About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
High Speed Thermal Imaging and Measurements of Thermal Conductivity at Extreme Temperatures |
| Author(s) |
Jonathan Malen, Craig Weeks, Gala Solis, Hao-Yuan Cheng, Sneha Narra, Jack Beuth |
| On-Site Speaker (Planned) |
Jonathan Malen |
| Abstract Scope |
High-speed thermal imaging provides a powerful pathway to quantify heat transfer and solidification dynamics in extreme environments relevant to additive manufacturing and high-temperature materials. In this work, we present optical methods that combine two-color ratiometric thermography with high-speed imaging to measure temperature fields, cooling rates, and thermal conductivity at temperatures approaching 4000 K. A single-camera approach enables simultaneous extraction of thermal gradients and melt pool morphology by separating spectral channels for temperature measurement and blue-laser illumination for phase contrast imaging . Cooling rates are determined from measured gradients and melt pool velocities, revealing strong dependence on process conditions. Complementary experiments use stationary laser heating and radial temperature fitting to extract temperature-dependent thermal conductivity, demonstrating applicability to both conductive and insulating materials . Together, these techniques provide a unified framework for in-situ, high-speed thermal characterization, offering new insight into heat transport and solidification behavior in extreme temperature manufacturing processes. |