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http://dx.doi.org/10.7736/KSPE.2015.32.4.369

Study on the Highly Viscous Fluid Ejection Pressure of Magnetostrictive Inkjet Head  

Oh, Ock Kyun (Department of Mechanical Design & Mechatronics Engineering, Graduate School, Chungnam National University)
Park, Young-Woo (Department of Mechatronics Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.4, 2015 , pp. 369-375 More about this Journal
Abstract
This paper presents ejection of high viscosity fluids with magnetostrictive inkjet printhead(Magjet), which is not common with any other printhead. The MagJet uses a magnetostrictive material, Terfenol-D rod with 10-mm in diameter and 50-mm in length, as an actuation mechanism. It has been known that high viscosity is often an obstacle in ejecting small and mono-disperse droplets. We calculated required pressure with fluidic inertia (Bernoulli equation) and viscous loss (Hagen Poiseuille equation). The required pressure for ejecting a droplet is 1300kPa. The generated force and displacement with Terfenol-D rod are estimated to be 480N (2600kPa) and $28{\mu}m$, respectively. It was enough that Magjet eject high viscosity fluid (Max 1000cP). The experiments are performed to eject the high viscosity fluid with Magjet. The ejection of high viscosity fluids is successful with the aid of Terfenol-D's high performance.
Keywords
Magnetostrictive inkjet; High viscosity fluid; Required pressure; Droplet; Viscous loss;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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