유동 모드 하에서 ER 유체의 빙햄 특성에 대한 연구

• 영문명: A Study on the Bingham Properties of an ER Fluid under Flow Mode
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 전우청(Woo-Cheong Jeon) 이형식(Hyong-Sik Lee)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제16권 4호, 235~242쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2011.12.30

영문 초록

This experimental study presents Bingham properties under the flow mode. Among working modes of ER fluids the flow mode is considered in this study. In order to undertake this work, a flow mode type electro-viscometer is manufactured. The experimental setup is similar to the ER damper which is operated by the double-rod hydraulic cylinder. The electrode gap is chosen by 1.00㎜. The pressure drops in the viscometer are measured by two pressure sensors at each end of the electrode. The yield stresses are then obtained through analytical procedures. As for the ER fluid to be tested, two types of ER fluids are employed; soluble-arabic gum based ER fluid(I3S50), an ER fluid of Bayer. The first one is composed in-housingly. The pressure drops of ER fluids are measured by increasing the electric field from zero to maximum voltage in room temperature. Consequently, the yield stresses of the ER fluids are obtained. The significant factor of Bingham properties, ？？ and ？？ values, of all ER fluid in the flow mode appeared to be greater than that in the shear mode, exclusive of soluble-arabic gum based ER fluid. Therefore, the Bingham model applied to the application of flow-mode type of device, the results obtained from the flow-mode type of experiment should be used.

목차

I. 서 론

Ⅱ. 유동 모드에서의 압력강하와 전단응력

Ⅲ. 실험장치 제작 및 실험방법

Ⅳ. 결과 및 고찰

V. 결 론

키워드

ER Fluid(ER유체) Electric Field(전기장) Flow Mode(유동모드) Working Mode(작동 모드) Pressure Drop(압력 차) Yield Stress(항복응력)