About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
In-situ Microwave Tomography for Temperature Monitoring during Powder Bed Fusion of Polymers |
Author(s) |
Francesco Sillani, Samuel Poretti, Tommaso Pagani, Fatlind Hajdaj, Andrea Randazzo, Manfred Schmid, Konrad Wegener |
On-Site Speaker (Planned) |
Francesco Sillani |
Abstract Scope |
In polymer powder bed fusion, hundreds of parts can be produced in a few hours, but strict quality requirements may lead to costly post-built quality assurance analyses, which can result in high rejection rates. Temperature monitoring throughout the process is essential to quantify the crystallization behavior of the polymer parts, but the direct reading of the temperature is hindered by the powder. In this work, an innovative temperature monitoring technology based on microwave tomography is used to assess the part cooldown history in an industry-grade EOS P110 machine. Thus, relative and absolute readings of the temperature field can be carried out even for parts surrounded by powder, and this will allow the development of a new generation of smart powder bed fusion of polymers machines that can better sense and control the entire process, including the cooldown phase, which is often neglected but has the highest impact on final performances. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |