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Meeting MS&T23: Materials Science & Technology
Symposium Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
Presentation Title Robust Detection of L-PBF Process Anomalies Using High-speed On-axis Melt Pool Pyrometry
Author(s) Brendan P. Croom, Steven Storck, Vincent Pagan, Mary Daffron, Ari Lax, Robert Mueller
On-Site Speaker (Planned) Brendan P. Croom
Abstract Scope In the Laser Powder Bed Fusion (L-PBF) additive manufacturing process, many types of defects can form that affect the build quality, mechanical integrity, and qualification of real components. In this talk, we present the in situ defect detection capability of a recently developed multi-channel, high-speed, on-axis pyrometer. The pyrometer offers both high spatial and temporal resolution (~100 microns, and 100+ kHz), and is shown to robustly detect process changes that affect the thermal emissions of the melt pool. This talk demonstrates the sensor’s ability to detect build anomalies such as chemical contamination, laser parameter drift, build pauses, and powder short feeding. Future applications of this sensor are also discussed.


An Efficiency Study of Multi-Mode Laser Profiles
Customized Glove Box for In Situ Monitoring of Laser Directed Energy Deposition
Exploring a Supervisory Control System Using ROS2 and IoT Sensors
Fill Impact Welding: Additive Manufacturing through Ballistic Impact of Metallic Sheets
Implementing Statistical Process Control in Laser Powder Bed Fusion Metal Additive Manufacturing
In-situ Pyrometric Sensing for Real-time AM Process Monitoring and Control
Investigating the Effect of Part Geometry on Microstructure for Laser Powder Bed Fusion of Bismuth Telluride using In-Situ Process Monitoring
Melt Pool Scale Process Monitoring for Laser Hot Wire Additive Directed Energy Deposition
Quantification of Build Interruptions through In-Process Monitoring and Mechanical Test
Real Time Observations of In-Situ Alloying Molybdenum and Ti-6Al-4V in Laser Directed Energy Deposition Additive Manufacturing
Reinforcement Learning for In-situ Melt Pool Control during Laser Powder Bed Fusion
Robust Detection of L-PBF Process Anomalies Using High-speed On-axis Melt Pool Pyrometry
Two-color Melt Pool Thermal Imaging on Powder-blown Laser-DED to Advance Understanding of Melt Pool Thermal-fluid Physics

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