David C. Venerus
Free Surface Effects on Normal Stress Measurements in Cone and Plate Flow
Appl. Rheol. 17:3 (2007) 36494 (6 pages)

Abstract: The effects of free surface shape on normal stress difference measurements in cone and plate flow are investigated. The analysis shows that the stress field is significantly altered by deviations of the free surface from an ideal (spherical) shape. For the cone and partitioned plate technique, it is shown how modest deviation from a spherical free surface shape can lead to errors of roughly 10% in the measured normal stress differences. © 2007 Applied Rheology.

DOI 10.3933/ApplRheol-17-36494

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