Global ETD Search
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Showing 1 to 5 of 5 for “"Oscillatory deformation"”.
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Thixotropic-viscoelastic rheological fingerprints in large amplitude oscillatory shear
… work we demonstrate the use of large-amplitude oscillatory shear (LAOS) as a tool to characterize the behavior of constitutive models that exhibit both thixotropic and viscoelastic phenomena. We demonstrate this use of LAOS by first examining the strain controlled LAOS (LAOStrain) response of a …
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The yielding transition in soft materials
… and exhibit varying extents of solid-like deformation or fluid-like flow, depending on the specific microstructure of the material. A frequently observed property in soft materials is yielding: the reversible transition of a material from solid-like deformation to fluid-like flow as the …
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Time-resolved linear and non-linear rheology of thixotropic and aging complex fluids: Application to particulate and biopolymeric physical gels
… rheometry consists of combining Small Amplitude Oscillatory Shear (SAOS) with a steady unidirectional shear rate to gain insight into the shear-induced changes to the viscoelastic properties of a complex fluid. Orthogonal superposition (OSP), in which the two modes of deformation are …
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Low dimensional intrinsic material functions uniquely identify rheological constitutive models and infer material microstructure
Made available in DSpace on 2013-02-03T19:18:23Z (GMT). No. of bitstreams: 2 Narayanan Ashwin Kumar_Bharadwaj.pdf: 5317555 bytes, checksum: 8997d27d51481208eef06a2a2f9726e6 (MD5) license.txt: 4082 bytes, checksum: 4d805d5496639ba3959b750fb2fc8438 (MD5)
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Novel Rheometric Techniques and Constitutive Models for Linear and Nonlinear Rheology: Applications to Polymeric Solutions and Colloidal Gels
… laws that relate the state of stress to the deformation history can be challenging due to their broad relaxation spectrum and time-varying (or “mutating”) material response. Part I of this thesis therefore deals with developing constitutive models relevant for polymeric solutions that exhibit …