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arXiv · 0903.5395

Shear-induced fractures and three-dimensional motions in an organogel

P. Grondin·S. Manneville·J. -L. Pozzo·A. Colin
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Abstract

The flow behavior of a viscoelastic organogel is investigated using ultrasonic velocimetry combined with rheometry. Our gel presents a decreasing flow curve, i.e., the measured stress decreases as a function of the applied shear rate. Strikingly, we note that the local flow curve calculated from the velocity profiles also exhibits a decreasing part. We attribute this regime to the presence of a fracturing process and three-dimensional motions in the bulk of the sample.

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P. Grondin, S. Manneville, J. -L. Pozzo, A. Colin. 2009-03-31. Shear-induced fractures and three-dimensional motions in an organogel. https://doi.org/10.1103/physreve.77.011401

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