An overview of selective laser sintering and melting research using bibliometric indicators

Ameen, Wadea; Ghaleb, Atef M.; Alatefi, Moath; Alkhalefah, Hisham; Al‐Ahmari, Abdulrahman

doi:10.1080/17452759.2018.1489973

Cited by 22 publications

(6 citation statements)

References 22 publications

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“…Extrusion‐based printing (EBP) of polymer melts (including fused filament fabrication) is the most inexpensive and readily accessed method for additive manufacturing (AM). [ 1 ] Other well‐known AM technologies such as electron beam melting [ 2 ] and selective laser sintering [ 3 ] involve melt processing to form their final products; however, they are less accessible due to printer costs. In AM, melt processing is a sustainable approach to avoid the use of solvents for product fabrication in a diverse range of end uses.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Mechau

Frank

Bakırcı

et al. 2020

Macro Chemistry & Physics

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Several manufacturing technologies beneficially involve processing from the melt, including extrusion‐based printing, electrospinning, and electrohydrodynamic jetting. In this study, (AB)n segmented copolymers are tailored for melt‐processing to form physically crosslinked hydrogels after swelling. The copolymers are composed of hydrophilic poly(ethylene glycol)‐based segments and hydrophobic bisurea segments, which form physical crosslinks via hydrogen bonds. The degree of polymerization was adjusted to match the melt viscosity to the different melt‐processing techniques. Using extrusion‐based printing, a width of approximately 260 µm is printed into 3D constructs, with excellent interlayer bonding at fiber junctions, due to hydrogen bonding between the layers. For melt electrospinning, much thinner fibers in the range of about 1–15 µm are obtained and produced in a typical nonwoven morphology. With melt electrowriting, fibers are deposited in a controlled way to well‐defined 3D constructs. In this case, multiple fiber layers fuse together enabling constructs with line width in the range of 70 to 160 µm. If exposed to water the printed constructs swell and form physically crosslinked hydrogels that slowly disintegrate, which is a feature for soluble inks within biofabrication strategies. In this context, cytotoxicity tests confirm the viability of cells and thus demonstrating biocompatibility of this class of copolymers.

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Section: Introductionmentioning

confidence: 99%

Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Mechau

Frank

Bakırcı

et al. 2020

Macro Chemistry & Physics

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“…With selective laser sintering (SLS), a powder bed fusion additive manufacturing (AM) process [11], three-dimensional (3D) objects can be fabricated by adding powdered materials layer by layer according to computer-aided design (CAD) models. The main advantage of SLS is that it can process an extensive scope of materials including polymers, metals, ceramics, and composites [12,13,14]. In these SLS materials, polymers are most widely used and also show a broad application prospect, due to their diversity in species, performance, and application of various modification technologies [15].…”

Section: Introductionmentioning

confidence: 99%

Glass Fiber-Reinforced Phenol Formaldehyde Resin-Based Electrical Insulating Composites Fabricated by Selective Laser Sintering

Zhou

Liu

et al. 2019

Polymers

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In this study, glass fiber (GF)/phenol formaldehyde resin (PF)/epoxy resin (EP) three-phase electrical insulating composites were fabricated by selective laser sintering (SLS) additive manufacturing technology and subsequent infiltration. In the three-phase composites, glass fibers modified by a silane coupling agent (KH-550) were used as reinforcements, phenol formaldehyde resin acted as the binder and matrix, and infiltrated epoxy resin was the filler. Mechanical and electrical properties such as tensile strength, bending strength, dielectric constant, electrical conductivity, and electric breakdown strength of the GF/PF/EP three-phase composite parts were investigated. The results indicated that after being infiltrated with EP, the bending strength and tensile strength of the GF/PF/EP composites increased by 30% and 42.8%, respectively. Moreover, the flexural strength and tensile strength of the GF/PF/EP composite increased with the increase of the glass fiber content. More importantly, the three-phase composites showed high electrical properties. Significant improvement in the dielectric constant, electric breakdown strength, and resistivity with the increase in the content of glass fiber was observed. This enables the prepared GF/PF/EP composites to form complex structural electrical insulation devices by SLS, which expands the materials and applications of additive manufacturing technology.

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“…SLS is an additive manufacturing technique that enables the production of 3D objects by melting layer by layer, with a laser, a powdered material according to the geometry of the product. More details regarding the process can be found in literature [1,2,3,4]. Although SLS was considered a 3D printing technique for prototype production, in the last decade, it also has been used to produce end-use parts.…”

Section: Introductionmentioning

confidence: 99%

In Situ WAXD and SAXS during Tensile Deformation Of Moulded and Sintered Polyamide 12

2019

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To provide knowledge to improve the mechanical performance of Polyamide 12 (PA12) sintered products, we have studied experimentally the mechanical response and structure development under constant strain rate of compression moulded and laser sintered PA12 by means of in situ small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) experiments. It is found that at low temperatures, i.e., below the glass transition temperature, the brittle failure of laser sintered samples is determined by the fast formation of voids that originate at the beginning of the macroscopic plastic deformation. This effect appears to be faster at temperatures below room temperature and it is less effective at higher temperatures. When tested at 120 ∘ C, sintered PA12 shows a better mechanical response in terms of yield stress and a comparable strain at break with respect to moulded PA12. This can be explained by considering that sintered samples have slightly thicker crystals that can sustain higher stress at high temperature. However, this also leads to the formation of a larger number of voids at low testing temperatures. This work does not attempt to quantify the micromechanics behind crystals deformation and disruption, but it provides a deeper insight in the difference between the mechanical response of moulded and sintered PA12.

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An overview of selective laser sintering and melting research using bibliometric indicators

Cited by 22 publications

References 22 publications

Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Glass Fiber-Reinforced Phenol Formaldehyde Resin-Based Electrical Insulating Composites Fabricated by Selective Laser Sintering

In Situ WAXD and SAXS during Tensile Deformation Of Moulded and Sintered Polyamide 12

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An overview of selective laser sintering and melting research using bibliometric indicators

Cited by 22 publications

References 22 publications

Hydrophilic (AB)n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Hydrophilic (AB)n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Glass Fiber-Reinforced Phenol Formaldehyde Resin-Based Electrical Insulating Composites Fabricated by Selective Laser Sintering

In Situ WAXD and SAXS during Tensile Deformation Of Moulded and Sintered Polyamide 12

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Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing

Hydrophilic (AB)_n Segmented Copolymers for Melt Extrusion‐Based Additive Manufacturing