Cone-plate instrument for stress relaxation measurements

An instrument for the measurement of stress relaxation in shear is described. The force is detected by a sensitive piezoresistive pressure transducer. The requirement of constant strain can be fulfilled within less than 1%. Preset values of shear strain can be imposed on the sample within 0.1 sec. T...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 73; no. 1; pp. 61 - 65
Main Authors Bohlin, L, Carlson, T.L-G, Bäckström, G
Format Journal Article
LanguageEnglish
Published Elsevier Inc 1980
Subjects
cone-plate device
Instrumentation
stress relaxation
viscosity
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Summary:An instrument for the measurement of stress relaxation in shear is described. The force is detected by a sensitive piezoresistive pressure transducer. The requirement of constant strain can be fulfilled within less than 1%. Preset values of shear strain can be imposed on the sample within 0.1 sec. This instrument is suitable for soft solids and elastic liquids with a lower limit of ∼ 1 sec for the relaxation time. Results are given for wheat flour dough, a gelatinous deoxycholate complex and a gelatin gel. The instrument is simple, robust, and reliable, as well as inexpensive.
ISSN:0021-9797
1095-7103
1095-7103
DOI:10.1016/0021-9797(80)90122-8