Download file (3.71MB)
Download as zip (3.04MB)

コレクション

引用

説明:

We present results from airborne acoustic emission (AE) monitoring during the Laser Powder Bed Fusion (LPBF) process. A distinct acoustic signature was consistently observed alongside keyhole formation and plume instability, with its frequency inversely proportional to the depth of the melt pool. The effects of laser scanning speed, laser power, material (Ti-6Al-4V, S316L, Inconel625), and laser spot size on AE signals were systematically investigated. A resurgence of high-frequency components for deep melt pools was found to coincide with the onset of keyhole-induced porosity. This acoustic signature is attributed to fluctuations at the liquid–vapor interface, which drive oscillations in the vaporization plume. Multi-track experiments further demonstrated the potential of AE monitoring for real-time fault detection and closed-loop process control in LPBF.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Acoustic emission, Additive manufacturing, Keyhole

刊行年月日: 2025-12-05

出版者: Springer Science and Business Media LLC

掲載誌:

• Scientific Reports (ISSN: 20452322) vol. 15 issue. 1 43243

研究助成金:

• Council for Science, Technology and Innovation
• Cross-ministerial Strategic Innovation Promotion Program
• Japan Science and Technology Agency
• Japan Society for the Promotion of Science KAKENHI 24H00982

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41598-025-27232-1

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-12-10 08:30:07 +0900

MDRでの公開時刻: 2025-12-10 08:23:55 +0900