile modulus of elasticity (MPa)
- FDM :
-
Fused deposition modeling
- FFF:
-
Fused filament fabrication
- FSW:
-
Friction stir welding
- HAM:
-
Hybrid additive manufacturing
- HAZ:
-
Heat affected zone
- Kd:
-
Kerf down width (mm)
- Km:
-
Kerf median width (mm)
- Ku:
-
Kerf upper width (mm)
- LP:
-
Laser power (W)
- MEP:
-
Main effect plot
- MEX:
-
Material extrusion
- MRR:
-
Material removal rate
- NN:
-
Neural network
- NT:
-
Nozzle temperature (°C)
- PET-G:
-
Polyethylene terephthalate glycol
- PLA:
-
Polylactic acid
- PMMA:
-
Polymethyl methacrylate
- PP:
-
Polypropylene
- Ra:
-
Average surface roughness: average profile height deviations from the mean line (μm)
- Rt:
-
Total height of the roughness profile (μm)
- SEM:
-
Scanning electron microscopy
- SoD:
-
Stand-off distance (mm)
- TEM mode:
-
Transverse electromagnetic mode
- Tg:
-
Glass transition temperature (°C)
- TGA:
-
Thermogravimetric analysis
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Acknowledgements
The authors would like to thank Aleka Manousaki from the Institute of Electronic Structure and Laser of the Foundation for Research and Technology, Hellas (IESL-FORTH), for taking the SEM images presented in this work.
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John D. Kechagias: conceptualization, methodology, resources, supervision, project administration, process optimization; Nectarios Vidakis: methodology, visualization, resources; Konstantinos Ninikas: software, formal analysis, investigation, data curation; Markos Petousis: methodology, formal analysis; Nikolaos Vaxevanidis: investigation, data curation, statistical modeling; the manuscript was written through contributions of all authors. All authors have approved the final version of the manuscript.
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Kechagias, J.D., Vidakis, N., Ninikas, K. et al. Hybrid 3D printing of multifunctional polylactic acid/carbon black nanocomposites made with material extrusion and post-processed with CO2 laser cutting. Int J Adv Manuf Technol 124, 1843–1861 (2023). https://doi.org/10.1007/s00170-022-10604-6
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DOI: https://doi.org/10.1007/s00170-022-10604-6