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2001
For a given material system, the laser energy density, E s is a key factor which affects quality of the laser sintered structure. A laser energy density is defined by the laser power, laser scan speed and laser beam spot size: $$ {E_s} = \frac{P}{{v\delta }}\left( {J/c{m^2}} \right) $$ (5.1) where P is the incident laser power (Watts), v, the
L. Lü, J. Y. H. Fuh, Y. S. Wong
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For a given material system, the laser energy density, E s is a key factor which affects quality of the laser sintered structure. A laser energy density is defined by the laser power, laser scan speed and laser beam spot size: $$ {E_s} = \frac{P}{{v\delta }}\left( {J/c{m^2}} \right) $$ (5.1) where P is the incident laser power (Watts), v, the
L. Lü, J. Y. H. Fuh, Y. S. Wong
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Selective Laser Sintering of PEEK
CIRP Annals, 2007Abstract Polyetheretherketone (PEEK) is a good choice especially for manufacturing medical instruments or implants. These parts are typically produced by conventional manufacturing methods, like injection moulding. Selective Laser Sintering (SLS) could offer more flexibility.
M. Schmidt, D. Pohle, T. Rechtenwald
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Selective laser sintering of porcelain
Journal of the European Ceramic Society, 2018Abstract Selective Laser Sintering (SLS) technique is used to fabricate 3D porcelain products with complex shapes. Commercial powder has been studied and optimized in terms of morphology and particle size distribution in order to get a perfect powder layerwise which remains the critical step of such a technique. The influence of laser energy density (
Danezan, A. +6 more
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Selective Laser Sintering (SLS)
2004Selective Laser Sintering (SLS) uses a laser beam directed by a computer onto the surface of metallic or non-metallic powders to produce copies of solid or surface models rapidly. It is one of the few RP processes capable of producing durable and functional parts from a wide range of prototype materials that have physical properties similar to ...
Patri K. Venuvinod, Weiyin Ma
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Selective Laser Sintering of Metals
Manufacturing Science and Engineering: Volume 2 — Non-Traditional Design and Layered Manufacturing; Rolling Technology; Intelligent Machine Tool Systems; Measurement and Inspection of Products and Processes; Non-Traditional Manufacturing Processes of the 1990s, 1994Abstract The use of Solid Freeform Fabrication for creating models and visual prototypes of products is gaining rapid acceptance in industry as an aid to decreasing time-to-market while increasing product quality. Research in these technologies has now turned to searching for new processes and material systems that will allow the ...
D. L. Bourell +4 more
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Selective Laser Sintering of Zirconia
MRS Proceedings, 2000AbstractA combination of Selective Laser Sintering and colloidal infiltration has been used to create partially stabilized zirconia molds for titanium casting. The mold material system was chosen for its low reactivity with molten titanium and thermal shock resistance.
Nicole R. Harlan +3 more
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Selective laser sintering in biomedical engineering
Medical & Biological Engineering & Computing, 2012Selective laser sintering (SLS) is a solid freeform fabrication technique, developed by Carl Deckard for his master's thesis at the University of Texas, patented in 1989. SLS manufacturing is a technique that produces physical models through a selective solidification of a variety of fine powders.
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Selective laser sintering II. Sintering multilayer refractory composites
Powder Metallurgy and Metal Ceramics, 1998Processes are considered in the selective laser sintering of multilayer composites based on TiN’MTiB2 refractory powder mixtures, hard-alloy material of TN20 type, and a steel substrate. Selectivity of the process, which is expressed in the behavior of the multilayer composite material in sintering regimes that differ in laser power input, is ...
A. V. Ragulya +4 more
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Selective laser sintering: Recent advances
PICALO 2010: 4th Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication, 2010Selective Laser Sintering (SLS) is a well-known technique for rapid prototyping, rapid manufacturing and rapid tooling and is fast gaining acceptance in various areas of applications such as aerospace, moulding and biomedical. SLS has gone through vast changes since its introduction more than two decades back. The process has become a leading technique
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Automatic Laser Control System for Selective Laser Sintering
IEEE Transactions on Industrial Informatics, 2019The quality of SLS products is dramatically degraded by excessive temperature gradients in the thermal profile of the powder bed. Thermal gradients in the presintering temperature, which is defined as powder temperature before laser scans, are inevitable in commercial SLS machines due to various reasons.
Lixun Zhang +4 more
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