[P] P231~P243 Materials Processing

[P242] In Situ Acoustic Emission Evaluation of Melt Pool Depth and Pore Formation during the LPBF Process

○Jiawei Yu¹, Takayuki Shiraiwa¹, Kaita Ito², Fabien Briffod² (1. The University of Tokyo, 2. National Institute of Materials Science)

Keywords:

Laser Powder Bed Fusion,In-situ monitoring,Acoustic Emission

This study evaluates pore formation and melt pool depth in Ti-6Al-4V LPBF using in-situ AE monitoring. AE signals were decomposed by VMD, and IMF features were compared with XCT and metallographic references. IMF RMS reflected pore counts, while IMF kurtosis indicated melt pool depth.