| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing:
Incorporating Breakthrough Functionalities for Building Large Scale Components
|
| Presentation Title |
Melt Pool Thermal Imaging on Wire-Arc Additive Manufacturing Using the Two-Color Method with a Commercial Color Camera |
| Author(s) |
Gala C. Solis, Alexander J Myers, Guadalupe Quirarte, Barnali Mondal, Mikhail Khrenov, Sneha P Narra, Jonathan A Malen |
| On-Site Speaker (Planned) |
Gala C. Solis |
| Abstract Scope |
Advanced process monitoring and model validation are key to reducing defects in additively manufactured parts. For this purpose, imaging methods have been employed to measure melt pool temperature fields in wire-arc additive manufacturing (WAAM). A major challenge while estimating temperatures from current imaging methods is the need for spectral emissivity. In this work, we use the two-color method with a commercial color camera to obtain accurate temperature measurements by reducing sensitivity to the spectral emissivity within the melt pool. Images are captured with varying exposure times and bandpass filters to generate a full thermal field of the melt pool and to reduce interference from plasma arc emission. These temperature measurements evaluate cooling rates on different regions of the melt pool and are correlated to mechanical properties such as hardness. They can then be used for in-situ process monitoring and model calibration/validation to further inform process parameter development and optimization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Process Technology |