About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
|
| Presentation Title |
TOPS: A High-Throughput, Laser-Based Method for Measuring Thermal Conductivity in Additive Manufactured and Other Materials |
| Author(s) |
Ron Fisher, Jeffrey Braun |
| On-Site Speaker (Planned) |
Jeffrey Braun |
| Abstract Scope |
We demonstrate an innovative technology, a high-throughput, simple, and efficient method to measure thermal conductivity of materials with minimal sample preparation and limited restrictions on sample shape and geometry. The Thermo-Optical Plane Source (TOPS) technique uses laser heating to induce a steady-state temperature rise in a material and infrared thermography to measure the corresponding temperature rise. A simple analysis using Fourier’s law allows for determination of a material’s thermal conductivity. In contrast to convectional thermal conductivity measurement techniques, TOPS is a direct measure of thermal conductivity rather than thermal diffusivity or effusivity, negating any need to know a sample’s density or heat capacity. We demonstrate the ability to measure thermal conductivities at room temperature with a focus on characterizing the thermophysical properties of metal alloy parts created through additive manufacturing, as those processes can impart non-uniform crystal structure and layer-to-layer variations. Applications include additively manufactured materials, ceramics, TIM’s, composites, polymers. |