Fingerprinting Soft Materials: A Framework for Characterizing Nonlinear Viscoelasticity

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We introduce a comprehensive scheme to physically quantify both viscous and elastic rheological nonlinearities simultaneously, using an imposed large amplitude oscillatory shear (LAOS) strain. The new framework naturally lends a physical interpretation to commonly reported Fourier coefficients of the nonlinear stress response. Additionally, we address the ambiguities inherent in the standard definitions of viscoelastic moduli when extended into the nonlinear regime, and define new measures which reveal behavior that is obscured by conventional techniques.
10 pages, 3 figures, full-page double-space preprint format

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Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/174212

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.5509
 http://arxiv.org/abs/0710.5509
 Ewoldt, R. H., A. E. Hosoi and G. H. McKinley, "New measures for characterizing nonlinear viscoelasticity in large amplitude oscillatory shear," Journal of Rheology 52(6), 1427-1458 (2008)
 doi:10.1122/1.2970095

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arXiv