Abstract
The aim of this study is to conduct processing and fatigue analysis on components made from short carbon fiber-reinforced Polyethylene Terephthalate Glycol (SCF-PETG) using the Material Extrusion (MEX) method. For this study, commercially available SCF-PETG filament and filament developed in the laboratory with different carbon fiber weight percentages are studied under constant stress conditions to verify the effect of parametric conditions, i.e., type of laminates (unidirectional, angle-ply, and cross-ply), layer heights (0.3, 0.2, 0.1, and 0.05 mm), and carbon fiber weight percentages (13.78%, 10% and 16%). The Kruskal–Wallis test is performed to analyze the experimental data. It was observed that fatigue life is greatly affected by varying process parameters. The S–N curve is also obtained by testing specimens at four stress levels with optimized printing parameters. An optical microscope was used to study fiber orientation and fiber length for the filament which is extruded in the laboratory. After fatigue testing, scanning electron microscopy (SEM) is performed to observe the microstructure of the specimens fractured under fatigue loading. The findings of this study could prove to be highly beneficial in the production of fiber-reinforced composites that exhibit enhanced overall properties suitable for application in the automotive, aerospace, and robotics field.
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Acknowledgements
The authors want to thank Mr. Giovanni Mainardi and Wayne Hawkins at Tennessee Tech University, for their assistance in the experiments.
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This research has been funded by the Center for Manufacturing Research and the Department of Mechanical Engineering. The authors appreciate the provided funding.
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All four authors contributed to various portions of the research project equally. Methodology, experimentation, and analysis were mostly done by Mithila Rajeshirke. The initial draft was written by Mithila Rajeshirke; revised, and finalised by Ismail Fidan, Orkhan Huseynov, and Suhas Alkunte. All the authors read and approved the final manuscript. The entire research project was managed by Ismail Fidan.
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Rajeshirke, M., Alkunte, S., Huseynov, O. et al. Fatigue analysis of additively manufactured short carbon fiber-reinforced PETG Components. Int J Adv Manuf Technol 128, 2377–2394 (2023). https://doi.org/10.1007/s00170-023-12107-4
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DOI: https://doi.org/10.1007/s00170-023-12107-4