About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
|
Presentation Title |
In-situ Monitoring of the EBM Process: From Powder Bed Homogeneity to Thermal Signatures |
Author(s) |
Marco Grasso, Bianca Maria Colosimo |
On-Site Speaker (Planned) |
Marco Grasso |
Abstract Scope |
The availability of in-situ monitoring solutions for Electron Beam Melting (EBM) is still quite limited compared to the wide number of studies and industrial developments devoted to laser-based additive manufacturing. Nevertheless, different quantities can be measured and used to determine the stability of the melting process and detect the onset of defects. This study presents different in-situ monitoring opportunities in EBM, ranging from powder bed homogeneity analysis to in-line characterization of the thermal history of the process. The presented real case studies refer to the production of Ti6Al4V parts using an industrial EBM system equipped with machine vision in the visible and in the infrared range. The results show that, depending on the sensing method and the data analysis techniques, various kinds of anomalies can be detected, enabling the use of in-situ monitoring methodologies to anticipate the detection of defects and to make process and product qualification procedures more efficient. |