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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing of Metals: Equipment, Instrumentation and In-Situ Process Monitoring
Presentation Title Ultrasonics for Monitoring Melt Pool Dynamics and Solidification
Author(s) Christopher Kube, Jared Gillespie, Tao Sun, Cang Zhao, Niranjan Parab, Anthony Rollett
On-Site Speaker (Planned) Christopher Kube
Abstract Scope In metallic additive manufacturing (AM), melt pools and subsequent solidification strongly influence the final part quality. Thus, understanding melt pool dynamics relative to process parameters pushes manufacturing toward higher quality and better performing parts than currently possible. Modeling and in situ monitoring of melt pools are vital research activities for improved understanding. This presentation reports progress on the development of an ultrasonic technique for melt pool monitoring. As ultrasound can propagate within solids, the technique displays promise in providing in situ volumetric information, which can compliment currently used techniques for observing the melt pool from above. In situ simultaneous ultrasound/high-speed X-ray imaging on conduction and keyhole mode melt pools in Al6061 will be reported and discussed. The X-ray comparison provides important ground truth for ultrasound signal interpretation and aids in the planned transition of the ultrasonic technique into AM processes.
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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