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 |
Optical Frequency Domain Reflectometry (OFDR) on Fiber Embedded Metal Parts Created with Laser Powder Bed Fusion |
Author(s) |
Brian Hlifka, Robert Landers, Edward C. Kinzel |
On-Site Speaker (Planned) |
Brian Hlifka |
Abstract Scope |
Optical frequency domain reflectometry (OFDR) provides position-resolved temperature and strain along the length of the fiber. Standard, unprocessed optical fiber can be used. Because the diameter of optical fiber is small, ~0.25 mm diameter typical, it is ideal for incorporation with metal parts produced with laser powder bed fusion (LPBF) parts with small diameter channels. After production, the fiber can be threaded through the channels and open area in the channel filled with a bridge material to couple the fiber to thermal and mechanical loads or only thermal loads where employing both types of coupling allows differentiation between thermal and mechanical loads. This presentation will describe current work, including studies on the pressurized filling of the bridge material, its thermal treatment and and ultimate effectiveness in transducing realistic thermal and mechanical loading on LPBF parts. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |