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Correlating Rheological Experiments, TEVP Models, and Microstructure with Small Angle Light Scattering
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作者 Matthew J. Armstrong André M. Pincot 《Open Journal of Fluid Dynamics》 2022年第1期36-55,共20页
The existence of an evolving microstructure in a 2.9 vol% fumed silica in paraffin oil and polyisobutylene is demonstrated experimentally and via rheological modeling during steady state and large amplitude oscillator... The existence of an evolving microstructure in a 2.9 vol% fumed silica in paraffin oil and polyisobutylene is demonstrated experimentally and via rheological modeling during steady state and large amplitude oscillatory shear flow. The continuously evolving, rebuilding, and breaking down of the microstructure is shown, and correlated through the rheology experiments, thixo-elastovisco-plastic modeling, and small angle light scattering (SALS). All elements are then connected via a global, stochastic optimization algorithm that will provide parameter estimation with a “best-fit” of the steady state and transient data using the well-known Modified Delaware Thixotropic Model, allowing for the comparison of SALS results with experimental values. 展开更多
关键词 Small Angle Light Scattering MICROSTRUCTURE RHEOLOGY thixo-elastic-viscoplastic Materials
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