| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Distributed Optical Fiber Testing for Additive Manufacturing |
| Author(s) |
Brian Hlifka, Edward C. Kinzel |
| On-Site Speaker (Planned) |
Brian Hlifka |
| Abstract Scope |
This paper explores the use of optical fiber for in-situ inspection of additive manufacturing. Single-mode SMF-28 optical fiber can be placed on the build plate to monitor the printing process or embedded in the part itself. Distributed measurements using optical backscattering reflectometry (OBR) resolve the strain along the optical fiber as well as the temperature. OBR-enabled sensing is demonstrated for the fused filament fabrication (FFF) process. The small diameter (0.25 mm) of SMF-28 lends itself to embedding in FFF prints this enables laying the fiber into the part which provides continued sensing for the parts in use. Knowledge of the process and the fiber arrangement allows heating from the deposition head to be distinguished from stress-driven strain. Calibration of the fiber arrangement is discussed as well as a comparison with process modeling. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |