Distributed Optical Fiber Testing for Additive Manufacturing

dc.creatorHlifka, Brian M.
dc.creatorKinzel, Edward C.
dc.date.accessioned2024-03-26T20:43:09Z
dc.date.available2024-03-26T20:43:09Z
dc.date.issued2023
dc.description.abstractThis paper explores optical fiber's use 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. Distributed measurements using optical backscattering reflectometry (OBR) resolve the strain along the optical fiber and the temperature. OBR-enabled sensing is demonstrated for the fused filament fabrication (FFF) process. The small diameter (0.125 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 details 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.
dc.description.departmentMechanical Engineering
dc.identifier.urihttps://hdl.handle.net/2152/124403
dc.identifier.urihttps://doi.org/10.26153/tsw/51011
dc.language.isoen_US
dc.publisherUniversity of Texas at Austin
dc.relation.ispartof2023 International Solid Freeform Fabrication Symposium
dc.rights.restrictionOpen
dc.subjectadditive manufacturing
dc.subjectoptical fiber
dc.subjectfused filament fabrication
dc.titleDistributed Optical Fiber Testing for Additive Manufacturing
dc.typeConference paper

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