Investigation on Mechanical Properties of Bio-PETG Filament in FDM 3D Printing

Abstract:

This study explores the mechanical behavior and performance characteristics of Bio-PETG (Bio-based Polyethylene Terephthalate Glycol) filament processed through Fused Deposition Modeling (FDM) 3D printing. Known for its thermal moldability and high strength, PETG has gained popularity in both additive manufacturing and biomedical applications, particularly in orthopedic implants. The investigation focuses on evaluating the effect of varying infill densities—60%, 80%, and 100%—on key mechanical properties, including flexural strength, compressive strength, impact resistance, and hardness. Test specimens were produced using a Creality Ender-3 FDM printer and assessed in accordance with ASTM standards. Experimental results revealed that specimens with 100% infill density exhibited the highest mechanical strength, achieving flexural and compressive strengths of 62.922 MPa and 47.412 MPa, respectively. Interestingly, samples with 60% infill maintained a reasonable load-bearing capacity while offering advantages in material efficiency and reduced print time. These findings underscore the suitability of Bio-PETG for functional components and emphasize the importance of optimizing infill parameters to achieve a balance between performance and resource utilization.

• Periodical: Key Engineering Materials (Volume 1037)
• Pages: 173-181
• DOI: https://doi.org/10.4028/p-3Ozezg
• Online since: January 2026
• Authors: V. P. Pradeep*, Ashok Kumar Palaniappan, R. Karthikeyan, Kumar G. Aravind, M. Vignesh
• Keywords: Additive Manufacturing, Bio-PETG, FDM 3D Printing, Infill Density

References

[1] Ahmad, M.N., Ishak, M.R., & Hannah, M.Z. (2024). "The effect of FDM parameters on the mechanical properties of PLA printed parts". Journal of Advanced Research in Applied Mechanics, 123(1), 238–246.

DOI: 10.37934/aram.123.1.238246

[2] Zhao, Y., Zhao, K., Li, Y., & Chen, F. (2020). "Mechanical characterization of biocompatible PEEK by FDM". Journal of Manufacturing Processes, 56, 28–42.

DOI: 10.1016/j.jmapro.2020.04.063

[3] Birosz, M.T., Ledenyak, D., & Ando, M. (2022). "Effect of FDM infill patterns on mechanical properties". Polymer Testing, 113, 107654.

DOI: 10.1016/j.polymertesting.2022.107654

[4] Srinivasan, D., Meignanamoorthy, M., Ravichandran, M., Mohanavel, V., Alagarsamy, S.V., Chanakyan, C., Sakthivelu, S., Karthick, A., Prabhu, T.R., & Rajkumar, S. (2021). "3D printing manufacturing techniques, materials, and applications: An overview". Advances in Materials Science and Engineering, 2021, 5756563.

DOI: 10.1155/2021/5756563

[5] Zhan, J., Tamura, T., Li, X., Ma, Z., Sone, M., Yoshino, M., Umezu, S., & Sato, H. (2020). "Metal-plastic hybrid 3D printing using catalyst-loaded filament and electroless plating". Additive Manufacturing, 36, 101556.

DOI: 10.1016/j.addma.2020.101556

[6] Karthikeyan, R., Pradeep, V.P., Rajkumar, S., & Gobinath, K. (2024). "Effect of Combined Internal Structure on Mechanical Properties of FDM 3D Printed Parts". Materials Science Forum, 1120, 61–67.

DOI: 10.4028/p-wgqyy2

[7] Alafaghani, A., & Qattawi, A. (2018). "Investigating the effect of fused deposition modeling processing parameters using Taguchi design of experiment method". Journal of Manufacturing Processes, 36, 164–174.

DOI: 10.1016/j.jmapro.2018.09.025

[8] Ahmad, M.N., & Yahya, A. (2023). "Effects of 3D Printing Parameters on Mechanical Properties of ABS Samples". Designs, 7(6), 136.

DOI: 10.3390/designs7060136

[9] Rodríguez-Panes, A., Claver, J., & Camacho, A.M. (2018). "The influence of manufacturing parameters on the mechanical behaviour of PLA and ABS pieces manufactured by FDM: A comparative analysis". Materials, 11(8), 1333.

DOI: 10.3390/ma11081333

[10] Zindani, D., & Kumar, K. (2019). "An insight into additive manufacturing of fiber reinforced polymer composite". International Journal of Lightweight Materials and Manufacture, 2(4), 267–278.

DOI: 10.1016/j.ijlmm.2019.08.004

[11] Roy, R., & Mukhopadhyay, A. (2021). "Printing parameters and materials affecting mechanical properties of FDM printed parts: A review". Materials Today: Proceedings, 46, 1576–1580. ScienceDirect.

[12] Kartal, F., & Kaptan, A. (2024). "Effect of Filling Ratio-Pattern Parameters on Mechanical Properties of PLA Filaments Used in 3D Printing". Bilecik Şeyh Edebali University Journal of Science and Engineering, 10(1), 196–202. Home.

DOI: 10.34248/bsengineering.1388610

[13] 3. Ambade, V. V., Padole, V., & Badole, B. (2023). "Effect of infill density, infill pattern, and extrusion temperature on mechanical properties of parts produced by 3D printing FDM technology using ABS, PLA, and PETG filament: A critical review". International Journal of Research and Analytical Reviews, 10(1), 130–140.