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논문 기본 정보

자료유형
학술저널
저자정보
Tanner, R.I. (School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney) Kitoko, V. (School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney) Keentok, M. (School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제15권 제2호
발행연도
2003.1
수록면
63 - 73 (11page)

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An experimental technique was developed to determine the strain-rate in a tensile specimen. Then one can calculate the transient isothermal elongational viscosity. Both shear and elongational viscosities were measured to study the effect of shear and elongational fields on the flow properties. The comparison between these viscosities shows that the onset of rapid viscosity growth as crystallization solidification proceeds occurs at about the same value of time at very small deformation rates (0.0028 and 0.0047 $s^{-1}$). The comparison of these measured viscosities as functions of shear and elongational Hencky strains also reveals that the onset of rapid viscosity growths starts at critical Hencky strain values. The behaviour of steady shear viscosity as function of temperature sweep was also explored at three different low shear rates. Finally, the influence of changing oscillatory frequencies and strain rates was also investigated.

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