About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
An In-situ Eddy Current Diagnostic for Monitoring Sub-surface Temperature During Metal Additive Manufacturing |
Author(s) |
Saptarshi Mukherjee, Ethan Rosenberg, Edward Benavidez, Peng Lei, Yiming Deng, Joseph W. Tringe, David Stobbe |
On-Site Speaker (Planned) |
Saptarshi Mukherjee |
Abstract Scope |
With the increase in laser powder bed fusion (LPBF) additive manufacturing applications, an in-situ sub-surface temperature monitoring diagnostic is critical to determine the thermal stress distribution of a metal AM component. Current temperature monitoring diagnostics provides limited information on sub-surface melt pool temperatures. Here we develop an eddy current (EC) diagnostic that can monitor sub-surface temperature distribution during a thermal heating process, by detection of sub-surface induced eddy currents that are perturbed due to the material’s electrical conductivity variation from temperature fluctuations. A commercial EC system is integrated in a laser-based system and detects temperature changes from laser heating initially followed by late time cooling. These experiments also help benchmark EC signals to temperature, as we transition the EC experimental system to an in-situ sub-surface temperature monitoring diagnostic for LPBF. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |