論文

査読有り
2017年8月

Measurement of planar elongation stress and viscosity in step planar elongation flow for mobile viscoelastic fluids

RHEOLOGICA ACTA
  • Manabu Kato
  • ,
  • Masataka Shirakashi
  • ,
  • Tsutomu Takahashi

56
7-8
開始ページ
649
終了ページ
659
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s00397-017-1023-2
出版者・発行元
SPRINGER

We propose a new technique which can treat low viscous viscoelastic fluids and which can measure the start-up and relaxation behavior of elongational stress in step elongation rate flow. This new device consists of two parts: the squeeze cell and the optical analyzer. The squeeze cell generates the planar squeeze flow and causes the step planar elongational flow at the stagnation point. The optical system measures the transient behavior of both birefringence and orientation angle in the start-up and relaxation region at the stagnation point. In this paper, we demonstrate the two-dimensionality of the flow in the planar squeeze cell. Next, we evaluated the planar elongational stress and viscosity from optical results for Maxwell fluid. These results show good agreement with Maxwell model. Finally, we clarify the measurement accuracy from the measurement results in channels of various sizes.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.1007/s00397-017-1023-2
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000406190200005&DestApp=WOS_CPL

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