| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Control of High-temperature Drop-on-demand Metal Jetting through Numerical Modelling and Experimentation |
| Author(s) |
Negar Gilani, Nesma Aboulkhair, Marco Simonelli, Ian Ashcroft , Richard Hague |
| On-Site Speaker (Planned) |
Negar Gilani |
| Abstract Scope |
Metal jetting entails dispensing and depositing molten metal droplets at precise locations. This opens opportunities for additive manufacturing of intricate metallic components. Numerous applications such as flexible circuits, advanced electronic components and biotechnologies are considered using the novel technique introduced here, MetalJet. It has the capability of producing metallic micro-droplets (~70 µm in diameter) with melting points up to 2000 °C at frequencies up to 2 kHz. Here we study the deposition of Tin droplets on various substrates through computational modelling and experimentation. Tin is chosen since it provides the opportunity of investigating wide droplet temperature ranges. The experimentation consists of printing and characterizing 3D objects while a 3D sequentially coupled thermomechanical finite element model is developed for the modelling. These provide insights into the fundamental physical phenomena of the MetalJet process which are unknown to date, including inter-droplets bonding and adhesion to the substrate, residual stress build-up and deformations. |