TY - GEN

T1 - Characterizing the elasticity of viscoelastic materials based on RHEO-dielectric effect

AU - Peng, Yiyan

AU - Cui, Zhixiang

AU - Turng, Lih Sheng

PY - 2010

Y1 - 2010

N2 - Dielectrostriction is a rheodielectric phenomenon that relates the variation of dielectric properties of a material with deformation. For an initially isotropic material, two independent material coefficients, α1 and α2 are required to describe dielectrostriction in terms of strain. Deformation affects a material's dielectric properties in two ways: (a) by introducing anisotropy in the material, which is characterized by α1 and (b) by changing the volume density of the polarizable species, which is associated with 1/3α1 + α2. Purely viscous fluids will remain isotropic during any flow-induced deformation and therefore the coefficient, α1, is always zero. In this paper, the dielectrostriction effect is studied on viscoelastic materials with varying elasticity. The coefficient, α1, is measured by a planar capacitance sensor rosette. Also, the relationship between the coefficient, ctu and the material elasticity is discussed.

AB - Dielectrostriction is a rheodielectric phenomenon that relates the variation of dielectric properties of a material with deformation. For an initially isotropic material, two independent material coefficients, α1 and α2 are required to describe dielectrostriction in terms of strain. Deformation affects a material's dielectric properties in two ways: (a) by introducing anisotropy in the material, which is characterized by α1 and (b) by changing the volume density of the polarizable species, which is associated with 1/3α1 + α2. Purely viscous fluids will remain isotropic during any flow-induced deformation and therefore the coefficient, α1, is always zero. In this paper, the dielectrostriction effect is studied on viscoelastic materials with varying elasticity. The coefficient, α1, is measured by a planar capacitance sensor rosette. Also, the relationship between the coefficient, ctu and the material elasticity is discussed.

KW - Dielectrostriction

KW - Elasticity

KW - Strain-dielectric coefficient

KW - Viscoelastic materials

UR - http://www.scopus.com/inward/record.url?scp=77956936547&partnerID=8YFLogxK

M3 - 会议稿件

AN - SCOPUS:77956936547

SN - 9781617386602

T3 - Annual Technical Conference - ANTEC, Conference Proceedings

SP - 2058

EP - 2062

BT - 68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010

T2 - 68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010

Y2 - 16 May 2010 through 20 May 2010

ER -