Results 41 to 50 of about 2,739,050 (267)
Development of Control Systems for Laser Powder Bed Fusion
The International Journal of Advanced Manufacturing Technology, 2023 Abstract This article aims to highlight the development of an intermittent controller designed to compensate and rectify the lack of fusion (LoF) zones that induce during the LPBF process. The initial step involved the utilization of the Self-Organizing Map (SOM) algorithm to identify the location of LoF defects.
Katayoon Taherkhani +3 more
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Bioactive Materials, 2019 Recently, the fabrication methods of orthopedic implants and devices have been greatly developed. Additive manufacturing technology allows the production of complex structures with bio-mimicry features, and has the potential to overcome the limitations ...
Li Yuan, Songlin Ding, Cuie Wen
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Ensemble learning based defect detection of laser sintering
IET Optoelectronics, 2023 In rapid development, Selective Laser Sintering (SLS) creates prototypes by processing industrial materials, for example, polymers. Such materials are usually in powder form and fused by a laser beam.
Junyi Xin +4 more
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Research Progress on Surface Polishing Technology of Powder Bed Fusion Titanium Alloy [PDF]
Cailiao BaohuPowder bed fusion titanium alloys， as an important metallic material， are widely used in aerospace， medical devices and automotive industries.However， due to their unique material properties and processing methods， surface quality and performance ...
ZHOU Di, WU Songquan, LI Ziyang, LIU Lei, YANG Yi, WANG Hao, HUANG Aijun
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Eutectic Superalloys for Laser Powder Bed Fusion [PDF]
Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC ...
Christofidou, K.A. +8 more
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Crystals, 2021 This work proposed a computationally efficient analytical modeling strategy to calculate the product porosity in laser powder bed fusion (LPBF) induced by a lack-of-fusion defect, with the consideration of cap area in solidified molten pools, influence ...
Wenjia Wang, Steven Y. Liang
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Progress in metallic powders for laser powder bed fusion
Metal Powder Report, 2023 A review of powder characterization, preparation and reuse.
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An Empirical Model and Feedforward Control of Laser Powder Bed Fusion
ASME Letters in Dynamic Systems and Control, 2023 Abstract Reliable process control for the laser powder bed fusion process, especially at the melt pool scale, remains an open challenge. One of the reasons for this is the lack of suitable control-oriented models and associated control design strategies. To address this issue, this paper (1) identifies an empirical control-oriented model
Aleksandr Shkoruta +2 more
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data
Advanced Engineering Materials, EarlyView.Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour +5 more
wiley +1 more source