| A rheo-optical analysis of converging wedge flow for estimation of stress-optical coefficient.: An article from: Polymer Engineering and Science |  | Authors: R. Subramanian, J.J.C. Picot
Publisher: Society of Plastics Engineers, Inc.
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Format: HTML
Language: English (Published)
Media: Digital
Pages: 11
ASIN: B00096KGK4
Publication Date: May 15, 1996
Availability: Available for download now
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on May 15, 1996. The length of the article is 3086 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: Results are presented from a rheo-optical study of a poly(dimethyl siloxane) (PDMS) fluid in a converging wedge flow cell at room temperature for estimation of the linear stress-optical coefficient. The linearity of the stress and polarizability or refractive index tensors were checked by flow birefringence measurements in pure extensional flow along the centerline of the converging flow cell that extended well into the non-Newtonian region. The stresses were evaluated using (a) shear and extension rates from laser Doppler anemometry (LDA) velocity measurements and (b) information obtained from orientation angle as a test of constitutive equations. All measurements were optical (i.e., non-intrusive), and a linear stress-optical coefficient of 1.475 x [10.sup.-10] [Pa.sup.-1] was obtained using a two-term Goddard-Miller model for room temperature flow of a PDMS fluid in combined shear and extension in a converging wedge flow cell.
Citation Details
Title: A rheo-optical analysis of converging wedge flow for estimation of stress-optical coefficient.
Author: R. Subramanian
Publication: Polymer Engineering and Science (Refereed)
Date: May 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n9 Page: p1196(7)
Distributed by Thomson Gale
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