Details
| Original language | English |
|---|---|
| Journal | Steel research international |
| Early online date | 6 Feb 2025 |
| Publication status | E-pub ahead of print - 6 Feb 2025 |
Abstract
This study investigates the optimization of process parameters in laser powder bed fusion (LPBF) to minimize defects caused by insufficient melting and vaporization of metal powder. The research employs a simulation method that incorporates vaporization effects to tackle a multiobjective optimization problem in selective laser melting (SLM), utilizing the Taguchi method for systematic analysis. Validation of the simulation approach is conducted by comparing it with experimental results from Verhaeghe et al. (Acta Mater. 2009) revealing a strong correlation between simulated and experimental data. This underscores the effectiveness of the method and highlights the significance of vaporization in SLM processes. The optimization process focuses on enhancing melting efficiency while minimizing vaporization by adjusting critical parameters such as laser power, scanning speed, and laser spot radius. Results indicate that laser power has a significant impact on insufficient melting, while scan speed is more critical for reducing vaporization. Furthermore, the study explores various weight scenarios for the combined objective function, concluding that equal weight factors for unmelted and vaporized elements do not guarantee a reduction in total defects. This research provides essential insights into the complex interactions within LPBF, emphasizing the need for careful parameter optimization to improve manufacturing quality.
Keywords
- evaporation, lack of fusing, laser powder bed fusions, modified Taguchi methods, multiobjective optimizations
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: Steel research international, 06.02.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A Multiobjective Optimization of Laser Powder Bed Fusion Process Parameters to Reduce Defects by Modified Taguchi Method
AU - Kazemi, Zahra
AU - Nayebi, Ali
AU - Rokhgireh, Hojjatollah
AU - Soleimani, Meisam
N1 - Publisher Copyright: © 2025 Wiley-VCH GmbH.
PY - 2025/2/6
Y1 - 2025/2/6
N2 - This study investigates the optimization of process parameters in laser powder bed fusion (LPBF) to minimize defects caused by insufficient melting and vaporization of metal powder. The research employs a simulation method that incorporates vaporization effects to tackle a multiobjective optimization problem in selective laser melting (SLM), utilizing the Taguchi method for systematic analysis. Validation of the simulation approach is conducted by comparing it with experimental results from Verhaeghe et al. (Acta Mater. 2009) revealing a strong correlation between simulated and experimental data. This underscores the effectiveness of the method and highlights the significance of vaporization in SLM processes. The optimization process focuses on enhancing melting efficiency while minimizing vaporization by adjusting critical parameters such as laser power, scanning speed, and laser spot radius. Results indicate that laser power has a significant impact on insufficient melting, while scan speed is more critical for reducing vaporization. Furthermore, the study explores various weight scenarios for the combined objective function, concluding that equal weight factors for unmelted and vaporized elements do not guarantee a reduction in total defects. This research provides essential insights into the complex interactions within LPBF, emphasizing the need for careful parameter optimization to improve manufacturing quality.
AB - This study investigates the optimization of process parameters in laser powder bed fusion (LPBF) to minimize defects caused by insufficient melting and vaporization of metal powder. The research employs a simulation method that incorporates vaporization effects to tackle a multiobjective optimization problem in selective laser melting (SLM), utilizing the Taguchi method for systematic analysis. Validation of the simulation approach is conducted by comparing it with experimental results from Verhaeghe et al. (Acta Mater. 2009) revealing a strong correlation between simulated and experimental data. This underscores the effectiveness of the method and highlights the significance of vaporization in SLM processes. The optimization process focuses on enhancing melting efficiency while minimizing vaporization by adjusting critical parameters such as laser power, scanning speed, and laser spot radius. Results indicate that laser power has a significant impact on insufficient melting, while scan speed is more critical for reducing vaporization. Furthermore, the study explores various weight scenarios for the combined objective function, concluding that equal weight factors for unmelted and vaporized elements do not guarantee a reduction in total defects. This research provides essential insights into the complex interactions within LPBF, emphasizing the need for careful parameter optimization to improve manufacturing quality.
KW - evaporation
KW - lack of fusing
KW - laser powder bed fusions
KW - modified Taguchi methods
KW - multiobjective optimizations
UR - http://www.scopus.com/inward/record.url?scp=85216989144&partnerID=8YFLogxK
U2 - 10.1002/srin.202400628
DO - 10.1002/srin.202400628
M3 - Article
AN - SCOPUS:85216989144
JO - Steel research international
JF - Steel research international
SN - 1611-3683
ER -