CSIRO to hold 'Digital Twin' symposium for metal AM
The CSIRO will be holding a one-day symposium in Melbourne on 4 July titled the ‘Towards a True Digital Twin’ Symposium. The symposium will bring together international leaders to answer critical questions, including:
- What will such a digital twin look like?
- What are our current capabilities?
- What do we need to do to bridge the gap?
Metallic additive manufacturing involves layer-by-layer production of components, typically by melting metal powders using a laser or electron beam. Additive manufacturing has many attractive features, eg, custom-designed components can be produced with geometries not achievable by conventional methods. However, for AM to reach its full potential, a realistic virtual representation of the complete process is required. Such a ‘digital twin’ will accelerate process design and optimisation, and form a key part of process certification and component qualification.
The development of a digital twin presents huge challenges. Not only do accurate and fast computational sub-models of the complex physical and metallurgical processes involved (powder-bed raking, heat transfer and flow in the molten pool, microstructure formation, residual stress development) have to be produced and validated, but they have to be tightly integrated. This is a critical obstacle since the sub-models use different computational approaches and treat vastly different scales, from powder (~50 micrometres) to part (up to metres).
The symposium will bring together leading experts in a diverse range of relevant fields including metallic additive manufacturing, computational modelling, multiscale techniques, structure-property relations, machine learning and artificial intelligence, and digital twins of industrial processes.
Through keynote lectures, poster presentations and facilitated discussion sessions, the symposium aims to:
- define the requirements for a true digital twin of the additive manufacturing process;
- identify the main barriers to developing such software, including those involved in linking sub-models across scales;
- explore the physical, metallurgical and computational approaches to overcome these barriers;
- set out a roadmap for the development of a digital twin.
Keynote speakers include:
- Tarasankar DebRoy, Penn State University, USA
- Dongdong Gu, Nanjing University of Aeronautics and Astronautics, China
- Leila Ladani, University of Texas at Arlington, USA
- Ibo Matthews, Lawrence Livermore National Laboratory, USA
- Chris Vains, Siemens Australia
The symposium is directed towards researchers, managers, students and others from academia, government and industry.
Early-career researchers are especially encouraged to attend; the symposium will include a networking session, and a large number of travel grants for early-career researchers are being offered.
The ‘Digital Twin’ symposium will follow APICAM 2019 (Asia-Pacific International Conference on Additive Manufacturing), to be held in Melbourne from 31 June to 3 July.
The cost is $150 for full registration and $75 for early-career researchers. The symposium will be held at the Woodward Conference Centre, Main lecture room, 10th floor, University of Melbourne Law School (Building 106), Carlton.
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