Didier Lootens, Pierre Jousset, Camille Dagallier, Pascal Hebraud, Robert Flatt
The ''Dog Tail Test'': a quick and dirty measure of yield stress. Application to polyurethane adhesives
Appl. Rheol. 19:1 (2009) 13726 (7 pages)

Abstract: It is observed that, although consisting on very different formulations, the rheological properties of filled polyurethane adhesives may be rescaled onto simple master curves, and described with a small number of parameters: a yield stress, a low frequency elastic modulus and a characteristic time of flow. As a consequence, very simple and qualitative measurements of their deformations, such as the Dog Tail Test, may be used to deduce these parameters. By comparing the values obtained from Dog Tail Test measurements to well-controlled rheological measurements and to finite element computation, we show that such a simple and qualitative test may be used as a tool to measure both the yield stress and the elastic modulus of highly viscoelastic systems © 2009 Applied Rheology.

DOI 10.3933/ApplRheol-19-13726

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