Tassieri, M. , Laurati, M., Curtis, D. J., Auhl, D. W., Coppola, S., Scalfati, A., Hawkins, K., Williams, P. R. and Cooper, J. M. (2016) i-Rheo: Measuring the materials' linear viscoelastic properties 'in a step'! Journal of Rheology, 60(4), pp. 649-660. (doi: 10.1122/1.4953443)
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Abstract
We present a simple new analytical method for educing the materials' linear viscoelastic properties, over the widest range of experimentally accessible frequencies, from a simple step-strain measurement, without the need of preconceived models nor the idealization of real measurements. This is achieved by evaluating the Fourier transforms of raw experimental data describing both the time-dependent stress and strain functions. The novel method has been implemented into an open access executable “i-Rheo,” enabling its use to a broad scientific community. The effectiveness of the new rheological tool has been corroborated by direct comparison with conventional linear oscillatory measurements for a series of complex materials as diverse as a monodisperse linear polymer melt, a bimodal blend of linear polymer melts, an industrial styrene-butadiene rubber, an aqueous gelatin solution at the gel point and a highly concentrated suspension of colloidal particles. The broadband nature of the new method and its general validity open the route to a deeper understanding of the material's rheological behavior in a variety of systems
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Tassieri, Dr Manlio and Cooper, Professor Jonathan |
Authors: | Tassieri, M., Laurati, M., Curtis, D. J., Auhl, D. W., Coppola, S., Scalfati, A., Hawkins, K., Williams, P. R., and Cooper, J. M. |
College/School: | College of Science and Engineering > School of Engineering > Biomedical Engineering |
Journal Name: | Journal of Rheology |
Publisher: | American Institute of Physics |
ISSN: | 0148-6055 |
ISSN (Online): | 1520-8516 |
Published Online: | 14 June 2016 |
Copyright Holders: | Copyright © 2016 The Authors |
First Published: | First published in Journal of Rheology 60(4):649-660 |
Publisher Policy: | Reproduced under a Creative Commons License |
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