Measurements and simulations of the cross-section of the printed strands in fused filament fabrication

Marcin P. Serdeczny, Raphaël Comminal, David B. Pedersen, Jon Spangenberg

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

    Abstract

    We measure and simulate the shape of an extruded strand in Fused Filament Fabrication; an additive manufacturing method where a solid thermoplastic material is melted and extruded through a nozzle in order to create a layered three-dimensional object. The prediction of the strand shape is essential in order to estimate the porosity, the surface roughness, and the dimensional accuracy of the fabricated parts. Using optical microscopy, we quantify the dimensions of the strand cross-sections, for different printing conditions. For the first time, we compare experimental measurements of the strand cross-section with numerical results of three-dimensional computational fluid dynamics simulations. The numerical model predicts the effect of change of the layer height on the strand morphology and shows good agreements with the measurements.
    Original languageEnglish
    Title of host publicationProceedings - 2018 ASPE and euspen Summer Topical Meeting: Advancing Precision in Additive Manufacturing
    PublisherAmerican Society for Precision Engineering
    Publication date2018
    Pages78-82
    ISBN (Electronic)978-188770676-6
    Publication statusPublished - 2018
    Event2018 ASPE and euspen Summer Topical Meeting: Advancing Precision in Additive Manufacturing - Lawrence Berkeley National Laboratory, Berkeley, United States
    Duration: 22 Jul 201825 Jul 2018

    Conference

    Conference2018 ASPE and euspen Summer Topical Meeting
    LocationLawrence Berkeley National Laboratory
    Country/TerritoryUnited States
    CityBerkeley
    Period22/07/201825/07/2018
    OtherJoint Special Interest Group meeting: Additive Manufacturing

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