About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
|
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
The Measurement of Orientation and Elasticity by Spatially Resolved Acoustic Spectroscopy (SRAS) |
Author(s) |
Richard J Smith, Paul Dryburgh, Wenqi Li, Rikesh Patel, Matt Clark |
On-Site Speaker (Planned) |
Richard J Smith |
Abstract Scope |
Spatially resolved acoustic spectroscopy (SRAS) is an acoustic microscopy technique, that can rapidly image the microstructure and measure the crystallographic orientation of grains of material. This talk will begin by demonstrating the ability to map the microstructure in L-PBF and wire-arc specimens, along with inferring the crystallographic texture and build information. Traditionally, elasticity measurements are challenging to undertake, requiring a single crystal of known orientation. This is incompatible with the ability to create spatially-varying microstructures and alloy in-situ inherent to AM. This talk will proceed to demonstrate that by combining the measurement of the acoustic velocity from multiple grains from SRAS, it is possible to determine both the elastic constants of the sample and the crystallographic orientation of each grain for the first time. The talk will conclude by discussing the outlook for elasticity measurements in AM, covering the challenges and outlining the future steps towards realising real-time measurements. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |