About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Measuring Temperature during AC Selective Laser Flash Sintering |
Author(s) |
Joey A. Zamora, David Khanan, Joseph Beaman, Desiderio Kovar |
On-Site Speaker (Planned) |
Joey A. Zamora |
Abstract Scope |
Selective laser flash sintering (SLFS) is proposed as a method for directly additively manufacturing ceramics without the need for a polymeric binder. Understanding the onset of the flash event is essential in SLFS because it is necessary to interrupt the flash before thermal runaway and cracking occur. The onset of flash is characterized by a sharp increase in both the current flowing through the sample and resulting temperature rise associated with Joule heating. Thus, a high-speed temperature measurement of the highly dynamic hot region is needed to allow for a repeatable additive manufacturing process. A coaxial photodiode is studied in this research for its sensitivity at the near-infrared wavelengths and its very short response times. Experiments are conducted using alternating electric fields in the SLFS system to determine the sensitivity of this technique to measure temperatures
during SLFS. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |