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https://doi.org/10.21256/zhaw-29348| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion |
| Autor/-in: | Kavas, Barış Balta, Efe C. Tucker, Michael Rupenyan, Alisa Lygeros, John Bambach, Markus |
| et. al: | No |
| DOI: | 10.1016/j.addma.2023.103847 10.21256/zhaw-29348 |
| Erschienen in: | Additive Manufacturing |
| Band(Heft): | 78 |
| Heft: | 103847 |
| Erscheinungsdatum: | Okt-2023 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 2214-7810 2214-8604 |
| Sprache: | Englisch |
| Schlagwörter: | Laser powder bed fusion; Closed-loop feedback control; Layer-to-layer temperature control; Interlayer temperature stabilization |
| Fachgebiet (DDC): | 670: Industrielle und handwerkliche Fertigung |
| Zusammenfassung: | In laser powder bed fusion (LPBF), part quality and process conditions are highly dependent on the interlayer temperature (ILT) of the exposure surface of printed parts. State-of-the-art closed-loop control applications do not stabilize ILT, which has a decisive influence on the resulting part properties. This paper presents a closed-loop control strategy for LPBF that stabilizes the ILT. The thermal balance is defined with respect to exposure area change in overhanging parts and a control strategy is proposed to maintain the thermal balance by actuating energy input. The proposed control strategy uses an off-axis thermal camera for interlayer temperature acquisition to update the laser power layer to layer. An online optimization-based controller that leverages the repetitive nature of the LPBF process is implemented for the task. The developed controller is validated by experiments with different overhanging geometries. Successful ILT stabilization for various overhanging angles shows the robustness of the controller for an extended number of layers. However, modulation of laser power alone is shown to be insufficient to maintain the ILT within the stable processing window due to excessive heat accumulation in the long term. Nevertheless, the results of this study demonstrate the feasibility of ILT stabilization via of closed-loop control in LPBF and the potential for significant improvements in stabilizing the properties of the printed parts. |
| Weitere Angaben: | The preprint version of this article was published on SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4496744. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/29348 |
| Volltext Version: | Akzeptierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY-NC-ND 4.0: Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International |
| Gesperrt bis: | 2025-11-08 |
| Departement: | School of Engineering |
| Organisationseinheit: | Centre for Artificial Intelligence (CAI) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2023_Kavas-etal_L2L-SLM-Temperature-Control_AM.pdf Bis 2025-11-08 | Accepted Version | 4.62 MB | Adobe PDF | Öffnen/Anzeigen |
Zur Langanzeige
Kavas, B., Balta, E. C., Tucker, M., Rupenyan, A., Lygeros, J., & Bambach, M. (2023). Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion. Additive Manufacturing, 78(103847). https://doi.org/10.1016/j.addma.2023.103847
Kavas, B. et al. (2023) ‘Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion’, Additive Manufacturing, 78(103847). Available at: https://doi.org/10.1016/j.addma.2023.103847.
B. Kavas, E. C. Balta, M. Tucker, A. Rupenyan, J. Lygeros, and M. Bambach, “Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion,” Additive Manufacturing, vol. 78, no. 103847, Oct. 2023, doi: 10.1016/j.addma.2023.103847.
KAVAS, Barış, Efe C. BALTA, Michael TUCKER, Alisa RUPENYAN, John LYGEROS und Markus BAMBACH, 2023. Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion. Additive Manufacturing. Oktober 2023. Bd. 78, Nr. 103847. DOI 10.1016/j.addma.2023.103847
Kavas, Barış, Efe C. Balta, Michael Tucker, Alisa Rupenyan, John Lygeros, and Markus Bambach. 2023. “Layer-to-Layer Closed-Loop Feedback Control Application for Inter-Layer Temperature Stabilization in Laser Powder Bed Fusion.” Additive Manufacturing 78 (103847). https://doi.org/10.1016/j.addma.2023.103847.
Kavas, Barış, et al. “Layer-to-Layer Closed-Loop Feedback Control Application for Inter-Layer Temperature Stabilization in Laser Powder Bed Fusion.” Additive Manufacturing, vol. 78, no. 103847, Oct. 2023, https://doi.org/10.1016/j.addma.2023.103847.
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