Results 181 to 190 of about 5,650 (217)
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Manufacturing Letters, 2019
Abstract In Laser Powder Bed Fusion (LPBF) along, more than 50 process parameters are known to affect print quality. The current state-of-the-art practice in process control only considers a small fraction of them – mainly on laser power and scanning speed affecting temperature gradient and geometry of a melting pool.
Mohammadhossein Amini +2 more
exaly +2 more sources
Abstract In Laser Powder Bed Fusion (LPBF) along, more than 50 process parameters are known to affect print quality. The current state-of-the-art practice in process control only considers a small fraction of them – mainly on laser power and scanning speed affecting temperature gradient and geometry of a melting pool.
Mohammadhossein Amini +2 more
exaly +2 more sources
Laser Welding of Laser Powder Bed Fusion (LPBF) Manufactured 316L Stainless Steel Lap Joint
Key Engineering Materials, 2021The aim of the study was to determine the static strength of laser welded lap joint in laser powder bed fusion (LPBF) printed stainless steel material and also a joint formed of printed and commercial sheet metal. Printed 316L test pieces with a thickness of 2 mm and a similar commercial 2 mm thin plate were used as test material.
Jarmo Mäkikangas +4 more
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Additive Manufacturing, 2021
The subject of this study is an investigation of the influence of storage conditions of AlSi10Mg powder on the LPBF parts. For this purpose, powders that were stored and aged under humid conditions in a climatic chamber for a certain period of time and subsequently dried in some instances were manufactured by LPBF.
Kirstin Riener +3 more
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The subject of this study is an investigation of the influence of storage conditions of AlSi10Mg powder on the LPBF parts. For this purpose, powders that were stored and aged under humid conditions in a climatic chamber for a certain period of time and subsequently dried in some instances were manufactured by LPBF.
Kirstin Riener +3 more
openaire +1 more source
Materials Characterization, 2018
Abstract A comprehensive analysis of solidification patterns and microstructural development is presented for an Al10SiMg sample produced by Laser Powder Bed Fusion (LPBF). Utilizing a novel scanning strategy that involves counter-clockwise rotation of the scan vector by 67° upon completion of each layer, a relatively randomized cusp-like pattern of ...
Hong Qin, Vahid Fallah, Qingshan Dong
exaly +2 more sources
Abstract A comprehensive analysis of solidification patterns and microstructural development is presented for an Al10SiMg sample produced by Laser Powder Bed Fusion (LPBF). Utilizing a novel scanning strategy that involves counter-clockwise rotation of the scan vector by 67° upon completion of each layer, a relatively randomized cusp-like pattern of ...
Hong Qin, Vahid Fallah, Qingshan Dong
exaly +2 more sources
Impact Separation of Support Structures from Laser Powder Bed Fusion Generated LPBF Parts
2021Laser powder bed fusion (LPBF) of parts often requires support structures in order to fix overhangs, dissipate heat and reduce deflections due to thermal expansion and resulting residual stresses during laser sintering. The removal of support structures is a manually accomplished tedious work today.
Möller, Carsten +2 more
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Rapid Prototyping Journal, 2022
Purpose The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium powders using laser powder bed fusion (LPBF). In addition, the influence of manufacturing parameters and different melting strategies, including multiple cycles of ...
Agnieszka Chmielewska +6 more
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Purpose The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium powders using laser powder bed fusion (LPBF). In addition, the influence of manufacturing parameters and different melting strategies, including multiple cycles of ...
Agnieszka Chmielewska +6 more
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Influence of the Inert Gas Flow on the Laser Powder Bed Fusion (LPBF) Process
2020The inert gas flow is known to have a significant impact on the laser powder bed fusion (LPBF) process in terms of process stability and consistent process results across the whole build platform. Thus, the optimization of the inert gas flow leads to both direct and indirect improvements of the part quality as follows.
Florian Wirth +3 more
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Journal of Alloys and Compounds, 2021
Abstract TA15 titanium alloy has been widely used in the aerospace industry due to its moderate high-temperature performance. In this research, TA15 samples with excellent mechanical properties were successfully fabricated by laser powder bed fusion (LPBF).
Xuping Wu +4 more
exaly +2 more sources
Abstract TA15 titanium alloy has been widely used in the aerospace industry due to its moderate high-temperature performance. In this research, TA15 samples with excellent mechanical properties were successfully fabricated by laser powder bed fusion (LPBF).
Xuping Wu +4 more
exaly +2 more sources
Demonstration of Closed-Loop Control for Laser Powder Bed Fusion (LPBF)
2020Currently, AM processes such as LPBF are performed open loop, using a fixed, preprogrammed definition of material deposition (path, speed, laser power, and so on). Actual layer and part formation details, even when measured, are not fed back to the print controller to account for actual, as-made layer conditions. Unanticipated layer and part deviations
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