Airborne acoustic emission and scan speed predict the linear density of keyhole pores in laser powder bed fusion with R² > 0.8, and can trace the keyhole-to-stable melting boundary on the power-velocity process map.
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Airborne acoustic emission enables sub-scanline keyhole porosity quantification and effective process characterization for metallic laser powder bed fusion
Airborne acoustic emission and scan speed predict the linear density of keyhole pores in laser powder bed fusion with R² > 0.8, and can trace the keyhole-to-stable melting boundary on the power-velocity process map.