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Additive Manufacturing Technologies

Advanced manufacturing and additive printing technologies have made incredible inroads into the fields of engineering, transportation, and healthcare. Among additive manufacturing technologies, 3D printing is gradually emerging as a powerful technique owing to a combination of attractive features, such as fast prototyping, fabrication of complex designs/structures, minimization of waste generation, and easy mass customization. 

  • additive manufacturing
  • advanced printing
  • 3D printing
  • 4D printing

1. Introduction

Additive manufacturing (AM), often referred to as rapid prototyping or 3D printing in the scientific literature, has evolved as a popular manufacturing technology since the 1980s [1]. In 1986, Chuck Hull recommended the fabrication of three-dimensional (3D) systems via a technology called stereolithography (SLA), which engrossed researchers’ attention and subsequently gave birth to AM technology, also known as 3D printing (or 3DP) [2][3]. Since then, 3D printing has been creating a sound reputation in all of manufacturing, although microstructures fabricated using 3D printing are primarily static in nature [4]. Three-dimensional printing is being widely used in polymer science and technology, space, nuclear, energy storage, biomedicine, and other fields owing to the rapid prototyping capability of 3D products even for complex designs/shapes [5][6][7][8][9]. In the manufacturing sector, 3D printing is mostly used for fabricating complex 3D objects and components of new products in the early stages of development. [10]. Although endowed with many advantageous features, one of the challenges remain in the layer-by-layer printing speed [11] and, precisely because of this reason, 3D printing has not been able to substitute traditional manufacturing methods completely or at least to a significant extent [2].

It was evident that the 3D microstructures manufactured out of smart materials, depending mostly on the functional properties of these materials, can change over time in a prearranged way. This has given birth to a new printing technology by Professor Tibbits in 2013 and introduced to the world as “4D printing” [12]. Four-dimensional printing (or 4DP) was first described with the formula of “4D printing = 3D printing + time”, which denotes the changes in the function, structure, or shape, of 3D printed objects over time [2][13]. This next generation printing uses smart materials with special properties and sophisticated programmable designs to prompt the 3D printed part to change its shape [14]. Given the ongoing development in the AM research and development, the description of 4D printing is expected to become more comprehensive [15][16]. Three-dimensional printing is a predesigned printing of a finished object, whereas 4D printing is the preprogrammed design of a 3D preprinted product into a flexible smart material, tailored with specific properties. The characteristic differences between 3D and 4D printing have been outlined in Table 1 [17].

Table 1. Characteristic distinctions between 3D and 4D printing techniques.

3DP 4DP Compared Characteristics
Structure formed using layer-by-layer deposition of 2D ink material One more step of advancement of 3D printing with shape-changing programming property Manufacturing approach
Metals, ceramics, thermoplastics, nano-, and biomaterials, Smart materials Printable materials
No programming step involved Thermomechanical preparation, multimaterial printing to create differential thermal and mechanical stresses Shape-memory programming
Forms rigid structure Characteristics of structure flexibility change upon exposure of external energy stimulus Shape flexibility
Engineering, electronics, medicine, dentistry, automotive, robotics, fashion, aerospace, defense, and nuclear etc. Adds dynamic element(s) to all 3D printing applications, mostly employed in biomedical industries Area of applications

Compared to 3D printings, 4D printing has many advantages including material flexibility, which enables the exact configuration of material sensitivity with external energy stimuli [18]. Four-dimensional printing can print many 3D parts and objects that 3D printing can’t [19] The color [20], volume [21], and shape [22] of these printed objects can grow or shrink with environmental conditions and stimuli, such as light, water, air and temperature [12]. Four-dimensional printing has been applied to many fields successfully, such as bioprinting where printed biostructures can alter the material functionalities [23].

2. Advanced Printing Strategies

Recent 3D printing growth and expansion have not only focused on the refining of the quality of printed objects but also on the size of yields, initiating an entire spectrum of new opportunities for the printing technology. Three-dimensional printing is becoming a stirring technology: from merely being a means of rapid prototyping to an economically feasible option for mass production of materials by the development of printing competences, in both the size and complexity of end products.

There are three main stages in 3D printing process. The first step is the groundwork just before actual printing, when a 3D CAD file of the object is created. In the next step, the material with required specific properties is chosen, and then the actual printing starts. The printing materials include metals, polymers, ceramics, resins, sand, glass, textiles, biomaterials, and even food. Most of these materials allow adequate allowances to attain precise control over the printed objects. However, some materials, for instance glass, are not easily amenable to precise control of fabrication parameters yet and as a result intense research and development activities are still being pursued to achieve desire control during printing [24]. The final stage is the finishing step which requires the matching of specific instrumentation skills with that of the properties of the functional materials. Once an object is first printed, mostly it cannot be ready to use until it has been cured, lacquered, sanded, or painted to finish it as envisioned. Various techniques of a typical AM processes, used for printing polymeric, metallic and ceramic components.

In addition to some of the advantages of 3D printing, such as production speed, flexibility in design and cost factors, there lies a number of challenges too. These include energy-intensive nature of the printing process, problems associated with mass manufacturing of products, and limited availability of ink material for printing. However, for small production runs, and prototyping, a 3D printer is often a massively better manufacturing option than the conventional ones.

Figure 1 describes how a 3D printing technique can be transformed to its next higher version (4D).
Figure 1. A simplified illustration of the concept of 4D printing.
As the Figure 1 suggests, 4D printing can be envisioned as an advanced printing method where a 3D printed structure alters itself (as shown in Figure 1 with light activation) into a different object with the effect of external energy input, such as heat, light or other available environmental stimuli [25][26][27][28]. Four-dimensional printing is programmed to alter a 3D printed structure, in terms of its shape, property, and functionality [29][30][31][32][33][34]. It is endowed with properties, such as self-assembly, self-repairability, and multifunctionality. It is time-dependent and foreseeable, but independent of the selection of ingredients and choice of the printer. Such an evolutionary characteristic depends mainly on the choice of appropriate smart functional materials in the 3D space. There are at least two stable conditions in a 4D printed objects, and the structure can change from one state to another under the influence of appropriate stimulus. Four-dimensional printing demonstrates several benefits over 3D printing in quite a few aspects [35].

Presently, fused deposition modelling (FDM); stereolithographic apparatus (SLA); selective laser sintering (SLS); and polyjet AM technologies are in use in 4D printing [17]. A 4D printed object can be thought of as an offspring from the marriage between smart material and a 3D printer. It can be developed by exposure to external stimulus through a direct or indirect interaction mechanism, and sometimes mathematical modeling is required for the design of the distribution of multiple materials in the structure [36]. A 4D printing set up is shown in Figure 2 a along with the concept of fabricating a 4D structure with internal gaps ( Figure 2 b–d).

Figure 2. (a) Schematic diagram of a 4DP system. It is showing that a nozzle is secured on a z stage, and a vessel of carboxymethyl cellulose aq (CMC aq) is secured on xy stages. By stirring the xyz stages, the pre-gel ink is deposited through the nozzle into CMC aq using a syringe pump. Concept for printing 4D object with internal gaps. (b) Pre-gel monomer ink is deposited into auxiliary viscous liquid to print a 3D ink design. (c) The written ink is subjected to UV light and is polymerized to acquire a 3D hydrogel assembly. (d) Afterward substituting the auxiliary liquid into water, the polymerized 3D hydrogel assembly collapses in reaction to UV light. Reprinted with permission from reference [37], Copyright 2020 by the authors and license MDPI, Basel, Switzerland.

3. Applications and Trends

Until lately, 3D printing was used mostly for prototyping reasons in the footwear and food industries. However, conventional market players together with emerging startups have started investing in AM technologies in recent years. The promising outcomes have been 3D printing of nanocomposites for various electrical and electronics applications. Wei et al. [38] confirmed that, a graphene reinforced acrylonitrile-butadiene-styrene (ABS) composite could be fused deposition modelling (FDM) printed into computer-designed models ( Figure 3 ) and improved electrical conductivity was detected.

Figure 3. Photograph of (a) graphite flakes; (b,c) dispersions of graphene oxide(GO) and ABS in N-methylpyrolidone (NMP) solvent; (d,e) a homogeneous mixture of GO-ABS in NMP before and after chemical reduction; (f) graphene(G)-ABS clots found after isolation (e) with water; (g) G-ABS composite powder after washing and drying; (h) schematic illustration of fused deposition modeling 3DP, the inset shows the graphene-based filament winding on a roller; (i) a typical 3D printed model consuming 3.8 wt% G-ABS composite filament, scale bar: 1 cm. Reprinted with permission from reference [38], Copyright 2015, Nature.
Three-dimensional printing also holds the potential to unscramble limitations in existing biomedical industries. It can be expanded to rapidly manufacture personalized tissue engineering scaffolds, in situ restoration of damaged tissues within cells, and even straightway print tissue and organs. Recently, Wang et al. [39] have reported, a hybrid hierarchical polyurethane (PU)–cell/hydrogel construct that was automatically shaped exploiting an extrusion-based double-nozzle and low-temperature 3D printer (Figure 4a–g).
Figure 4. A sizable scaled-up 3DP-driven complex organ with vascularized liver tissue construct using a double-nozzle 3PD set-up built in Tsinghua University, Prof. Wang’s laboratory. Representation of the hybrid hierarchical construct fabricated via a DLDM RP system: (a) a digital CAD model with an outlook (the inset image) and an internal branched network; (b) a common layer interface (CLI) file and a cross-sectional vision (the inset image) of the CAD model; (c) a DLDM product with a PU outcoat; the inset image displays the SEM result of the in vitro cultured sample with porous PU and cell/hydrogel layers; (d) the middle part of (c) with branched/grid internal cell/hydrogel channels; the inset image displays the PI staining result of the cell/hydrogel section; (e) two complex constructs undergoing in vitro pulsatile culture; (f) a magnified view of (e); (g) the DLDM RP device and a schematic design of the printing processes; cells were loaded in the natural gelatin/alginate/fibrinogen hydrogel and deposited with one nozzle while synthetic PU was added with another nozzle. Images reproduced with permission from reference [40], Copyright 2013, with permission from Elsevier.
There are two general trends that are expected to reshape the future of the AM technology: (1) switching from rapid prototyping to rapid manufacturing and (2) the option to enable mass customization of end-products using 3DP.

As has already been explained, 4D printing, being an upcoming advanced version of the existing 3DP technology, is well poised to help accelerate growth in many research and industrial sectors. Some of the potential sectors include aerospace, engineering, automobiles, energy, manufacturing, defense, medicine and various other fields. Four-dimensional printing offers better reliability, improved consistency, and superior performance characteristics over 3D printing. Initial types of 4D printers contain versatile 3D structures pre-printed via 3D printing and that can be transformed to other sizes and shapes when immersed in water or exposed to light, pressure, gravity, or air [41]. Figure 5 summarizes the important roles of 4D printing in the field of manufacturing, as applicable to different industrial sectors. Although 4D printing has been in the manufacturing market over the last few years, its supply chain, with faster shipping and lower storage space options offer definite advantages. Four-dimensional printing removes a large degree of transportation and processing expenses, thus providing the supply chain with incredible applications [42][43].

Figure 5. Present and future applications of 4D printing in different sectors of industry.

The complex assemblies in the various applications will be way too labor-intensive and costly to manufacture using conventional fabrications technologies. The beauty of advanced manufacturing and printings lies in utilizing. Both the 3D and 4D printing offer great advancements, on the current standards, and are incredible technologies for the consumers, 4DP is more advanced, focusing futuristic applications on the technologies of the 3DP. However, 4D printing technology can have applications throughout numerous sectors as research and developmental efforts progress.

However, the notion of 5D printing is being talked about now and even investigated with [44]. Five-dimensional printing is not just an advanced version of 3D or 4D printing; it is a new branch of advanced printing. In this printing process, the printable object and the printhead have five degrees of freedom. In its place of the regular layer, it manufactures complex curved layers. In this AM process, the print object moves while the head of the printer is printing [45][46]. Thus, printing commences the curve path of the object being printed rather than moving through a traditional level as in the case of what usually happens for 3D printings. The main advantage of this 5D printing process is to produce a part with a curved layer with better mechanical strength. Added major advantage of this new advanced manufacturing technology is it uses less material compared to 3D printing. The new printing technique which combines the four-dimensional and five-dimensional printing techniques has also been conceptualized ( Figure 6 ). This means that the new six-dimensional (6D) printing is going to utilize five degrees of freedom and the final manufactured component will be a smart object [47][48]. This will be qualified for changing its properties or shape owing to its interaction with an external stimulus. A 6D printed object can be manufactured using less material, can perform movements by being exposed to an outer stimulus, and can be stronger than an equivalent 4D printed structure. Six-dimensional printings can allow the printed object to learn how to reconfigure itself appropriately, based on predictions via mathematical modeling, artificial intelligence, and external simulations.

Figure 6. Concept of 6D printing. Reprinted with permission from reference [47], Copyright 2021 by the authors and license MDPI, Basel, Switzerland.

References

  1. Wong, K.V.; Hernandez, A. A Review of Additive Manufacturing. ISRN Mech. Eng. 2012, 2012, 208760.
  2. Chu, H.; Yang, W.; Sun, L.; Cai, S.; Yang, R.; Liang, W.; Yu, H.; Liu, L. 4D Printing: A Review on Recent Progresses. Micromachines 2020, 11, 796.
  3. Guzmán-González, J.V.; Saldaña-Martínez, M.I.; Barajas-González, O.G.; Guzmán-Ramos, V.; García-Garza, A.K.; Franco-Herrada, M.G.; Selvas Aguilar, R.J.; García-Ramírez, M.A. Multifunctional Cube-like System for Biomedical Applications Featuring 3D Printing by Dual Deposition, Scanner, and UV Engraving; Gu, B., Helvajian, H., Piqué, A., Dunsky, C.M., Liu, J., Eds.; International Society for Optics and Photonics: San Francisco, CA, USA, 2017; p. 1009511.
  4. Chen, Z.; Li, Z.; Li, J.; Liu, C.; Lao, C.; Fu, Y.; Liu, C.; Li, Y.; Wang, P.; He, Y. 3D Printing of Ceramics: A Review. J. Eur. Ceram. Soc. 2019, 39, 661–687.
  5. Jia, Y.; He, H.; Geng, Y.; Huang, B.; Peng, X. High Through-Plane Thermal Conductivity of Polymer Based Product with Vertical Alignment of Graphite Flakes Achieved via 3D Printing. Compos. Sci. Technol. 2017, 145, 55–61.
  6. Gao, W.; Zhang, Y.; Ramanujan, D.; Ramani, K.; Chen, Y.; Williams, C.B.; Wang, C.C.L.; Shin, Y.C.; Zhang, S.; Zavattieri, P.D. The Status, Challenges, and Future of Additive Manufacturing in Engineering. Comput.-Aided Des. 2015, 69, 65–89.
  7. Mondal, K.; Nuñez, L.; Downey, C.M.; van Rooyen, I.J. Thermal Barrier Coatings Overview: Design, Manufacturing, and Applications in High-Temperature Industries. Ind. Eng. Chem. Res. 2021, 60, 6061–6077.
  8. Mondal, K.; Fujimoto, K.; McMurtrey, M.D. Advanced Manufacturing of Printed Melt Wire Chips for Cheap, Compact Passive In-Pile Temperature Sensors. JOM 2020, 72, 4196–4201.
  9. Mondal, K.; Nuñez, L.; Downey, C.M.; van Rooyen, I.J. Recent Advances in the Thermal Barrier Coatings for Extreme Environments. Mater. Sci. Energy Technol. 2021, 4, 208–210.
  10. Mondal, K.; McMurtrey, M.D. Present Status of the Functional Advanced Micro-, Nano-Printings—A Mini Review. Mater. Today Chem. 2020, 17, 100328.
  11. Oropallo, W.; Piegl, L.A. Ten Challenges in 3D Printing. Eng. Comput. 2016, 32, 135–148.
  12. Tibbits, S. 4D Printing: Multi-Material Shape Change. Archit. Des. 2014, 84, 116–121.
  13. Leist, S.K.; Zhou, J. Current Status of 4D Printing Technology and the Potential of Light-Reactive Smart Materials as 4D Printable Materials. Virtual Phys. Prototyp. 2016, 11, 249–262.
  14. Ngo, T.D.; Kashani, A.; Imbalzano, G.; Nguyen, K.T.Q.; Hui, D. Additive Manufacturing (3D Printing): A Review of Materials, Methods, Applications and Challenges. Compos. Part B Eng. 2018, 143, 172–196.
  15. Wu, J.-J.; Huang, L.-M.; Zhao, Q.; Xie, T. 4D Printing: History and Recent Progress. Chin. J. Polym. Sci. 2018, 36, 563–575.
  16. Kuang, X.; Roach, D.J.; Wu, J.; Hamel, C.M.; Ding, Z.; Wang, T.; Dunn, M.L.; Qi, H.J. Advances in 4D Printing: Materials and Applications. Adv. Funct. Mater. 2019, 29, 1805290.
  17. Bajpai, A.; Baigent, A.; Raghav, S.; Brádaigh, C.Ó.; Koutsos, V.; Radacsi, N. 4D Printing: Materials, Technologies, and Future Applications in the Biomedical Field. Sustainability 2020, 12, 628.
  18. Momeni, F.; Mehdi, M.; Hassani, N.S.; Liu, X.; Ni, J. A Review of 4D Printing. Mater. Des. 2017, 122, 42–79.
  19. Khoo, Z.X.; Teoh, J.E.M.; Liu, Y.; Chua, C.K.; Yang, S.; An, J.; Leong, K.F.; Yeong, W.Y. 3D Printing of Smart Materials: A Review on Recent Progresses in 4D Printing. Virtual Phys. Prototyp. 2015, 10, 103–122.
  20. Zolfagharian, A.; Kaynak, A.; Bodaghi, M.; Kouzani, A.Z.; Gharaie, S.; Nahavandi, S. Control-Based 4D Printing: Adaptive 4D-Printed Systems. Appl. Sci. 2020, 10, 3020.
  21. Kang, M.; Pyo, Y.; Jang, J.Y.; Park, Y.; Son, Y.-H.; Choi, M.; wan Ha, J.; Chang, Y.-W.; Lee, C.S. Design of a Shape Memory Composite(SMC) Using 4D Printing Technology. Sens. Actuators Phys. 2018, 283, 187–195.
  22. Bodaghi, M.; Noroozi, R.; Zolfagharian, A.; Fotouhi, M.; Norouzi, S. 4D Printing Self-Morphing Structures. Materials 2019, 12, 1353.
  23. An, J.; Chua, C.K.; Mironov, V. A Perspective on 4D Bioprinting. Int. J. Bioprinting 2016, 2.
  24. Inamura, C.; Stern, M.; Lizardo, D.; Houk, P.; Oxman, N. Additive Manufacturing of Transparent Glass Structures. 3D Print. Addit. Manuf. 2018, 5, 269–283.
  25. Ge, Q.; Qi, H.J.; Dunn, M.L. Active Materials by Four-Dimension Printing. Appl. Phys. Lett. 2013, 103, 131901.
  26. Shi, Y.M.; Zhang, M.; Phuhongsung, P. Microwave-induced spontaneous deformation of purple potato puree and oleogel in 4D printing. J. Food Eng. 2022, 313, 110757.
  27. Pei, E. 4D Printing: Dawn of an Emerging Technology Cycle. Assem. Autom. 2014, 34, 310–314.
  28. Jeong, H.Y.; An, S.-C.; Lim, Y.; Jeong, M.J.; Kim, N.; Jun, Y.C. 3D and 4D Printing of Multistable Structures. Appl. Sci. 2020, 10, 7254.
  29. Farid, M.I.; Wu, W.; Liu, X.; Wang, P. Additive Manufacturing Landscape and Materials Perspective in 4D Printing. Int. J. Adv. Manuf. Technol. 2021, 115, 2973–2988.
  30. Ramesh, S.; Usha, C.; Naulakha, N.K.; Adithyakumar, C.R.; Lohith Kumar Reddy, M. Advancements in the Research of 4D Printing-A Review. IOP Conf. Ser. Mater. Sci. Eng. 2018, 376, 012123.
  31. van Manen, T.; Janbaz, S.; Jansen, K.M.B.; Zadpoor, A.A. 4D Printing of Reconfigurable Metamaterials and Devices. Commun. Mater. 2021, 2, 56.
  32. Zhang, Z.; Demir, K.G.; Gu, G.X. Developments in 4D-Printing: A Review on Current Smart Materials, Technologies, and Applications. Int. J. Smart Nano Mater. 2019, 10, 205–224.
  33. Zou, Y.; Huang, Z.; Li, X.; Lv, P. 4D Printing Pre-Strained Structures for Fast Thermal Actuation. Front. Mater. 2021, 8, 661999.
  34. Momeni, F.; Ni, J. Laws of 4D Printing. Engineering 2020, 6, 1035–1055.
  35. Jacobsen, M. Clearing the Way for Pivotal 21st-Century Innovation: More Talent Literacy, Less Talent Management. In Giftedness and Talent in the 21st Century; Ambrose, D., Sternberg, R.J., Eds.; Sense Publishers: Rotterdam, The Netherlands, 2016; pp. 163–179. ISBN 978-94-6300-503-6.
  36. Zhou, Y.; Huang, W.M.; Kang, S.F.; Wu, X.L.; Lu, H.B.; Fu, J.; Cui, H. From 3D to 4D Printing: Approaches and Typical Applications. J. Mech. Sci. Technol. 2015, 29, 4281–4288.
  37. Uchida, T.; Onoe, H. 4D Printing of Multi-Hydrogels Using Direct Ink Writing in a Supporting Viscous Liquid. Micromachines 2019, 10, 433.
  38. Wei, X.; Li, D.; Jiang, W.; Gu, Z.; Wang, X.; Zhang, Z.; Sun, Z. 3D Printable Graphene Composite. Sci. Rep. 2015, 5, 11181.
  39. Wang, X. Advanced Polymers for Three-Dimensional (3D) Organ Bioprinting. Micromachines 2019, 10, 814.
  40. Huang, Y.; He, K.; Wang, X. Rapid Prototyping of a Hybrid Hierarchical Polyurethane-Cell/Hydrogel Construct for Regenerative Medicine. Mater. Sci. Eng. C 2013, 33, 3220–3229.
  41. Haleem, A.; Javaid, M.; Singh, R.P.; Suman, R. Significant Roles of 4D Printing Using Smart Materials in the Field of Manufacturing. Adv. Ind. Eng. Polym. Res. 2021, S2542504821000282.
  42. Castro, N.J.; Meinert, C.; Levett, P.; Hutmacher, D.W. Current Developments in Multifunctional Smart Materials for 3D/4D Bioprinting. Curr. Opin. Biomed. Eng. 2017, 2, 67–75.
  43. Esworthy, T.J.; Miao, S.; Lee, S.-J.; Zhou, X.; Cui, H.; Zuo, Y.Y.; Zhang, L.G. Advanced 4D-Bioprinting Technologies for Brain Tissue Modeling and Study. Int. J. Smart Nano Mater. 2019, 10, 177–204.
  44. Gonzalez-Gutierrez, J.; Cano, S.; Schuschnigg, S.; Kukla, C.; Sapkota, J.; Holzer, C. Additive Manufacturing of Metallic and Ceramic Components by the Material Extrusion of Highly-Filled Polymers: A Review and Future Perspectives. Materials 2018, 11, 840.
  45. Haleem, A.; Javaid, M.; Vaishya, R. 5D Printing and Its Expected Applications in Orthopaedics. J. Clin. Orthop. Trauma 2019, 10, 809–810.
  46. Gillaspie, E.A.; Matsumoto, J.S.; Morris, N.E.; Downey, R.J.; Shen, K.R.; Allen, M.S.; Blackmon, S.H. From 3-Dimensional Printing to 5-Dimensional Printing: Enhancing Thoracic Surgical Planning and Resection of Complex Tumors. Ann. Thorac. Surg. 2016, 101, 1958–1962.
  47. Georgantzinos, S.K.; Giannopoulos, G.I.; Bakalis, P.A. Additive Manufacturing for Effective Smart Structures: The Idea of 6D Printing. J. Compos. Sci. 2021, 5, 119.
  48. Kraljić, D.; Štefanič, M.; Kamnik, R. 3D Printing with 6D of Freedom: Controlling Material Extrusion Speed. In Advances in Service and Industrial Robotics; Berns, K., Görges, D., Eds.; Advances in Intelligent Systems and Computing; Springer International Publishing: Cham, Switzerland, 2020; Volume 980, pp. 170–178. ISBN 978-3-030-19647-9.
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    Mondal, K. Additive Manufacturing Technologies. Encyclopedia. Available online: https://encyclopedia.pub/entry/16010 (accessed on 25 June 2022).
    Mondal K. Additive Manufacturing Technologies. Encyclopedia. Available at: https://encyclopedia.pub/entry/16010. Accessed June 25, 2022.
    Mondal, Kunal. "Additive Manufacturing Technologies," Encyclopedia, https://encyclopedia.pub/entry/16010 (accessed June 25, 2022).
    Mondal, K. (2021, November 15). Additive Manufacturing Technologies. In Encyclopedia. https://encyclopedia.pub/entry/16010
    Mondal, Kunal. ''Additive Manufacturing Technologies.'' Encyclopedia. Web. 15 November, 2021.
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