scholarly journals Maturity Assessment of Laser Powder Bed Fusion Process Chain Modelling and Simulation

2021 ◽  
pp. 34-45
Author(s):  
Anas Yaghi ◽  
Shukri Afazov ◽  
Matteo Villa
Keyword(s):  
Case Studies ◽  
Manufacturing Process ◽  
Modelling And Simulation ◽  
Fusion Process ◽  
Design Solution ◽  
Powder Bed Fusion ◽  
Process Chain ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Process Chains

This paper presents case studies of additive manufacturing process chains including laser powder bed fusion and post-processes. The presented case studies are used to assess the maturity of the manufacturing process chains using a Modelling and Simulation Readiness Level Scale. The results from the assessment have shown that the maturity of the modelling and simulation of laser powder bed fusion process chains lies between the stage of applied research and development and the stage of being instrumental, with high reliance on modelling and simulation experts. This means that the laser powder bed fusion (L-PBF) process chain modelling and simulation can support low-risk development, with high reliance on modelling and simulation experts, making them suitable for qualitative assessment, alternative design/solution ranking, defining the design structure, constraining the design space and replacing some experimental trials. This shows that further maturation is required before the modelling and simulation methods and codes are well recognised as best practice in the industry and are part of operational process control at any stage of the supply chain.

scholarly journals Effects on the distortion of Inconel 718 components along a hybrid laser-based additive manufacturing process chain using laser powder bed fusion and laser metal deposition

2021 ◽  
Author(s):  
Eckart Uhlmann ◽  
Jan Düchting ◽  
Torsten Petrat ◽  
Erwin Krohmer ◽  
Benjamin Graf ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Inconel 718 ◽  
Powder Bed Fusion ◽  
Laser Metal Deposition ◽  
Process Chain ◽  
Laser Powder Bed Fusion ◽  
Plate Material ◽  
Powder Bed ◽  
Manufacturing Process Chain

AbstractThe combination of laser powder bed fusion (LPBF), known for its geometrical freedom and accuracy, and the nozzle-based laser metal deposition process (LMD), known for its high build-up rates, has great potential to reduce the additive manufacturing times for large metallic parts. For the industrial application of the LPBF-LMD hybrid process chain, it is necessary to investigate the influence of the LMD process on the LPBF substrate. In addition, the build plate material also has a significant impact on the occurrence of distortion along the additive manufacturing process chain. In the literature, steel build plates are often used in laser-based additive manufacturing processes of Inconel 718, since a good metallurgical bonding can be assured whilst reducing costs in the production and restoration of the build plates. This paper examines the distortion caused by LMD material deposition and the influence of the build plate material along the hybrid additive manufacturing process chain. Twin cantilevers are manufactured by LPBF and an additional layer is subsequently deposited with LMD. The distortion is measured in the as-built condition as well as after heat treatment. The effect of different LMD hatch strategies on the distortion is determined. The experiments are conducted using the nickel-base alloy Inconel 718. The results show a significant influence of LMD path strategies on distortion, with shorter tool paths leading to less distortion. The remaining distortion after heat treatment is considerably dependent on the material of the build plate.

scholarly journals Role of laser powder bed fusion process parameters in crystallographic texture of additive manufactured Nb-48Ti alloy

2021 ◽  
Author(s):  
Rafael de Moura Nobre ◽  
Willy Ank de Morais ◽  
Matheus Tavares Vasques ◽  
Jhoan Guzmán ◽  
Daniel Luiz Rodrigues Junior ◽  
...  
Keyword(s):  
Process Parameters ◽  
Crystallographic Texture ◽  
Fusion Process ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

Hot cracking in ZK60 magnesium alloy produced by laser powder bed fusion process

2021 ◽  
pp. 130283
Author(s):  
Jinge Liu ◽  
Bangzhao Yin ◽  
Zhaorui Sun ◽  
Peng Wen ◽  
Yufeng Zheng ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Hot Cracking ◽  
Fusion Process ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Zk60 Magnesium Alloy

Semi-supervised Monitoring of Laser powder bed fusion process based on acoustic emissions

2021 ◽  
pp. 1-17
Author(s):  
Vigneashwara Pandiyan ◽  
Rita Drissi-Daoudi ◽  
Sergey Shevchik ◽  
Giulio Masinelli ◽  
Tri Le-Quang ◽  
...  
Keyword(s):  
Acoustic Emissions ◽  
Fusion Process ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed
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