Experimental Characterization of High Viscosity Droplet Ejection

dc.creatorMeachum, J. Mark
dc.creatorO'Rourke, Amanda
dc.creatorYang, Yong
dc.creatorFedorov, Andrei G.
dc.creatorDegertekin, F. Levent
dc.creatorRosen, David W.
dc.date.accessioned2021-09-29T20:30:54Z
dc.date.available2021-09-29T20:30:54Z
dc.date.issued2009-09
dc.description.abstractAdditive Manufacturing via Microarray Deposition (AMMD) expands the allowable range of physical properties of printed fluids to include important, high-viscosity production materials (e.g., polyurethane resins). This technique relies on a piezoelectrically-driven ultrasonic printhead that generates continuous streams of droplets from 45 mm orifices while operating in the 0.5 to 3.0 MHz frequency range. Unique to this new printing technique are the high frequency of operation, use of fluid cavity resonances to assist ejection and acoustic wave focusing to generate the pressure gradient required to form and eject droplets. Specifically, we found that peaks in the ejection quality corresponded to predicted device resonances. Our results indicate that the micromachined ultrasonic print-head is able to print fluids up to 3000 mN-s/m2, far above the typical printable range.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/88216
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/15157
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2009 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectAdditive Manufacturing via Microarray Depositionen_US
dc.subjectprinted fluidsen_US
dc.subjecthigh-viscosity production materialsen_US
dc.subjectpiezoelectrically-driven ultrasonic printheaden_US
dc.subjectdroplet ejection qualityen_US
dc.titleExperimental Characterization of High Viscosity Droplet Ejectionen_US
dc.typeConference paperen_US

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