Characterization of the process control for the direct laser metallic powder deposition

By G. Bi, A. Gasser, K. Wissenbach, A. Drenker, Reinhart Poprawe. 2006

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A review on quality control in additive manufacturing (2018, background): “In addition, Bi et al. (2006) investigated printing parameters relationships by looking at microstructure, hardness and dimensional accuracy.”
Measurement Science Needs for Real-time Control of Additive Manufacturing Powder Bed Fusion Processes (2015, unknown): “deposition of thin walls [21].”
Microstructure and Mechanical Properties of AISI 316L Produced by Directed Energy Deposition-Based Additive Manufacturing: A Review (2020, background): “In addition to the typical microstructural characteristics that can be formed in the DED samples, they also reported that the remelting and tempering of the middle layers during the deposition of the next layer, with the exception of the previous layer, are the source of microstructural variations [”
A review on wire arc additive manufacturing: Monitoring, control and a framework of automated system (2020, background): “[111] achieved closed-loop control based on infra temperature signal during a laser”
Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing (2016, background): “DED process has applications for complex 3D shapes as well as inservice repair operationswith high strength and high ductility [74].”