Advanced laser irradiation strategies for tailoring temperature profiles for laser-based powder bed fusion (PBF-LB/P) of highly absorbing polymers

Medvedev V, Kopp SP, Roth S (2023)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2023

Event location: München DE

URI: https://www.wlt.de/sites/default/files/2023-09/Contribution_340.pdf

Open Access Link: https://www.wlt.de/sites/default/files/2023-09/Contribution_340.pdf

Abstract

Additively manufactured parts consisting of polymer powders blended with carbon black have increased protection against ultraviolet radiation and thus are beneficial for applications involving intensive exposure to sunlight. However, this powder blends are challenging to be processed in laser-based powder bed fusion of polymers (PBF-LB/P) due to their high absorptivity of infrared radiation. Thus, precisely tailoring the energy input provided by a CO2-laser is crucial for enhancing process stability for processing highly absorptive polymers. Adapting the laser energy input by applying advanced irradiation strategies offers the possibility to tailor the temperature profiles during PBF-LB/P process. In this study, the effect of advanced laser irradiation strategies with pixel-encoded energy densities on the adaption of the temperature profile of polymer powders blended with carbon black is investigated. Finally, irradiation patterns are defined to achieve spatially tailored temperature profiles across the powder layer for demonstration the capabilities of the developed scanning strategy.

Authors with CRIS profile

Vadim Medvedev Lehrstuhl für Photonische Technologien (LPT) Sebastian-Paul Kopp Lehrstuhl für Photonische Technologien (LPT)

Additional Organisation(s)

Sonderforschungsbereich 814/3 Additive Fertigung Lehrstuhl für Photonische Technologien (LPT) Erlangen Graduate School in Advanced Optical Technologies (SAOT)

Related research project(s)

Efficient additive manufacturing of multi-material parts (B6) (SFB 814 (B6)) CRC 814 - Additive Manufacturing (SFB 814) July 1, 2011 - June 30, 2023

Involved external institutions

Bayerisches Laserzentrum gemeinnützige Forschungsgesellschaft mbH (BLZ) DE Germany (DE)

How to cite

APA:

Medvedev, V., Kopp, S.-P., & Roth, S. (2023). Advanced laser irradiation strategies for tailoring temperature profiles for laser-based powder bed fusion (PBF-LB/P) of highly absorbing polymers. In Proceedings of the Lasers in Manufacturing Conference 2023. München, DE.

MLA:

Medvedev, Vadim, Sebastian-Paul Kopp, and Stephan Roth. "Advanced laser irradiation strategies for tailoring temperature profiles for laser-based powder bed fusion (PBF-LB/P) of highly absorbing polymers." Proceedings of the Lasers in Manufacturing Conference 2023, München 2023.

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