年度	2024
全部作者	黃瑞宇,Ruei-Yu Huang, Jun-Qi Lu, Chung-Wei Cheng, Mi-Ching Tsai, An-Chen Lee
作者類別	First Author
論文名稱	Multi-data-driven model-based control to improve the accuracy of overhang structures in laser powder bed fusion
期刊名稱	Optics & Laser Technology
卷數	171
頁碼	110398-110398
期刊等級	SCI
總頁數	9
發表日期	2024-04-01
摘要	The additive manufacturing process of laser powder bed fusion (LPBF) has gained significant attention due to its potential to fabricate complex structures. In this paper, we propose an open-loop multi-data-driven model-based control (MMC) architecture to improve the accuracy and quality of overhang structures fabricated through LPBF. Overhang structures are particularly challenging due to thermal and structural complexities. Traditional methods often require support structures, which can increase costs and reduce efficiency. Our MMC architecture integrates data-driven models with real-time monitoring using photodiode measurements. The proposed MMC architecture consists of energy density modeling, infrared correction, and reference voltage modeling. The energy density model is established for both solid substrates and overhang structures to optimize laser power, while the infrared correction model compensates for measurement errors caused by melt pool position variations. The reference voltage model enables real-time process monitoring. Experimental results demonstrate the effectiveness of the proposed MMC architecture in producing high-quality overhang structures without the need for support materials. The architecture offers a significant advancement in LPBF process control by reducing 49.9% of residual material of overhang structures, enabling the fabrication of intricate geometries with improved accuracy and efficiency.
語言	中文
參考連結	https://doi.org/10.1016/j.optlastec.2023.110398
所屬計畫案	MOST 111-2221-E-A49-158- MY3, and MOST 111-2218-E-006-013