In-Situ Non-Destructive Evaluation of Ultrasonic Additive Manufactured Components

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Date

2016

Authors

Nadimpalli, Venkata Karthik
Na, Jeong K.
Bruner, Darren T.
King, Brenna A.
Yang, Li
Stucker, Brent E.

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Publisher

University of Texas at Austin

Abstract

In-situ monitoring of Ultrasonic Additive Manufacturing (UAM) process is crucial for producing parts suitable for load-bearing structural applications. Due to the nature of UAM process, it is necessary to monitor the entire build as opposed to only the just bonded layer. For this purpose, an ultrasonic transducer is used in this study to perform in-situ nondestructive evaluation (NDE) of the entire build after the addition of each new layer. This has been successfully implemented first on a manually operated research UAM machine and then applied on a fully automated commercial grade UAM machine. The practical applications of such in-situ measurements for ensuring defect-free part fabrication through closed-loop control of the UAM process control is shown to be possible from the results of this work.

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