| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Investigation of Crack Formation Process during Low Temperature Laser Sintering of PEEK by Observing Melt and Solidification Behavior |
| Author(s) |
Takashi Kigure, Yuki Yamauchi, Toshiki Niino |
| On-Site Speaker (Planned) |
Takashi Kigure |
| Abstract Scope |
In a previous study, PEEK was successfully laser sintered at a mild powder bed preheating temperature below the recrystallization point with in-process part warpage suppressed by fixing the parts to a rigid base plate instead of using "process window," but serious surface finish degradation and large crack formation were observed. In this study, a video camera observation of the melting and solidification processes is performed to investigates formation process of such rough surfaces and cracks, with the aim of improving the part quality out of "low-temperature process," which does not preheat the powder bed above recrystallization temperature. The results reveals that volume changes during melting and solidification play an important role in the generation of rough surfaces and the cracks. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |