Optimizing Surface Finish and Dimensional Accuracy in 3D Printed Free-Form Objects
Main Article Content
Keywords
3D printing, free-form model, response surface method, surface quality, dimensional accuracy
Abstract
3D printing of free-form objects presents inherent complexity due to their organic and intricate shapes. Designers engage with such objects, considering a range of factors including aesthetics, engineering viability, and ergonomic comfort. This research is focused on achieving the most effective printing parameters for a free-form object utilizing the Digital Light Processing (DLP) technique within a 3D printer. Within this study, a squeezed hexagonal tube-shaped CAD model was employed as an experimental subject, following the principles of the Response Surface Method (RSM). The research delved into the optimization of printing parameters, particularly layer thickness and exposure time, to enhance the dimensional accuracy and surface quality of the free-form model. Two levels were established for each factor: layer thickness was set at 0.06 mm (low) and 0.08 mm (high), while exposure time was tested at 6 s (low) and 8 s (high). The assessment of surface quality involved a qualitative evaluation employing a digital microscope to identify potential defects and imperfections in the print outcomes. The investigation culminated in the identification of the optimal printing parameters: a layer thickness of 0.0753 mm and an exposure time of 7.2143 seconds. This achievement not only enhances the understanding of 3D printing variables in the context of intricate free-form models but also contributes to the broader field of additive manufacturing parameter optimization.
References
[2] J. S. Lee, N. Kwon, N. H. Ham, J. J. Kim, and Y. H. Ahn, “BIM-Based Digital Fabrication Process for a Free-Form Building Project in South Korea,” Adv. Civ. Eng., vol. 2019, no. Vdc, 2019, doi: 10.1155/2019/4163625.
[3] A. Su and S. J. Al Aref, Chapter 1 - History of 3D Printing. Elsevier Inc., 2018.
[4] P. Tack, J. Victor, P. Gemmel, and L. Annemans, “3D ‑ printing techniques in a medical setting : a systematic literature review,” Biomed. Eng. Online, vol. 15, no. 115, pp. 1–21, 2016, doi: 10.1186/s12938-016-0236-4.
[5] N. Paunović et al., “Digital light 3D printing of customized bioresorbable airway stents with elastomeric properties,” Sci. Adv., vol. 7, no. February, pp. 1–13, 2021.
[6] H. Ramazani and A. Kami, “Metal FDM, a new extrusion-based additive manufacturing technology for manufacturing of metallic parts: a review,” Prog. Addit. Manuf., vol. 7, no. 4, pp. 609–626, 2022, doi: 10.1007/s40964-021-00250-x.
[7] M. Pagac et al., “A Review of Vat Photopolymerization Technology : Materials,” Polymers (Basel)., vol. 13, no. 13, p. 598, 2021.
[8] A. Davoudinejad et al., “Additive manufacturing with vat polymerization method for precision polymer micro components production,” Procedia CIRP, vol. 75, pp. 98–102, 2018, doi: 10.1016/j.procir.2018.04.049.
[9] M. Keller, A. Guebeli, F. Thieringer, and P. Honigmann, “In-hospital professional production of patient-specific 3D-printed devices for hand and wrist rehabilitation,” Hand Surg. Rehabil., vol. 40, no. 2, pp. 126–133, 2021, doi: 10.1016/j.hansur.2020.10.016.
[10] W. Li, L. S. Mille, J. A. Robledo, T. Uribe, V. Huerta, and Y. S. Zhang, “Recent Advances in Formulating and Processing Biomaterial Inks for Vat Polymerization-Based 3D Printing,” Adv. Healthc. Mater., vol. 9, no. 15, pp. 1–18, 2020, doi: 10.1002/adhm.202000156.
[11] H. Quan, T. Zhang, H. Xu, S. Luo, J. Nie, and X. Zhu, “Photo-curing 3D printing technique and its challenges,” Bioact. Mater., vol. 5, no. 1, pp. 110–115, 2020, doi: 10.1016/j.bioactmat.2019.12.003.
[12] I. Gibson, D. W. Rosen, and B. Stucker, “Direct Digital Manufacturing,” in Additive Manufacturing Technologies, Springer, 2021, pp. 525–554.
[13] A. J. Guerra et al., “Optimization of photocrosslinkable resin components and 3D printing process parameters,” Acta Biomater., vol. 97, pp. 154–161, 2019, doi: 10.1016/j.actbio.2019.07.045.
[14] Y. Zang and P. Qiu, “Phase II monitoring of free-form surfaces : An application to 3D printing,” J. Qual. Technol., vol. 50, no. 4, pp. 379–390, 2018, doi: 10.1080/00224065.2018.1508274.
[15] S. A. Irvine, A. Agrawal, and B. H. Lee, “Printing cell-laden gelatin constructs by free-form fabrication and enzymatic protein crosslinking,” Biomed Microdevices, vol. 17, no. 16, pp. 1–8, 2015, doi: 10.1007/s10544-014-9915-8.
[16] E. Van Den Berg, W. F. Bronsvoort, and J. S. M. Vergeest, “Freeform feature modelling: Concepts and prospects,” Comput. Ind., vol. 49, no. 2, pp. 217–233, 2002, doi: 10.1016/S0166-3615(02)00080-5.
[17] P. Herholz, “Approximating Free-form Geometry with Height Fields for Manufacturing,” vol. 34, no. 2, 2015, doi: 10.1111/cgf.12556.
[18] J. G. Zhou, D. Herscovici, and C. C. Chen, “Parametric process optimization to improve the accuracy of rapid prototyped stereolithography parts,” Int. J. Mach. Tools Manuf., vol. 40, no. 3, pp. 363–379, 2000, doi: 10.1016/S0890-6955(99)00068-1.
[19] S. Rahmati and F. Ghadami, “Process Parameters Optimization to Improve Dimensional Accuracy of Stereolithography Parts,” Int. J. Adv. Des. Manuf. Technol., vol. 7, no. 1, pp. 59–65, 2014.
[20] A. Ibrahim, N. Sa’ude, and M. Ibrahim, “Optimization of Process Parameter for Digital Light Processing ( DLP ) 3D Printing,” in Proceedings of Academics World 62nd International Conference, 2017, no. April, pp. 19–22.
[21] V. Bertana et al., “3D printing with the commercial UV-curable standard blend resin: Optimized process parameters towards the fabrication of tiny functional parts,” Polymers (Basel)., vol. 11, no. 2, 2019, doi: 10.3390/polym11020292.
[22] E. Mathew, G. Pitzanti, A. L. Gomes, and D. A. Lamprou, “Optimization of Printing Parameters for Digital Light Processing 3D Printing of Hollow Microneedle Arrays,” Pharmaceutics, vol. 13, no. 1837, pp. 1–14, 2021.
[23] C. Arnold, D. Monsees, J. Hey, and R. Schweyen, “Surface quality of 3D-printed models as a function of various printing parameters,” Materials (Basel)., vol. 12, no. 12, pp. 1–15, 2019, doi: 10.3390/ma12121970.
[24] D. C. Montgomery, Design and Analysis of Experiments, 9th ed. Wiley, 2017.
[25] W. Piedra-Cascón, V. R. Krishnamurthy, W. Att, and M. Revilla-León, “3D printing parameters, supporting structures, slicing, and post-processing procedures of vat-polymerization additive manufacturing technologies: A narrative review,” J. Dent., vol. 109, no. March, 2021, doi: 10.1016/j.jdent.2021.103630.
[26] J. L. Saorin, M. D. Diaz-Alemán, J. De La Torre-Cantero, C. Meier, and I. Pérez Conesa, “Design and validation of an open source 3D printer based on digital ultraviolet light processing (DLP), for the improvement of traditional artistic casting techniques for microsculptures,” Appl. Sci., vol. 11, no. 7, 2021, doi: 10.3390/app11073197.
[27] T. D. Dikova, D. A. Dzhendov, D. Ivanov, and K. Bliznakova, “Dimensional accuracy and surface roughness of polymeric dental bridges produced by different 3D printing processes,” Arch. Mater. Sci. Eng., vol. 94, no. 2, pp. 65–75, 2018, doi: 10.5604/01.3001.0012.8660.
[28] N. N. Kumbhar and A. V. Mulay, “Post Processing Methods used to Improve Surface Finish of Products which are Manufactured by Additive Manufacturing Technologies: A Review,” J. Inst. Eng. Ser. C, vol. 99, no. 4, pp. 481–487, 2018, doi: 10.1007/s40032-016-0340-z.
[29] S. Barone, V. Armando, and V. Razionale, “ScienceDirect ScienceDirect Development 3D printer printer for for orthodontic orthodontic applications applications Development of of a a DLP DLP 3D,” Procedia Manuf., vol. 38, no. 2019, pp. 1017–1025, 2020, doi: 10.1016/j.promfg.2020.01.187.
[30] Z. chen Zhang, P. lun Li, F. ting Chu, and G. Shen, “Influence of the three-dimensional printing technique and printing layer thickness on model accuracy,” J. Orofac. Orthop., vol. 80, no. 4, pp. 194–204, 2019, doi: 10.1007/s00056-019-00180-y.
[31] C. S. Favero, J. D. English, B. E. Cozad, J. O. Wirthlin, M. M. Short, and F. K. Kasper, “Effect of print layer height and printer type on the accuracy of 3-dimensional printed orthodontic models,” Am. J. Orthod. Dentofac. Orthop., vol. 152, no. 4, pp. 557–565, 2017, doi: 10.1016/j.ajodo.2017.06.012.
[32] V. Papadopoulou et al., “3D Printed Smart Luminous Artifacts BT - Progress in Digital and Physical Manufacturing,” 2023, pp. 339–345.
[33] M. Attaran, “The rise of 3-D printing: The advantages of additive manufacturing over traditional manufacturing,” Bus. Horiz., vol. 60, no. 5, pp. 677–688, 2017, doi: https://doi.org/10.1016/j.bushor.2017.05.011.