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The International Journal of Advanced Manufacturing Technology
Erschienen in: The International Journal of Advanced Manufacturing Technology 5-8/2019

31.07.2019 | ORIGINAL ARTICLE

Closed loop control of melt pool width in robotized laser powder–directed energy deposition process

verfasst von: Meysam Akbari, Radovan Kovacevic

Erschienen in: The International Journal of Advanced Manufacturing Technology | Ausgabe 5-8/2019

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Abstract

Robotized laser powder–directed energy deposition is a non-linear process, and the dynamic response of the system varies layer by layer. An adaptable PI controller with layer-dependent control gains was developed to ensure a constant melt pool width through the entire build. The laser power was selected as the control output variable, and the melt pool width was chosen as the control input variable. The performance of the controller was evaluated through deposition of thin wall samples. The results showed that the controller, by adjusting the laser power in real time, could successfully maintain the melt pool width and produce a more uniform and finer microstructure as compared to the sample with a constant laser power.
Vorheriger Artikel Parameter analysis of thermal behavior during laser melting of Ti-6Al-4V alloy powder
Nächster Artikel Comparing CW-GMAW in direct current electrode positive (DCEP) and direct current electrode negative (DCEN)

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Metadaten
Titel
Closed loop control of melt pool width in robotized laser powder–directed energy deposition process
verfasst von
Meysam Akbari
Radovan Kovacevic
Publikationsdatum
31.07.2019
Verlag
Springer London
Erschienen in
The International Journal of Advanced Manufacturing Technology / Ausgabe 5-8/2019
Print ISSN: 0268-3768
Elektronische ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-019-04195-y

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