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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing of Metals: Equipment, Instrumentation and In-Situ Process Monitoring
Presentation Title In-situ Sensing in Processing Parameter Development for Bismuth Telluride Bulk Part Fabrication Using Laser Powder Bed Fusion
Author(s) Kelly Rickert, Joy Gockel, Sabrina D'Alesandro, Saniya LeBlanc, Tanvi Banerjee, Alexander Groeger, Joe Walker, John Middendorf
On-Site Speaker (Planned) Kelly Rickert
Abstract Scope Laser powder bed fusion (LPBF) additive manufacturing (AM) is a promising manufacturing technique because it can create complex components in one process with minimal waste. This study investigates process parameter development for bismuth telluride, a functional material for solid-state thermoelectric energy conversion, using in-situ process monitoring with multiple sensors during the LPBF AM process. The influence of the processing parameters (laser power, laser speed and hatch spacing) is explored by performing basic experiments on a bismuth telluride substrate, including single bead laser tracks and single area laser scans. Multi-sensor in-situ process monitoring data is collected during the printing process and the sensor data is analyzed to determine relevant features that relate to the melt pool size and material characteristics such as porosity. The results of this work will connect in-situ sensor response to material characteristics and will inform process design methodologies to accelerate the development for AM of bismuth telluride.
Proceedings Inclusion? Undecided


Advancing Measurement Science of Laser Powder Bed Fusion (LPBF) Process Monitoring Applying Thermal Imaging
Combined In-situ Monitoring of Meltpool, Powder Layer, and Part Topography for Laser Powder Bed Fusion (LPBF) Based Metal Additive Manufacturing
Defect Recognition and Improvement in Ti-6Al-4V Fabrication by In-situ Monitoring and Feedback System of Directed Energy Deposition LAMDA 200
Functionally Graded Material Development by Leveraging Ultrasonic Grain Refinement in Additive Manufactured Nickel 718
High-speed Observations and Quantification of Spatter in Laser Powder Bed Fusion
In-situ Sensing in Processing Parameter Development for Bismuth Telluride Bulk Part Fabrication Using Laser Powder Bed Fusion
Innovative and Practical Approaches to Laser Powder Bed Fusion Sensing and Process Enhancement
Laser Powder Bed Fusion of Tall Thin Walled Structures: Dimensional Inaccuracy Due to Local Buckling, and In Situ Infrared Imaging for Early Failure Detection
Materials Characterization of Anomalies Identified Through In-situ Process Monitoring Data Analytics
Melt Pool Level Flaw Detection in Laser Hot Wire Additive Manufacturing Using a Trained Convolutional Long Short Term Memory Autoencoder
Physics Guided Machine Learning DED Melt Pool Width Prediction
Plenoptic Imaging for In-situ PIV and Melt Pool Monitoring in Laser Directed Energy Deposition
Studying the Effect of Inert Gases on Thermal Behavior in Laser Powder Bed Fusion Using In Situ Monitoring and Similarity Analysis
Ultrasonics for Monitoring Melt Pool Dynamics and Solidification

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