|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Metals: Equipment, Instrumentation and In-Situ Process Monitoring
||Ultrasonics for Monitoring Melt Pool Dynamics and Solidification
||Christopher Kube, Jared Gillespie, Tao Sun, Cang Zhao, Niranjan Parab, Anthony Rollett
|On-Site Speaker (Planned)
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.