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Elastic constants of Ultrasonic Additive Manufactured Al 3003-H18
D R Foster1, M J Dapino, S S Babu
1Department of Materials Science and Engineering, Welding Engineering Program, The Ohio State University, Columbus, OH 43210, USA. foster.373@osu.edu
Ultrasonics
|September 4, 2012
Summary
Ultrasonic Additive Manufacturing (UAM) creates parts with voids, reducing elastic properties. Very High Power UAM significantly improves these properties, approaching bulk aluminum values.
Area of Science:
- Materials Science
- Manufacturing Engineering
- Non-destructive Testing
Background:
- Ultrasonic Additive Manufacturing (UAM) bonds thin metal foils layer-by-layer.
- Process variables require optimization to minimize interfacial voids.
- Void reduction is critical for achieving desired material properties.
Purpose of the Study:
- To evaluate the quality of bonds in UAM parts.
- To assess the impact of interfacial voids on elastic properties.
- To compare standard UAM with Very High Power UAM (VHP UAM).
Main Methods:
- Ultrasonic testing was employed to measure elastic constants.
- Elastic properties of UAM builds were analyzed.
- Comparison with control samples and bulk aluminum was performed.
Main Results:
- UAM parts exhibited orthotropic material symmetry.
- Elastic constants were reduced by up to 48% due to interfacial voids.
- VHP UAM showed significant improvement in elastic properties.
Conclusions:
- Interfacial voids in UAM negatively impact elastic constants.
- Elastic constants in UAM are anisotropic.
- VHP UAM demonstrates superior performance in enhancing elastic properties.
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