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Thixotropic spectra and Ashby-style charts for thixotropy.
- Source :
-
Journal of Rheology . Sep2022, Vol. 66 Issue 5, p1041-1053. 13p. - Publication Year :
- 2022
-
Abstract
- There is no universal model for thixotropy, and comparing thixotropic effects between different fluids is a subtle yet challenging problem. We introduce a generalized (model-insensitive) framework for comparing thixotropic properties based on thixotropic spectra. A superposition of exponential stress modes distributed over thixotropic time scales is used to quantify buildup and breakdown times and mode strengths in response to step-change input. This mathematical framework is tested with several experimental step-shear rate data on colloidal suspensions. Low-dimensional metrics based on moments of the distribution reveal characteristic average thixotropic properties, which are visualized on Ashby-style diagrams. This method outlines a framework for describing thixotropy across a diverse range of microstructures, supporting scientific studies as well as material selection for engineering design applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THIXOTROPY
*COLLOIDAL suspensions
*ENGINEERING design
*YIELD stress
Subjects
Details
- Language :
- English
- ISSN :
- 01486055
- Volume :
- 66
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Rheology
- Publication Type :
- Academic Journal
- Accession number :
- 162291228
- Full Text :
- https://doi.org/10.1122/8.0000446