Please use this identifier to cite or link to this item: https://doi.org/10.1122/1.4815979
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dc.titleShort-term and long-term irreversibility in particle suspensions undergoing small and large amplitude oscillatory stress
dc.contributor.authorLin, Y.
dc.contributor.authorPhan-Thien, N.
dc.contributor.authorKhoo, B.C.
dc.date.accessioned2014-06-17T06:33:17Z
dc.date.available2014-06-17T06:33:17Z
dc.date.issued2013-09
dc.identifier.citationLin, Y., Phan-Thien, N., Khoo, B.C. (2013-09). Short-term and long-term irreversibility in particle suspensions undergoing small and large amplitude oscillatory stress. Journal of Rheology 57 (5) : 1325-1346. ScholarBank@NUS Repository. https://doi.org/10.1122/1.4815979
dc.identifier.issn01486055
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/61284
dc.description.abstractThe short-term and long-term irreversible behaviors of suspensions of rigid particles in oscillatory shear flow are studied by measuring the evolution of complex viscosity in time and applying of nonlinear analysis of the responded strain signal under the controlled-stress mode, and complemented by optical measurements on the particle motion. The short-term transition time for the system to reach a quasisteady state is an approximately bell-shaped function of the amplitude of the strain response, thus showing a critical strain amplitude accounting for the peak transition time. The short-term behavior is caused by the particle self-organization due to collisions between particles. At longer time scales, the complex viscosity of the suspension increases when probed by forces that elicit small strain amplitudes and decreases when stresses that result in large strain amplitudes are applied. It is proposed that the long-term behavior for stresses eliciting small strain amplitude is induced by the shear-induced diffusion of particles which self-organize into a crystal-like microstructure that can be easily annulled in oscillatory flow with large strain amplitude, while for stresses causing large strain amplitude the dominant microstructure is formed immediately via the oscillation. © 2013 The Society of Rheology.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1122/1.4815979
dc.sourceScopus
dc.subjectLarge amplitude oscillatory shear
dc.subjectShear-induced diffusion
dc.subjectSuspension
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1122/1.4815979
dc.description.sourcetitleJournal of Rheology
dc.description.volume57
dc.description.issue5
dc.description.page1325-1346
dc.description.codenJORHD
dc.identifier.isiut000324679100004
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