화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.21, 172-177, January, 2015
DOI10.1016/j.jiec.2014.07.029  Export Citation
Rheological analysis of graphene oxide coated anisotropic PMMA microsphere based electrorheological fluid from Couette flow geometry
Pek-Ing Au, Benjamin Foo, Yee-Kwong Leong†, Wen Ling Zhang1, and Hyoung Jin Choi1, †
  • School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley 6009, Australia
  • 1Department of Polymer Science and Engineering, Inha University, Incheon, Republic of Korea
E-mail:,
Based on flow curve of graphene oxide coated polymeric microsphere based electrorheological (ER) fluid, model independent yield stress and shear rate, g˙ ðtÞ, were determined using a Tikhonov regularization technique developed to solve the inverse problem of the shear rate in Couette flow viscometry. The model independent yield stress data were compared with that extracted from yield stress fluidmodels of Bingham plastic and Cho-Choi-Jhon (CCJ) used to fit the g˙ ðtÞ data. The agreement between model independent and Bingham yield stress was excellent, while the CCJ model yield stresses are generally slightly higher.
Keywords:Electrorheological fluid;Yield stress;Tikhonov regularization;Graphene oxide;Microsphere
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