Direct metal additive manufacturing processes and their sustainable applications for green technology: A review

Ahn, Dong‐Gyu

doi:10.1007/s40684-016-0048-9

Cited by 200 publications

(107 citation statements)

References 100 publications

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“…5,6,[10][11][12] The laser-sintering technique enables the fabrication of complex 3-D objects quickly with high precision (20 mm) and at low cost. [10][11][12][13][14][15] Laser-sintering technology can be described using different terminologies, such as selective laser melting (SLM), selective laser-sintering (SLS), or direct metal laser-sintering (DMLS). 6,9,12,13 SLM involves full melting of the metal powder; while, both SLS and DMLS involve partial melting of some the metal powder, particularly melting at the surface of the particle.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13][14][15] Laser-sintering technology can be described using different terminologies, such as selective laser melting (SLM), selective laser-sintering (SLS), or direct metal laser-sintering (DMLS). 6,9,12,13 SLM involves full melting of the metal powder; while, both SLS and DMLS involve partial melting of some the metal powder, particularly melting at the surface of the particle. [12][13][14] The main difference between SLS and DMLS is that SLS powder can be metal or other materials (e.g., ceramic or polymer), and the powder only partially melts during the process, [12][13][14][15][16] whereas DMLS uses a mixture of metal powders with different melting temperatures (high or low).…”

Section: Introductionmentioning

confidence: 99%

“…6,9,12,13 SLM involves full melting of the metal powder; while, both SLS and DMLS involve partial melting of some the metal powder, particularly melting at the surface of the particle. [12][13][14] The main difference between SLS and DMLS is that SLS powder can be metal or other materials (e.g., ceramic or polymer), and the powder only partially melts during the process, [12][13][14][15][16] whereas DMLS uses a mixture of metal powders with different melting temperatures (high or low). [12][13][14][16][17][18] During the DMLS process, the powder with the low melting temperature fully melts while the powder with high melting temperature partially melts.…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14] The main difference between SLS and DMLS is that SLS powder can be metal or other materials (e.g., ceramic or polymer), and the powder only partially melts during the process, [12][13][14][15][16] whereas DMLS uses a mixture of metal powders with different melting temperatures (high or low). [12][13][14][16][17][18] During the DMLS process, the powder with the low melting temperature fully melts while the powder with high melting temperature partially melts. 12,13,16 In this study, we used two systems that are commercially available for dental applications; the Phenix system (Phenix, Riom, France) that is based on the SLS method, and the EOS system (EOS, Krailling, Germany) that is based on the DMLS approach.…”

Section: Introductionmentioning

confidence: 99%

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Removable partial denture alloys processed by laser‐sintering technique

et al. 2017

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Removable partial dentures (RPDs) are traditionally made using a casting technique. New additive manufacturing processes based on laser sintering has been developed for quick fabrication of RPDs metal frameworks at low cost. The objective of this study was to characterize the mechanical, physical, and biocompatibility properties of RPD cobalt-chromium (Co-Cr) alloys produced by two laser-sintering systems and compare them to those prepared using traditional casting methods. The laser-sintered Co-Cr alloys were processed by the selective laser-sintering method (SLS) and the direct metal laser-sintering (DMLS) method using the Phenix system (L-1) and EOS system (L-2), respectively. L-1 and L-2 techniques were 8 and 3.5 times more precise than the casting (CC) technique (p < 0.05). Co-Cr alloys processed by L-1 and L-2 showed higher (p < 0.05) hardness (14-19%), yield strength (10-13%), and fatigue resistance (71-72%) compared to CC alloys. This was probably due to their smaller grain size and higher microstructural homogeneity. All Co-Cr alloys exhibited low porosity (2.1-3.3%); however, pore distribution was more homogenous in L-1 and L-2 alloys when compared to CC alloys. Both laser-sintered and cast alloys were biocompatible. In conclusion, laser-sintered alloys are more precise and present better mechanical and fatigue properties than cast alloys for RPDs. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1174-1185, 2018.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removable partial denture alloys processed by laser‐sintering technique

et al. 2017

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“…AM technology enables designers to freely design materials and is also needed to achieve design functionality [4]. Thus, materials primarily affect 3D-printed FRCs; some properties, such as flowability and workability of 3D-printed FRC, influence performance of printed structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Test on Drying Shrinkage of 3D-printed Fiber-reinforced Concrete at Early Ages

Hui¹,

Almansa²

2018

AJCEA

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Drying shrinkage due to capillary tension in porous pores has been proven to affect the structural behaviour of concrete. Thus, this paper focuses on the drying shrinkage of 3D-printed fiber-reinforced concrete (3D-printed FRC). The specimens consisted of two groups fabricated by 3D printer for characterization and with a minimal friction of steel fibers in the concrete. One group was used for the compression strength test. The other group was used for drying shrinkage tests in a curing chamber with constant conditions over 60 days. The comparison of expected results and FIB model concrete 2010 suggest that porous structure effects of 3D-printed fiber-reinforced concrete (3D-printed FRC) should be considered. Thus, optimizing cement concrete matrix is necessary in proposing coefficients in moisture diffusion formulations.

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Design for Sustainable Methods in Additive Manufacturing

Kakarla,

Kong

2024

Sustainable Machining and Green Manufacturing

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Direct metal additive manufacturing processes and their sustainable applications for green technology: A review

Cited by 200 publications

References 100 publications

Removable partial denture alloys processed by laser‐sintering technique

Removable partial denture alloys processed by laser‐sintering technique

Experimental Test on Drying Shrinkage of 3D-printed Fiber-reinforced Concrete at Early Ages

Design for Sustainable Methods in Additive Manufacturing

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