About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Effect of Particle Size on Optical Properties of Powder Bed With Near-Infrared Laser for Large Scale Powder Bed Fusion Process in Polymer |
| Author(s) |
Yuki Yamauchi, Koichi Fujii, Takashi Kigure |
| On-Site Speaker (Planned) |
Yuki Yamauchi |
| Abstract Scope |
The authors are trying to develop a large-scale powder bed fusion process for polymers to increase productivity or produce larger parts for expanding applications, such as automotive and aerospace. This process focuses on the optical properties of the powder bed, such as the penetration depth of incident laser or reflection, to increase the melting depth in a single-layer process. Previous studies have suggested that while the use of a near-infrared laser is effective in increasing the penetration depth, most of the laser energy is lost through diffuse reflection. In this study, the authors attempted to reduce the particle interface by increasing the particle size and confirmed that this allowed us to reduce the diffuse reflection and increase the penetration depth. In addition, the melting depth was also increased by using larger powder sizes with the same laser energy. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |