| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-120: Non-Contact Method to Measure Thermal Conductivity: A Comparative Study of Additive Manufactured SS-316L |
| Author(s) |
Jessica Reyes Holguin, Hunter Schonfeld, Bryan Kaehr, Jeffrey Braun, Saman Zare, Patrick Hopkins |
| On-Site Speaker (Planned) |
Jessica Reyes Holguin |
| Abstract Scope |
Additive manufacturing (AM) offers the advantage of producing complex, lightweight parts but introduces uncertainties in thermal properties. Traditional contact-based thermal conductivity methods face challenges, including sample preparation, limited temperature ranges, and difficulties with porous materials. This study uses a non-contact technique to evaluate the thermal conductivity of SS316L fabricated via AM and compare the results with those of parts produced through traditional machining techniques. Using a continuous wave (cw) green laser for heating and an infrared camera for temperature monitoring, a one-dimensional steady-state mathematical model calculates spatial thermal conductivity. This technique proves particularly effective for evaluating porous materials and identifying defects introduced during AM. Results show a 20% reduction in thermal conductivity for AM SS-316L dense parts compared to bulk machined samples at 0.50 W laser power, and a reduction of about 35% and more porous AM SS-316L parts, demonstrating the method's reliability in assessing AM-induced defects. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Iron and Steel, Modeling and Simulation |