About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Towards Inline Material Microstructure Imaging using Spatially Resolved Acoustic Spectroscopy (SRAS) |
Author(s) |
Wenqi Li, Rikesh Patel, Rafael Fuentes-Dominguez, Paul Dryburgh, Richard J Smith, Matt Clark |
On-Site Speaker (Planned) |
Wenqi Li |
Abstract Scope |
Monitoring of material characteristics is the next step need towards the realisation of truly autonomous manufacturing. For additive manufacturing the issue of structural defects has been minimised through intense research into process control and traditional testing regimes, however the ability to measure the microstructure is currently limited to offline and destructive measurement methods. In this paper, we present our work towards integrating the laser ultrasound characterisation technique spatially resolved acoustic spectroscopy (SRAS) in-situ with the manufacturing process. SRAS is an established lab-based tool that is capable of imaging material microstructure, however there are significant challenges in bringing this technique to workshop environments, including operating on rough surfaces, high-speed acquisition and image resolution. We present our work to date on concepts on integration into an additive manufacturing (AM) environment, microstructural images made on as-deposited samples made using a variety of AM techniques, and solutions to instrumentation to operate on rough surfaces. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |