Effect of Filling Pattern on the Tensile and Flexural Mechanical Properties of FDM 3D Printed Products

  • B. Akhoundi
  • A. H. BehraveshEmail author


This experimental study investigates the effect of filling pattern on tensile and flexural strength and modulus of the parts printed via fused deposition modeling (FDM), 3D printer. The main downside of the printed products, with an FDM 3D printer, is the low strength compared to the conventional processes such as injection molding and machining. The issue stems from the low strength of thermoplastic materials and the weak bonding between deposited rasters and layers. Selection of proper filling pattern and infill percentage could highly influence the final mechanical properties of the printed products that were experimentally explored in this research work. Concentric, rectilinear, hilbert curve, and honeycomb patterns and filling percentage of 20, 50 and 100 were the variable parameters to print the parts. The results indicate that concentric pattern yields the most desirable tensile and flexural tensile properties, at all filling percentages, apparently due to the alignment of deposited rasters with the loading direction. Hilbert curve pattern also yielded a dramatic increase in the properties, at 100% filling. The dramatic increase could be mainly attributed to the promotion of strong bonding between the rasters and layers, caused by maintaining a high temperature of rasters at short travelling distances of nozzle for the hilbert curve pattern. Scanning electron microscopy (SEM) examination revealed the strong bonding between rasters and sound microstructures (less flaws and voids) for concentric and hilbert curve pattern at a high filling percentage of 100. Besides, SEM examination revealed large voids in honeycomb pattern, deemed to be responsible for its lower strength and modulus, especially at the filling percentage of 100.


FDM 3D printer Fill pattern Fill percentage Mechanical properties FDM parameters 


Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.


  1. 1.
    Shaffer S, Yang K, Vargas J, Di Prima MA, Voit W (2014) On reducing anisotropy in 3D printed polymers via ionizing radiation. Polymer 55(23):5969–5979CrossRefGoogle Scholar
  2. 2.
    Guo N, Leu MC (2013) Additive manufacturing: technology, applications and research needs. Front Mech Eng 8(3):215–243CrossRefGoogle Scholar
  3. 3.
    Mostafa N, Syed HM, Igor S, Andrew G (2009) A study of melt flow analysis of an ABS-iron composite in fused deposition modelling process. Tsinghua Sci Technol 14:29–37CrossRefGoogle Scholar
  4. 4.
    Goyanes A, Buanz AB, Basit AW, Gaisford S (2014) Fused-filament 3D printing (3DP) for fabrication of tablets. Int J Pharm 476(1):88–92CrossRefGoogle Scholar
  5. 5.
    Mannoor MS, Jiang Z, James T, Kong YL, Malatesta KA, Soboyejo WO, Verma N, Gracias DH, McAlpine MC (2013) 3D printed bionic ears. Nano Lett 13(6):2634–2639CrossRefGoogle Scholar
  6. 6.
    Li D, Feng X, Liao P, Ni H, Zhou Y, Huang M, Li Z, Zhu Y (2014) 3D reverse modeling and rapid prototyping of complete denture. Frontier and Future Development of Information Technology in Medicine and Education. Springer: 1919–1927Google Scholar
  7. 7.
    Hudson SE (2014) Printing teddy bears: a technique for 3D printing of soft interactive objects. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM, pp 459–468Google Scholar
  8. 8.
    Serizawa R, Shitara M, Gong J, Makino M, Kabir MH, Furukawa H (2014) 3D jet printer of edible gels for food creation. Proceedings of SPIE Smart Structures and Materials Nondestructive Evaluation and Health Monitoring:90580A-90580AGoogle Scholar
  9. 9.
    Akhoundi B, Behravesh AH, Bagheri Saed A (2018) Improving mechanical properties of continuous fiber-reinforced thermoplastic composites produced by FDM 3D printer. J Reinf Plast Compos.
  10. 10.
    Bellehumeur C, Li L, Sun Q, Gu P (2004) Modeling of bond formation between polymer filaments in the fused deposition modeling process. J Manuf Process 6(2):170–178CrossRefGoogle Scholar
  11. 11.
    Sun Q, Rizvi G, Bellehumeur C, Gu P (2008) Effect of processing conditions on the bonding quality of FDM polymer filaments. Rapid Prototyp J 14(2):72–80CrossRefGoogle Scholar
  12. 12.
    Ahn S-H, Montero M, Odell D, Roundy S, Wright PK (2002) Anisotropic material properties of fused deposition modeling ABS. Rapid Prototyp J 8(4):248–257CrossRefGoogle Scholar
  13. 13.
    Panda SK, Padhee S, Anoop Kumar S, Mahapatra S (2009) Optimization of fused deposition modelling (FDM) process parameters using bacterial foraging technique. Intell Inf Manag 1(02):89Google Scholar
  14. 14.
    Rayegani F, Onwubolu G (2014) Fused deposition modelling (FDM) process parameter prediction and optimization using group method for data handling (GMDH) and differential evolution (DE). Int J Adv Manuf Technol 73Google Scholar
  15. 15.
    Tymrak B, Kreiger M, Pearce JM (2014) Mechanical properties of components fabricated with open-source 3-D printers under realistic environmental conditions. Mater Des 58:242–246CrossRefGoogle Scholar
  16. 16.
    Melenka GW, Schofield JS, Dawson MR, Carey JP (2015) Evaluation of dimensional accuracy and material properties of the MakerBot 3D desktop printer. Rapid Prototyp J 21(5):618–627CrossRefGoogle Scholar
  17. 17.
    Torres J, Cotelo J, Karl J, Gordon AP (2015) Mechanical property optimization of FDM PLA in shear with multiple objectives. Jom 67(5):1183–1193CrossRefGoogle Scholar
  18. 18.
    Baich L, Manogharan G, Marie H (2015) Study of infill print design on production cost-time of 3D printed ABS parts. Int J Rapid Manuf 5(3–4):308–319CrossRefGoogle Scholar
  19. 19.
    Fernandez-Vicente M, Calle W, Ferrandiz S, Conejero A (2016) Effect of infill parameters on tensile mechanical behavior in desktop 3D printing. 3D Print Add Manufact 3(3):183–192CrossRefGoogle Scholar
  20. 20.
    Dawoud M, Taha I, Ebeid SJ (2016) Mechanical behaviour of ABS: an experimental study using FDM and injection moulding techniques. J Manuf Process 21:39–45CrossRefGoogle Scholar
  21. 21.
    Wang J, Xie H, Weng Z, Senthil T, Wu L (2016) A novel approach to improve mechanical properties of parts fabricated by fused deposition modeling. Mater Des 105:152–159CrossRefGoogle Scholar
  22. 22.
    Mohamed OA, Masood SH, Bhowmik JL (2017) Experimental investigation of time-dependent mechanical properties of PC-ABS prototypes processed by FDM additive manufacturing process. Mater Lett 193:58–62CrossRefGoogle Scholar
  23. 23.
    Holman JP (2001) Heat transfer, eighth SI metric edition. Mc Gran–Hill Book CompanyGoogle Scholar
  24. 24.
    Farah S, Anderson DG, Langer R (2016) Physical and mechanical properties of PLA, and their functions in widespread applications—a comprehensive review. Adv Drug Deliv Rev 107:367–392CrossRefGoogle Scholar

Copyright information

© Society for Experimental Mechanics 2019

Authors and Affiliations

  1. 1.Additive Manufacturing Laboratory, Faculty of Mechanical EngineeringTarbiat Modares UniversityTehranIran

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