Evaluation of a Feed-Forward Laser Control Approach for Improving Consistency in Selective Laser Sintering

dc.creatorPhillips, T.
dc.creatorFish, S.
dc.creatorBeaman, J.
dc.date.accessioned2021-11-18T19:02:28Z
dc.date.available2021-11-18T19:02:28Z
dc.date.issued2019
dc.description.abstractSelective Laser Sintering (SLS) is a popular industrial additive manufacturing technique for creating functional polymer components. One of the biggest limitations today with SLS is its poor mechanical consistency when compared with traditional manufacturing techniques, inhibiting the use of SLS among structurally critical components. Evaluation of the SLS process has revealed that the quality of components is strongly affected by the thermal history during the build process and poor control over this can lead to premature part failure. This paper will discuss a novel technique of improving in-situ thermal control by implementing a feed-forward laser controller that uses dynamic surrogate modelling to predict optimal laser power to achieve desired thermal characteristics. Thermal and destructive testing results will be presented showing that the described laser power controller is capable of decreasing the standard deviations of post sintering temperature by up to 57% and ultimate flexural strength by up to 45%.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90469
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17390
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2019 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectfeed-forward laser controlen_US
dc.subjectthermal controlen_US
dc.subjectin-situen_US
dc.subjectconsistencyen_US
dc.subjectselective laser sinteringen_US
dc.titleEvaluation of a Feed-Forward Laser Control Approach for Improving Consistency in Selective Laser Sinteringen_US
dc.typeConference paperen_US
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