Correlating Large-Format AM Print Parameters to Fiber Length and Mechanical Performance of Reinforced Polymer Composites

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dc.creatorRhodes, Andrew
dc.creatorWalker, Roo
dc.creatorSmith, Tyler
dc.creatorLindahl, John
dc.creatorKunc, Vlastimil
dc.creatorDuty, Chad
dc.date.accessioned2021-12-06T21:43:37Z
dc.date.available2021-12-06T21:43:37Z
dc.date.issued2021
dc.description.abstractThis paper aims to correlate processing conditions to fiber length and mechanical properties in fiber-reinforced composites on the Big Area Additive Manufacturing (BAAM) system at Oak Ridge National Laboratory. The processing of fiber-reinforced composites has a significant influence on their microstructure, which dictates the properties of the final product. The effect of processing is poorly documented in systems like the BAAM, leaving significant opportunities to improve the mechanical performance of printed structures. In this work, fiber length distributions from pelletized feedstock were compared against those of specimens extruded under different processing speeds. The mechanical strength of each specimen was evaluated to correlate processing speed to fiber length and mechanical properties. Experimental results showed that fiber length decreases slightly with increasing screw speed. Mechanical performance was not found to be affected by the decrease in fiber length. This research will guide future modifications to hardware design and print parameters to maintain fiber length and maximize mechanical performance.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90682
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17601
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2021 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectprint parametersen_US
dc.subjectfiber lengthen_US
dc.subjectmechanical propertiesen_US
dc.subjectfiber-reinforced compositesen_US
dc.subjectbig area additive manufacturingen_US
dc.titleCorrelating Large-Format AM Print Parameters to Fiber Length and Mechanical Performance of Reinforced Polymer Compositesen_US
dc.typeConference paperen_US

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2021 International Solid Freeform Fabrication Symposium