Obtaining the shear stress shear rate relationship and yield stress of liquid foods from Couette viscometry data

Leong, Y.K., and Yeow, Y.L. (2003) Obtaining the shear stress shear rate relationship and yield stress of liquid foods from Couette viscometry data. Rheologica Acta, 42 (4). pp. 365-371.

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Abstract

A method based on Tikhonov regularisation is used to convert the Couette viscometry data of a number of liquid foods into shear stress vs shear rate relationships. For liquid foods that have a yield stress and if the viscometry data cover the appropriate range of shear stress, Tikhonov regularisation is used to compute simultaneously the yield stress. The versatility of Tikhonov regularisation is demonstrated by applying it to process data from wide as well as narrow gap Couette viscometers. The results generated by Tikhonov regularisation are compared against that obtained by methods currently employed by rheologists.

Item ID: 7101
Item Type: Article (Research - C1)
ISSN: 1435-1528
Keywords: Bingham viscosity; Couette viscometry; inverse problem; shear stree-shear rate curve; Tikhonov regularisation; yield stress
Date Deposited: 22 Mar 2010 05:29
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090499 Chemical Engineering not elsewhere classified @ 100%
SEO Codes: 86 MANUFACTURING > 8602 Dairy Products > 860299 Dairy Products not elsewhere classified @ 51%
86 MANUFACTURING > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860108 Processed Fruit and Vegetable Products (incl. Fruit Juices) @ 49%
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