| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Additive Manufacturing of Titanium Loop Heat Pipe for Thermal Management of Spaceflight |
| Author(s) |
Parth Agrawal, Ashley Paz y Puente, Dinc Erdeniz, Ying Sun, Sandeep Hatte, Calin Tarau, Han Hu |
| On-Site Speaker (Planned) |
Parth Agrawal |
| Abstract Scope |
Using additive manufacturing to develop two-phase heat transfer devices such as loop heat pipes (LHPs) enables the printing of complete systems as single parts, minimizing the number of joints, improving reliability, and reducing complexity and cost. However, at the development stage, printing the necessary porous wick structures in the LHP evaporators remains a challenge as feature sizes are limited by laser spot size. By modifying print parameters including laser power, scan speed, hatch spacing, and scan strategy, we introduce lack-of-fusion porosity in the printed geometry to create pores smaller than what laser dimensions allow. Here we discuss a systematic parametric study to generate Ti-6Al-4V and pure Ti wick structures and compare their pore radii, permeabilities, porosities, and wicking behavior to obtain the optimum print parameters for ideal wick performance. Knowing these values will allow us to design LHPs that will deliver effective and reliable heat dissipation for space applications. |