Browsing Division of Mechanical Sciences by Title
Now showing items 1201-1220 of 1796
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Phase-field modeling of equilibrium shapes of precipitate and growth instabilities in the presence of coherency stresses
Precipitation-hardened alloys are one of the most technologically significant materials that are used for structural applications, where an important mode of strengthening is due to the impediment to the movement of ... -
A phenomenological one-dimensional model for elastic ribbons
Ribbons exhibit fascinating buckling-dominated behavior under mechanical loading because of a unique combination of geometric dimensions. The recent interest in examining engineering applications of ribbon-like structures ... -
Phononic bandgap engineering in cellular periodic structures and mechanical metamaterials
A methodology has been developed for the computation of phononic band structure of cellular periodic structures, structures with spatially repetitive patterns, using Frequency domain Spectral Finite Element Method along ... -
Photocatalytic and Photoelectrocatalytic systems for water remediation and energy applications
This PhD work consists of two main parts. The first part focuses on photocatalytic systems for water remediation from bacteria and phenolic compounds, and the second part deals with photoelectrocatalytic systems for biomass ... -
Physical controls of chlorophyll distribution in the North Indian Ocean
The north Indian Ocean is one of the highly productive regions among the tropical oceans. Being a prominent monsoon regime, the basin exists as a highly dynamic region charac- terised by intense mixing and upwelling and ... -
Physical insights into unstart dynamics of a hypersonic mixed compression intake
Hypersonic air-breathing cruise vehicles powered by supersonic combustion ramjet engines are the potential candidate for future space and defense applications. The air intake of the scramjet engine is a vital component ... -
A Physico-Chemical Approach in Binary Solid-State Interdiffusion
(2018-07-28)A physico-chemical approach (theory of dissociation and reaction) is developed, which can be used in binary diffusion couple to determine diffusion parameters of the product phases with wide homogeneity range, as well as ... -
Piezoceramic Dynamic Hysteresis Effects On Helicopter Vibration Control Using Multiple Trailing-Edge Flaps
(2009-07-14)Helicopters suffer from severe vibration levels compared to fixed-wing aircraft. The main source of vibration in a helicopter is the main rotor which operates in a highly unsteady aerodynamic environment. Active vibration ... -
Piezoelectric Micromachined Ultrasound Transducers : From Design to Applications
(2018-06-21)Ultrasonic sensors are well known for various applications such as NDT, ultrasound imaging, and proximity sensing. Conventional ultrasound transducers are bulky, work at notoriously high voltages, and consume significant ... -
Planar Fault Energies in L12 Compounds
High temperature metallic structural materials, such as Ni-base superalloys owe their strength to a two-phase microstructure consisting of an fcc matrix strengthened by intermetallic A3B type precipitates. The performance ... -
Plasmon Phonon Coupled Dynamics of Nanocrystalline Structures
This thesis is an attempt to understand the characteristics and responses of plasmon phonon coupled dynamics in nanocrystalline structures. An energy based Lagrangian formulation is developed with fundamental field quantities ... -
Plastic Deformation During Indentation Of Crystalline And Amorphous Materials
(2013-06-10)Indentation hardness, H, has been widely used to characterize the mechanical properties of materials for more than a century because of the following advantages of this technique; (1) it requires small sample and (2) the ... -
Platinum overlayers characterization and fabrication via self-terminating electrodeposition
Hydrogen is considered a promising alternative fuel for the future. However, despite its perception as a “zero-carbon” energy carrier, fossil fuels remain the primary feedstocks for hydrogen production, involving significant ... -
Polymer-based investigations into the surface chemistry of some sulphide minerals and the beneficiation of a low grade siliceous copper ore
Tanzania is endowed with rich mineral deposits containing gold, tanzanite, diamond, coal, uranium, iron ore, gemstones with low grade of the sulphide minerals namely chalcopyrite and pyrite. It is the third largest producer ... -
Polyvinylidene fluoride (PVDF) based Nanocomposites with Multi-layered Architecture Containing Core-shell Nanomaterials for Electromagnetic Interference Shielding
With the emergence of smart electronic devices, we have witnessed a rapid surge in the growth and subsequent drive-in for the miniaturization of electronic interfaces. Any electronic gadget that transmits, distributes, or ... -
Pore Forming Toxins : Unravelling Oligomerization Pathways and Related Kinetics
Pore forming toxins are a class of proteins secreted from a wide variety of pathogens. These toxins are implicated in several diseases such as cholera, anthrax, tuberculosis and food poisoning. The toxin proteins are ... -
Possible Chaos In Robot Control Equations
(2012-05-16)