Download or read book Electric Field Effects on the Rheology of Shear Thickening Colloidal Dispersions written by Sudhir S. Shenoy and published by . This book was released on 2003 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colloidal Suspension Rheology written by Jan Mewis and published by Cambridge University Press. This book was released on 2012 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented in an accessible and introductory manner, this is the first book devoted to the comprehensive study of colloidal suspensions.
Download or read book Theory and Applications of Colloidal Suspension Rheology written by Norman J. Wagner and published by Cambridge University Press. This book was released on 2021-04-15 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential text on the practical application and theory of colloidal suspension rheology, written by an international coalition of experts.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Particle Anisotropy on the Rheology and Microstructure of Concentrated Colloidal Suspensions Through the Shear Thickening Transition written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Though suspensions comprised of anisotropic particles are ubiquitous in industry, little has been done to elucidate the effects of particle anisotropy on concentrated suspension rheology, or the mechanism responsible for the reversible shear thickening observed in these systems. This dissertation explores the rheology and shear-induced microstructure of anisotropic particle suspensions through the shear thickening transition, and provides the first account of anisotropic particle alignment during shear thickening. For this investigation, Poly(ethylene glycol) (PEG)-based suspensions of acicular precipitated calcium carbonate (PCC) particles of varying particle aspect ratio (nominal L/D & sim; 2, 4, 7) are generated that demonstrate both continuous and discontinuous reversible shear thickening with increasing applied shear rate or stress. The critical volume fraction for the onset of discontinuous shear thickening decreases as the average particle aspect ratio is increased. However, the critical stress for shear thickening is found to be independent of particle anisotropy and volume fraction, and can be predicted based on the minor axis dimension of the particles in agreement with the critical stress scaling for hard-sphere suspensions. Small angle neutron scattering during shear flow (Rheo-SANS) demonstrates that long-axis particle alignment with the flow direction is maintained throughout the range of shear stresses investigated, including the shear thickening regimes for both continuous and discontinuous shear thickening PCC/PEG suspensions. Investigations of particle flow alignment following flow cessation provide evidence that the critical volume fraction for shear thickening may be associated with an isotropic-nematic transition within the anisotropic particle suspensions. Rheo-SANS investigations of concentrated kaolin clay suspensions demonstrate that disk-shaped particles exhibit particle alignment with the face surfaces orthogonal to the gradient direction during both continuous and discontinuous shear thickening. The critical stress at the onset of shear thickening for discontinuous shear thickening clay suspensions is observed to scale with the particle thickness dimension. The rheology and Rheo-SANS observations for both the acicular PCC and disk-like kaolin clay suspensions invalidate earlier hypothesis suggesting that shear thickening behavior in anisotropic particle dispersions results from increased particle rotations out of flow alignment potentially leading to particle jamming. Rather, the observations suggest that shear thickening in anisotropic particle suspensions is a consequence of short range hydrodynamic lubrication forces resulting in the formation of hydroclusters at higher shear rates, analogous to the behavior established for spherical particle suspensions. Lastly, anisotropic particle suspensions are used to successfully develop of shear thickening fluid (STF)/ballistic fabric composites. Shape anisotropy imparts the advantage of lower solids loading required to achieve energy dissipative improvements compared to spherical particle STFs. The observed improvements in ballistic and stab resistance response of these composites over that of ballistic fabrics alone suggests that they could potentially be used in the development of personal body armors with improved, multi-threat protective capabilities.
Download or read book Product Design and Engineering written by Ulrich Bröckel and published by John Wiley & Sons. This book was released on 2013-08-02 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the whole value chain - from product requirements and properties via process technologies and equipment to real-world applications - this reference represents a comprehensive overview of the topic. The editors and majority of the authors are members of the European Federation of Chemical Engineering, with backgrounds from academia as well as industry. Therefore, this multifaceted area is highlighted from different angles: essential physico-chemical background, latest measurement and prediction techniques, and numerous applications from cosmetic up to food industry. Recommended reading for process, pharma and chemical engineers, chemists in industry, and those working in the pharmaceutical, food, cosmetics, dyes and pigments industries.
Download or read book The Rheology and Roll to roll Processing of Shear thickening Particle Dispersions written by Sunilkumar Khandavalli and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle dispersions are ubiquitous in our daily lives ranging from food and pharmaceutical products to inks. There has been great interest in the recent years in formulation of functional inks to fabricate myriad flexible electronic devices through high-throughput roll-to-roll technologies. The formulations often contain several functional additives or rheological modifiers that can affect the microstructure, rheology and processing. Understanding the rheology of formulations is important for tuning the formulation for optimal processing. This thesis presents investigations on the rheology of particle dispersions and their impact on roll-to-roll technologies. Shear-thickening behavior is common in particle dispersions, particularly, concentrated particulate inks. We have investigated the elongational rheology of a shear-thickening particle dispersions. We find that, an optimal polymer concentration resulted in a strong strain-hardening behavior with a magnitude that is significantly larger than the shear-thickening magnitude. Understanding the non-linear viscoelastic behavior of materials is very important, as deformations in applications are typically large. The rheology of three shear thickening dispersions with different thickening mechanisms was studied. Strong differences in the viscoelastic non-linearities in the three shear-thickening dispersions were observed. We next study the impact of rheology of shear thickening particle dispersions in gravure printing and slot die coating processes. In gravure printing, an efficient transfer of ink from gravure cell to the substrate is desired to print patterns with good print quality for desired product performance. We have conducted a study on how a shear thickening rheology impacts the amount of ink transfer. Distinct ink transfer behaviors associated with an extensional thickening, and an extensional thinning of the test fluids were observed. In a slot-die coating process, obtaining highly thin uniform defect free films at high speeds is a challenge. We have investigated the role of shear-thickening rheology on the stability of coating and the process window. The onset of shear-thickening was found to reduce the maximum web speeds for stable coating through the evolution of a ribbing defect. The presented investigations on the rheology of particle dispersions and their influence on roll-to-roll processing behavior would enable tuning of ink formulations and optimizing the process parameters towards fabrication of flexible electronics.
Download or read book Rheology of Dispersions written by Tharwat F. Tadros and published by John Wiley & Sons. This book was released on 2011-07-18 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dispersion is a system of unmixable phases in which one phase is continuous and at least one is finely distributed. Examples are found in many industrial applications, including emulsions, suspensions, foams, and geld. The control of their flow characteristics - rheology - is essential in their preparation, long-term physical stability and application. Filling the need for a practical, up-to-date book connecting the stability/instability of the dispersion to its rheological behavior, this title aids in understanding the principles of rheology and the techniques that can be applied. From the contents: * General Introduction * Interparticle Interactions and Their Combination * Principles of Viscoelastic Behavior * Rheology of Suspensions * Rheology of Emulsions * Rheology of Modifiers, Thickeners, and Gels * Use of Rheological Measurements for Assessment and Prediction of the Long-Term Physical Stability of Formulations (Creaming and Sedimentation)
Download or read book Rheology and Microstructure of Concentrated Near Hard Sphere Colloidal Dispersions at the Shear Thickening Transition written by Brent J. Maranzano and published by . This book was released on 2001 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Rheology written by and published by . This book was released on 2006 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1995 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rheology written by Christopher W. Macosko and published by VCH Publishers. This book was released on 1994 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rheology: Principles, Measurements, and Applications will be of greatest interest to chemical engineers, chemists, polymer scientists, and mechanical engineers, as well as students in these and related fields.
Download or read book Shear Thickening Fluid written by Selim Gürgen and published by Springer Nature. This book was released on 2023-03-22 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shear Thickening Fluid: Theory and Applications provides a complete reference on shear thickening fluid (STF) and STF applications for engineers, researchers, and scientists. STF rheology is discussed in terms of several factors, including suspension medium, particle size, particle shape, and environmental conditions. Single-phase STF is discussed, and the novel concept of multi-phase STF is examined by considering various fillers in this smart fluid. Prominent applications of STF are categorized as multi-functional systems, adaptive damping devices, surface finishing operations, and protective structures, and the applications are described by discussing the smart behavior of STF.
Download or read book Aviation Fuels with Improved Fire Safety written by National Research Council and published by National Academies Press. This book was released on 1997-09-18 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reduction of the fire hazard of fuel is critical to improving survivability in impact-survivable aircraft accidents. Despite current fire prevention and mitigation approaches, fuel flammability can overwhelm post-crash fire scenarios. The Workshop on Aviation Fuels with Improved Fire Safety was held November 19-20, 1996 to review the current state of development, technological needs, and promising technology for the future development of aviation fuels that are most resistant to ignition during a crash. This book contains a summary of workshop discussions and 11 presented papers in the areas of fuel and additive technologies, aircraft fuel system requirements, and the characterization of fuel fires.
Download or read book Magnetorheology written by Norman Wereley and published by Royal Society of Chemistry. This book was released on 2014 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading experts provide a timely overview of the key developments in the physics, chemistry and uses of magnetorheological fluids.
Download or read book Electro rheological Fluids Magneto rheological Suspensions And Their Application Proceedings Of The 6th International Conference written by Kiyohito Koyama and published by World Scientific. This book was released on 1999-01-18 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrorheological (ER) fluids and magnetorheological (MR) suspensions show dramatic and reversible rheological changes when the electric or magnetic field is applied. Over the past several years, their performance and reliability have been significantly improved and their potential applications and acceptances have been widened. These fluids may make a tremendous impact on industry and technology.This volume contains a total of 107 papers which are most up to date and which give probably the best information on the state of the art of the ERF/MRS field. It covers the fields of material technology, mechanisms, bridging structure and properties on ER fluids, MR suspensions and ferrofluids, and the fields of their applications, i.e. damping devices, clutches, braking devices, actuators, optical devices, polishing devices and so on.
Download or read book Electric Field Induced Structure in Dense Colloidal Suspensions written by Kaye L. Smith and published by . This book was released on 1991 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
