Dissertations / Theses on the topic 'Dynamic shear rheology'
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Romo-Uribe, Angel. "Main-chain thermotropic liquid crystalline polymers under shear : a dynamic scattering study." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243155.
Full textPieri, Marco. "Shear deformation of calcite rocks : rheology and microfabric evolution of Carrara marble under dynamic recrystallization during torsion experiments /." Zürich : ETH, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13220.
Full textStřasáková, Monika. "Stárnutí asfaltových pojiv." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240117.
Full textPěnčík, Michal. "Reologické vlastnosti asfaltových pojiv." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227653.
Full textTsamados, Michel. "Mechanical response of glassy materials : theory and simulation." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00466081.
Full textAli, Nabil. "RhéoSpeckle : un nouvel outil d’étude du comportement multi-échelle des matériaux hétérogènes." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI013/document.
Full textThis work tries to better characterize the behavior of homogeneous and heterogeneous materials under shear with a multi-scale approach (macro-meso-micro-scopic). To do that, we have developed an innovative setup by coupling a rheometer to a speckle imaging geometry witch is spatially and temporally resolved (RheoSpeckle). We validate our experience using two perfect materials: a solid and a pure viscous fluid. On a solid sample, we calculate the displacement field on the speckle images with a resolution better than 1 µm. we demonstrate than, the microscopic elasticity of this material. On a pure viscous fluid, we measured the nanoparticle’s size with excellent accuracy. When a constant shear rate is applied, the velocity profile is measured with a time less than 1 s with a spatial resolution of 100 µm over 5 mm. The microscopic dynamic of a Brownian solution under shear is probed and the shear induced on the decorrelation of the intensity correlation function is studied. We show the capabilities of our experience using a concentrated solution of wormlike micelles. The linear rheology is studied using rheometric measurements and our speckle imaging system. Nonlinear rheology is studied using rheometric measurements (macro), but also by calculating the velocity filed and the intensity of speckle images (meso). With mesocopics measurements, the formation of shear banding is proved and characterized. Finally, the spatio-temporal relaxation (micro) of shear bands of this material is studied. We show for the first time the existence of two relaxations times after shear and that the relaxation of bands is relatively slow
Isreb, Mohammad. "Thermal and rheological approaches for the systematic enhancement of pharmaceutical polymeric coating formulations : effects of additives on glass transition temperature, dynamic mechanical properties and coating performance in aqueous and solvent-free coating process using DSC, shear rheometry, dissolution, light profilometry and dynamic mechanical analysis." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5527.
Full textAli, Mahdi. "Study of the bitumen aging effects on the rheological properties and fatigue behavior." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16255/.
Full textBos�ko, Jaroslaw Tomasz, and jbosko@unimelb edu au. "Molecular simulation of dendrimers under shear." Swinburne University of Technology. Centre for Molecular Simulation, 2005. http://adt.lib.swin.edu.au./public/adt-VSWT20050804.141034.
Full textMadraki, Fatemeh. "Shear Thickening in Non-Brownian Suspensions." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1584354185678102.
Full textMusil, Vladimír. "Relaxace smykového napětí asfaltových pojiv v DSR." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227690.
Full textHotař, Petr. "Reologické vlastnosti asfaltových pojiv." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226951.
Full textSnook, Braden. "The dynamics of the microstructure and the rheology in suspensions of rigid particles." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4700.
Full textNumerical and experimental methods were used to reveal the complex relationship between the macroscopic properties and the microstructure of a suspension where either spheres or rigid fibers were considered. For fibers, results using a newly developed numerical model indicate that contacts are dominant in predicting the dynamics of the microstructure. The results show contacts must be included in calculating the stress in order to accurately predict the normal stress differences as well. Experiments measuring the normal stress differences were performed and were found to be in agreement with the numerical predictions, validating the model and its results. Discrepancies with previous work in the literature were examined. The long time required to reach steady state and the influence of confinement from the experimental geometry were found to be the source of these differences. For spheres, an experiment was built to study the dynamics of particle migration in parabolic flow. High-resolution particle volume fraction and velocity distribution measurements were made. Steady state results were found to be in excellent agreement with previous discrete element simulations and experiments at similar geometries and volume fractions. Dynamic results were compared to the suspension balance model (SBM). Excellent agreement with the SBM was exhibited only at the highest bulk particle volume fraction. Accordingly, additional development of the rheology used in the SBM is required to understand the role of the bulk volume fraction on its predictions. The results from this experiment will greatly aid this endeavor by providing the experimental data required for validation
Sridharan, Harini. "COUPLED DYNAMICS OF HEAT TRANSFER AND FLUID FLOW IN SHEAR RHEOMETRY." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1597346164780318.
Full textBraak, Etienne. "Aération pour le décolmatage dans les bioréacteurs à membranes immergées pour le traitement des eaux usées : impact sur le milieu biologique et la filtration." Phd thesis, Toulouse, INPT, 2012. http://oatao.univ-toulouse.fr/8859/1/braak.pdf.
Full textHuang, Chien-Cheng. "Statics, dynamics, and rheological properties of micellar solutions by computer simulation." Thesis, Universite Libre de Bruxelles, 2007. http://www.theses.fr/2007METZ022S/document.
Full textStatics, Dynamics, and Rheological properties of Micellar solutions by Computer Simulation Statics, dynamics, rheology and scission-recombination kinetics of self-assembling linear micelles are investigated at equlibrium state and under shear flow by computer simulations using a newly proposed mesoscopic model. We model the micelles as linear sequences of Brownian beads whose space-time evolution is governed by Langevin dynamics. A Monte Carlo algorithm controls the opening of a bond or the chain-end fusion. A kinetic parameter o, modelling the effect of a potential barrier along a kinetic path, is introduced in our model. For equilibrium state we focus on the analysis of short and long time behaviors of the scission and recombination mechanisms. Our results show that at time scales larger than the life time of the average chain length, the kinetics is in agreement with the mean-field kinetics model of Cates. By studying macroscopic relaxation phenomena such as the average micelle length evolution after a T-jump, the monomer diffusion, and the zero shear relaxation function, we confirm that the effective kinetic constants found are indeed the relevant parameters when macroscopic relaxation is coupled to the kinetics of micelles. For the non-equilibrium situation, we study the coupled effects of the shear flow and the scissionrecombination kinetics, on the structural and rheological properties of this micellar system. Our study is performed in semi-dilute and dynamically unentangled regime conditions. The explored parameter o range is chosen in order for the life time of the average size chain to remain shorter than its intrinsic (Rouse) longest relaxation time. Central to our analysis is the concept of dynamical unit of size A, the chain fiagrnent for which the life time TA and the Rouse time are equal. Shear thinning, chain orientation and bond stretching are found to depend upon the reduced shear rate P1\=y~A while the average micelle size is found to decrease with increasing shear rate, independently of the height of the barrier of the scission-recombination process
Miller, Erik. "The dynamics and rheology of shear -banding wormlike micelles and other non -Newtonian fluids." 2007. https://scholarworks.umass.edu/dissertations/AAI3275776.
Full textZausch, Jochen [Verfasser]. "Dynamics, rheology and critical properties of colloidal fluid mixtures : molecular dynamics studies in Equilibrium and under shear / vorgelegt von Jochen Zausch." 2009. http://d-nb.info/993625959/34.
Full textSchneider, Ludwig. "Rheology and Structure Formation in Complex Polymer Melts." Doctoral thesis, 2019. http://hdl.handle.net/11858/00-1735-0000-002E-E60C-C.
Full textNegi, Ajay Singh. "Soft Matter Under Electric Field And Shear." Thesis, 2008. http://hdl.handle.net/2005/717.
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