| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
|
| 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, Mikhail Khrenov, Sneha P Narra, Jonathan A Malen |
| On-Site Speaker (Planned) |
Gala C. Solis |
| Abstract Scope |
Advanced process monitoring and model validation are crucial for minimizing defects in additively manufactured parts, particularly in wire-arc additive manufacturing (WAAM). Current imaging methods aim to measure melt pool temperature fields, but face challenges due to the unknown spectral emissivity. In this study, we propose a two-color approach using a commercial color camera to enhance temperature accuracy by mitigating spectral emissivity sensitivity. This is done by analyzing signal ratios from two RGB channels and correlating them with temperatures predicted by Planck’s law, given the camera's spectral sensitivity. Comprehensive thermal field data is captured with varying exposure times while minimizing plasma arc emission interference with a selected set of bandpass filters. These refined measurements facilitate in-situ process monitoring and model calibration/validation, aiding in the development and optimization of process parameters for enhanced manufacturing quality. |