| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Thermal Imaging for Wire Arc Additive Manufacturing Using an Off-the-shelf Color Camera |
| Author(s) |
Gala C. Solis, Alex Myers, Guadalupe Quirarte, Mikhail Khrenov, Sneha Narra, Jonathan Malen |
| On-Site Speaker (Planned) |
Gala C. Solis |
| Abstract Scope |
Process modeling and process monitoring are key to the adoption of additive manufacturing. For this purpose, imaging methods have attempted to measure weld pool temperature fields in wire-arc additive manufacturing (WAAM). A major challenge in estimating temperatures from monochromatic or infrared cameras is the need-to-know spectral emissivity. A novel two-color method is used to reduce sensitivity to the spectral emissivity by taking the signal ratio from two channels of an RGB color camera and correlating with the temperature predicted by Planck’s law, given the spectral sensitivity of the camera. Images are captured with varying exposure times and apertures to generate a full thermal field, along with a set of bandpass filters to reduce interference from plasma arc emission. These in-situ measurements can be used for model validation/calibration and flagging weld pool anomalies, thus furthering process parameter development, optimization, and monitoring. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |