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Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2026 / Cilt: 26 Sayı: 2

Investigation of Tensile Strengths of Kelvin and Truncated Cuboctahedron Lattice Structures Obtained from PLA Material by FDM Method

FDM Yöntemi ile PLA Malzemeden Elde Edilen Kelvin ve Truncated Cuboctahedron Kafes Yapıların Çekme Dayanımlarının Araştırılması

Cem Ertek0000-0001-5686-7664
Pages
479–488
Publication Date
2026-03-27
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Despite identical strut dimensions, differences in unit cell geometry significantly affected mechanical performance.

📌 3 Key Takeaways

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Objective & Hypothesis:Additive manufacturing transforms a digital model into a physical object by sequentially depositing layers of material.
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Key Findings & Data:According to ISO/ASTM 52900:2021, additive manufacturing methods are classified into seven categories, including Fused Deposition Modelling (FDM), which is widely used with thermoplastics such as ABS (Acrylonitrile Butadiene Styrene), PETG (Polyethylene Terephthalate Glycol), and PLA (Polylactic Acid).
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Conclusion & Impact:Despite identical strut dimensions, differences in unit cell geometry significantly affected mechanical performance.
🔬Design:Modeling & Simulation
📍Scope:2021 Verileri
⚙️Variables:Eklemeli imalat · FDM · Kafes yapı

Abstract

Additive manufacturing transforms a digital model into a physical object by sequentially depositing layers of material. According to ISO/ASTM 52900:2021, additive manufacturing methods are classified into seven categories, including Fused Deposition Modelling (FDM), which is widely used with thermoplastics such as ABS (Acrylonitrile Butadiene Styrene), PETG (Polyethylene Terephthalate Glycol), and PLA (Polylactic Acid). A key advantage of FDM is its ability to produce lattice structures with complex hollow geometries. Lattice structures are favored in applications requiring lightweight and porous designs due to their mechanical properties arising primarily from geometry rather than chemical composition. This study compares the tensile performance of Kelvin and Truncated Cuboctahedron (TC) lattice structures manufactured from PLA via FDM. Since no prior studies have directly compared these two structures under the same conditions, this work provides an original contribution. Both geometries were designed with identical strut width (0.8 mm) and length (4 mm) and integrated into standard tensile specimens according to ISO 527-2:2012, resulting in three groups: TC, Kelvin, and fully solid. Specimens were fabricated using fixed parameters: 100% infill, 0.3 mm nozzle diameter, 0.15 mm layer height, and 220 °C printing temperature. Tensile tests showed the TC structure had higher yield strength (0.87 MPa), maximum tensile strength (1.002 MPa), and elastic modulus (67.51 MPa) compared to Kelvin. ANOVA analysis confirmed these differences were statistically significant (p < 0.05). Despite identical strut dimensions, differences in unit cell geometry significantly affected mechanical performance.

Özet

Eklemeli imalat, dijital ortamda oluşturulan bir modelin katmanlı olarak üst üste malzeme eklenmesiyle fiziksel bir ürüne dönüştürülmesini sağlayan bir üretim teknolojisidir. ISO/ASTM 52900:2021 standardına göre yedi ana kategoriye ayrılan bu yöntemlerden biri olan FDM (Fused Deposition Modelling: Ergiyik Biriktirmeli Modelleme), ABS (Akrilonitril Butadien Stiren), PETG (Polietilen Tereftalat Glikol) ve PLA (Polilaktik Asit) gibi termoplastik malzemelerle yaygın olarak kullanılmaktadır. Bu yöntemin önemli avantajlarından biri, içi boş ve karmaşık geometrilere sahip kafes yapıların üretimine imkân sağlamasıdır. Kafes yapılar, kimyasal bileşimlerinden çok geometrik özellikleriyle belirlenen mekanik performansları sayesinde hafiflik, gözeneklilik ve yüksek spesifik dayanım gibi avantajlar sunar. Bu çalışmada, FDM yöntemiyle PLA kullanılarak üretilen Kelvin ve Truncated Cuboctahedron (TC) kafes yapıların çekme dayanımı karşılaştırılmış, literatürde bu iki yapının doğrudan karşılaştırıldığı bir çalışmaya rastlanmaması nedeniyle özgün bir katkı hedeflenmiştir. Her iki yapı, aynı ayrıt genişliği (0,8 mm) ve ayrıt boyu (4 mm) ile CAD ortamında tasarlanmış, ISO 527-2-2012 standardına uygun çekme numuneleriyle birleştirilerek, TC, Kelvin ve tam dolu olmak üzere üç farklı numune grubu oluşturulmuştur. Numuneler, %100 doluluk oranı, 0,3 mm nozul çapı, 0,15 mm katman kalınlığı, 220 °C baskı sıcaklığı gibi sabit parametrelerle FDM yöntemiyle imal edilmiş ve çekme testleri uygulanmıştır. Sonuçlar, TC yapının akma dayanımı (0,87 MPa), maksimum çekme dayanımı (1,002 MPa) ve elastisite modülü (67,51 MPa) bakımından Kelvin yapıya göre daha üstün olduğunu ortaya koymuştur. Yapılan ANOVA analizi ile bu farkın istatistiksel olarak anlamlı olduğu (p<0,05) belirlenmiş, ayrıt boyutları eşit olmasına rağmen birim hücre geometrisindeki farklılığın mekanik performans üzerinde belirleyici olduğu sonucuna varılmıştır.

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Cite This Article

Ertek, C. (2026). Investigation of Tensile Strengths of Kelvin and Truncated Cuboctahedron Lattice Structures Obtained from PLA Material by FDM Method. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 26 Sayı: 2, 479–488. https://doi.org/10.35414/akufemubid.1722624

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References (38)

  1. Barzgar Torghabeh, A., Barzgar Torghabeh, I., & Kafaee Razavi, M. (2024). 3D Printed PLA Porous Scaffolds with Engineered Cell Size and Porosity Promote the Effectiveness of the Kelvin Model for Bone Tissue Engineering. Macromolecular Materials and Engineering, 309(12), 2400212. https://doi.org/10.1002/mame.202400212
  2. Başçı, Ü. G., & Yamanoğlu, R. (2021). Yeni Nesil Üretim Teknolojisi: FDM ile Eklemeli İmalat. International Journal of 3D Printing Technologies and Digital Industry, 5(2), 339-352. https://doi.org/10.46519/ij3dptdi.838281
  3. Ben hadj Hassine, S., Chatti, S., Louhichi, B., & Seibi, A. (2024). Experimental study of the tensile behavior of structures obtained by FDM 3D printing process. Polymers, 16(11), 1562. https://doi.org/10.3390/polym16111562
  4. Bolat, Ç., Ergene, B., & Ispartalı, H. (2023). A comparative analysis of the effect of post production treatments and layer thickness on tensile and impact properties of additively manufactured polymers. International Polymer Processing, 38(2), 244-256. https://doi.org/10.1515/ipp-2022-4267
  5. Das, A., Chatham, C. A., Fallon, J. J., Zawaski, C. E., Gilmer, E. L., Williams, C. B., & Bortner, M. J. (2020). Current understanding and challenges in high temperature additive manufacturing of engineering thermoplastic polymers. Additive Manufacturing, 34, 101218. https://doi.org/10.1016/j.addma.2020.101218
  6. Dey, A., Roan Eagle, I. N., & Yodo, N. (2021). A review on filament materials for fused filament fabrication. Journal of manufacturing and materials processing, 5(3), 69. https://doi.org/10.3390/jmmp5030069
  7. Distefano, F., Mineo, R., & Epasto, G. (2023). Mechanical behaviour of a novel biomimetic lattice structure for bone scaffold. Journal of the Mechanical Behavior of Biomedical Materials, 138, 105656. https://doi.org/10.1016/j.jmbbm.2023.105656
  8. Erkul, Ş. N., & Uçaroğlu, S. (2023). Topraklarda Polilaktik Asitin (PLA) Biyobozunması. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, 28(1), 25-40. https://doi.org/10.17482/uumfd.1246168
  9. Eryildiz, M. (2021). The effects of infill patterns on the mechanical properties of 3D printed PLA parts fabricated by FDM. Ukrainian Journal of Mechanical Engineering and Materials Science, 7(1-2), 1-8. https://doi.org/10.23939/ujmems2021.01-02.001
  10. Gibson, I., Rosen, D., & Stucker, B. (2015). Additive Manufacturing Technologies: 3D Printing. Rapid Prototyping, and Direct Digital Manufacturing. Springer. https://doi.org/10.1007/978-1-4939-2113-3
  11. Güdür, C., Türkoğlu, T., & Eren, İ. (2023). Effect of lattice design and process parameters on the properties of PLA, ABS AND PETG polymers produced by fused deposition modelling. Journal of Materials and Mechatronics: A, 4(2), 561-570. https://doi.org/10.55546/jmm.1357217
  12. Hedayati, R., Sadighi, M., Mohammadi-Aghdam, M., & Zadpoor, A. A. (2016). Mechanical behavior of additively manufactured porous biomaterials made from truncated cuboctahedron unit cells. International Journal of Mechanical Sciences, 106, 19-38. https://doi.org/10.1016/j.ijmecsci.2015.11.033
  13. Isiani, A., Crittenden, K., Weiss, L., Odirachukwu, O., Jha, R., Johnson, O., & Abika, O. (2025). In-Situ Monitoring and Process Control in Material Extrusion Additive Manufacturing: A Comprehensive Review. Journal of Experimental and Theoretical Analyses, 3(3), 21. https://doi.org/10.3390/jeta3030021
  14. Jadhav, A., & Jadhav, V. S. (2022). A review on 3D printing: An additive manufacturing technology. Materials Today: Proceedings, 62, 2094-2099. https://doi.org/10.1016/j.matpr.2022.02.558
  15. Jain, R., & Gupta, N. (2022). Design optimization of PLA lattice in 3D printing. Materials Today: Proceedings, 59, 1577-1583. https://doi.org/10.1016/j.matpr.2022.02.186
  16. Kılınç, M., Tomar, O., & Çağlar, A. (2017). Biyobozunur gıda ambalaj malzemeleri. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, 17(3), 988-996. https://doi.org/10.5578/fmbd.66307
  17. Kothandaraman, L., & Balasubramanian, N. K. (2024). Optimization of FDM printing parameters for square lattice structures: Improving mechanical characteristics. Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2024.04.033
  18. León-Becerra, J., González-Estrada, O. A., & Quiroga, J. (2021). Effect of relative density in in-plane mechanical properties of common 3D-printed polylactic acid lattice structures. ACS omega, 6(44), 29830-29838. https://doi.org/10.1021/acsomega.1c04295
  19. Li, Y., Jiang, D., Zhao, R., Wang, X., Wang, L., & Zhang, L. C. (2024). High mechanical performance of lattice structures fabricated by additive manufacturing. Metals, 14(10), 1165. https://doi.org/10.3390/met14101165
  20. Liu, H., Gu, D., Qi, J., Zhang, H., Yuan, L., Shi, K.,. & Zhang, Y. (2023). Dimensional effect and mechanical performance of node-strengthened hybrid lattice structure fabricated by laser powder bed fusion. Virtual and Physical Prototyping, 18(1), e2240306. https://doi.org/10.1080/17452759.2023.2240306
  21. Mani, M., Murugaiyan, T., & Shanmugam, V. (2024). Mechanical characterization and puncture resistance of 3D‐printed PLA lattice structures. Polymer Engineering & Science, 64(10), 5006-5021. https://doi.org/10.1002/pen.26897
  22. Moreno-Pérez, L. C., Peña-Peña, J. F., Alcantara-Quintana, L. E., Olivares-Pinto, U., & Ruiz-Aguilar, C. (2025). Mechanical and In vitro evaluation of cell structures for bone tissue engineering. Materials Today Communications, 42, 111476. https://doi.org/10.1016/j.mtcomm.2024.111476
  23. Motgi, R., Jatti, V. K., Tamboli, S., & Dhalait, J. (2025). Lattice Structure Optimization of 3D Printed TPMS under Different Loading Conditions Using Regression Machine Learning. Mechanics of Advanced Composite Structures. https://doi.org/10.22075/macs.2025.35429.1732
  24. Nogueira, P., Lopes, P., Oliveira, L., Alves, J. L., Magrinho, J. P., Deus, A. M. D.,. & Silva, M. B. (2024). Evaluation of lattice structures for medical implants: a study on the mechanical properties of various unit cell types. Metals, 14(7), 780. https://doi.org/10.3390/met14070780
  25. Özgül, H. G., & Tatlı, O. (2021). Mechanical characterization of polylactic acid polymer 3D printed materials: the effects of infill geometry. Revista de Metalurgia 57(3). https://doi.org/10.3989/revmetalm.202
  26. Park, K. M., Min, K. S., & Roh, Y. S. (2021). Design optimization of lattice structures under compression: study of unit cell types and cell arrangements. Materials, 15(1), 97. https://doi.org/10.3390/ma15010097
  27. Prajapati, S., Sharma, J. K., Kumar, S., Pandey, S., & Pandey, M. K. (2024). A review on comparison of physical and mechanical properties of PLA, ABS, TPU, and PETG manufactured engineering components by using fused deposition modelling. Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2024.05.018
  28. Rajan, K., Samykano, M., Kadirgama, K., Harun, W. S. W., & Rahman, M. M. (2022). Fused deposition modeling: process, materials, parameters, properties, and applications. The International Journal of Advanced Manufacturing Technology, 120(3), 1531-1570. https://doi.org/10.1007/s00170-022-08860-7
  29. Silva, R. G., Estay, C. S., Pavez, G. M., Torres, M. J., & Viñuela, J. Z. (2021). Assessment of analytical relationships for mechanical properties of truncated octahedron and diamond lattice structures. Materials Today Communications, 29, 102756. https://doi.org/10.1016/j.mtcomm.2021.102756
  30. Tang, C., Liu, J., Yang, Y. A. N. G., Liu, Y., Jiang, S., & Hao, W. (2020). Effect of process parameters on mechanical properties of 3D printed PLA lattice structures. Composites Part C: Open Access, 3, 100076. https://doi.org/10.1016/j.jcomc.2020.100076
  31. Top, N. (2019). Doku mühendisliği için eklemeli imalat kullanılarak yeni bir kemik iskelesi tasarımı ve üretimi, Master Tezi, Gazi Üniversitesi. Fen Bilimleri Enstitüsü, Ankara.
  32. Turner, B. N., Strong, R., & Gold, S. A. (2014). A Review of Melt Extrusion Additive Manufacturing Processes: I. Process Design and Modeling. Rapid Prototyping Journal. 20 (3): 192–204. https://doi.org/10.1108/RPJ-01-2013-0012
  33. Tümer, E. H., & Erbil, H. Y. (2021). Extrusion-based 3D printing applications of PLA composites: A review. Coatings, 11(4), 390. https://doi.org/10.3390/coatings11040390
  34. Wang, X., Jiang, M., Zhou, Z., Gou, J., & Hui, D. (2017). 3D printing of polymer matrix composites: A review and prospective. Composites Part B: Engineering, 110, 442-458. https://doi.org/10.1016/j.compositesb.2016.11.034
  35. Wei, Y. P., Li, H. Q., Ma, Y. C., Miao, Z. Q., Yu, B., & Lin, F. (2025). Kelvin lattice structures fabricated by laser powder bed fusion: Design, preparation, and mechanical performance. China Foundry, 22(2), 117-127. https://doi.org/10.1007/s41230-025-5007-z
  36. https://www.matweb.com/search/DataSheet.aspx?MatGUID=ab96a4c0655c4018a8785ac4031b9278&ckck=1 (23.03.2025)
  37. Liu, H., Gu, D., Qi, J., Zhang, H., Yuan, L., Shi, K.,. & Zhang, Y. (2023). Dimensional effect and mechanical performance of node-strengthened hybrid lattice structure fabricated by laser powder bed fusion. Virtual and Physical Prototyping, 18(1), e2240306. https://doi.org/10.1080/17452759.2023.2240306
  38. Nogueira, P., Lopes, P., Oliveira, L., Alves, J. L., Magrinho, J. P., Deus, A. M. D.,. & Silva, M. B. (2024). Evaluation of lattice structures for medical implants: a study on the mechanical properties of various unit cell types. Metals, 14(7), 780. https://doi.org/10.3390/met14070780