Browsing Division of Mechanical Sciences by thesis submitted date"2014"
Now showing items 21-40 of 73
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Flow and Windage Heating in Labyrinth Seals
(2017-11-24)The ability to quantify leakage flow and windage heating for labyrinth seals with honeycomb lands is critical in understanding gas turbine engine system performance and predicting its component lifes. Variety of labyrinth ... -
Flutter Susceptibility Assessment of Airplanes in Sub-critical Regime using Ameliorated Flutter Margin and Neural Network Based Methods
(2018-02-17)As flight flutter testing on an airplane progresses to high dynamic pressures and high Mach number region, it becomes very difficult for engineers to predict the level of the remaining stability in a flutter-prone mode and ... -
Fracture and Deformation in Bulk Metallic Glasses and Composites
(2018-01-11)Plastic flow in bulk metallic glasses (BMGs) localizes into narrow bands, which, in the absence of a microstructure that could obstruct them, propagate unhindered under tensile loading. In constrained deformation conditions ... -
Fracture Behaviour including Size Effect of Cement Stabilised Rammed Earth
(2018-01-30)Rammed earth is a monolithic construction formed by compacting processed soil in progressive layers. Rammed earth is used for the construction of load bearing walls, floors, sub base material in roadways, airport runways, ... -
Frequency-Tuning and Dynamic Simulation of Electrostatically Actuated Beams
(2018-01-03)The resonance frequency of electrostatically actuated micromachined beams can be tuned substantially by applying a DC voltage bias, first by decreasing the frequency until the onset of pull-in and then by increasing it by ... -
Generation, Characterization and Control of Nanoscale Surface Roughness
(2018-01-11)Surface roughness exists at many length scales-from atomic dimensions to meters. At sub-micron scale, the distribution of roughness is largely dependent on the process that generates the surface through the mechanisms of ... -
Granular Media Supported Microbial Remediation of Nitrate Contaminated Drinking Water
(2018-01-11)Increasing nitrate concentration in ground water from improper disposal of sewage and excessive use of fertilizers is deleterious to human health as ingestion of nitrate contaminated water can cause methaemoglobinemia in ... -
Ground Improvement using 3D-Cellular Confinement Systems : Experimental and Numerical Studies
(2018-01-09)The various aspects of the 3D cellular confinement systems (geocells) subjected to static loading are comprehensively studied with the help of experimental and numerical studies. The performances of the geocells were ... -
High Resolution Reconstruction of Rainfall Using Stable Isotopes in Growth Bands of Terrestrial Gastropod
(2017-10-25)Reconstruction studies of seasonal rainfall utilizing stable isotope based proxy approach suffer from the limitations of time resolutions. Conventional methods and archives limit the achievable resolution to annual scales. ... -
High Resolution Reconstruction of Rainfall Using Stable Isotopes in Growth Bands of Terrestrial Gastropod
(2017-10-25)Reconstruction studies of seasonal rainfall utilizing stable isotope based proxy approach suffer from the limitations of time resolutions. Conventional methods and archives limit the achievable resolution to annual scales. ... -
Hydrologic Impacts of Climate Change : Detection and Attribution
Detecting, quantifying, and modelling the effects of human-induced climate change in regional hydrology is important for studying the impacts of such changes on the water resources systems as well as for reliable future ... -
Impacts of Climate Change on IDF Relationships for Design of Urban Stormwater Systems
(2018-01-29)Increasing global mean temperature or global warming has the potential to affect the hydrologic cycle. In the 21st century, according to the UN Intergovernmental Panel on Climate Change (IPCC), alterations in the frequency ... -
Large Eddy Simulation of Free and Impinging Subsonic Jets and their Sound Fields
(2018-02-27)Evaluating aerodynamic noise from aircraft engines is a design stage process, so that it conform to regulations at airports. Aerodynamic noise is also a principal source of structural vibration and internal noise in ... -
Length Scale Effects in Deformation of Polycrystalline Nickel
(2017-09-20)The demand for compact, efficient and high performance electronic devices and sensor systems has become one of the primary driving force for rapid advancement in miniaturization of current technology. However, the attempt ... -
Methodologies for Assessment of Impact Dynamic Responses
(2017-11-24)Evaluation of the performance of a product and its components under impact loading is one of the key considerations in design. In order to assess resistance to damage or ability to absorb energy through plastic deformation ... -
Microgravity Flow Transients in the Context of On-Board Propellant Gauging
(2018-02-15)It is well known that surface tension of a liquid has a decisive role in flow dynamics and the eventual equilibrium state, especially in confined flows under low gravity conditions and also in free surface flows. One such ... -
Microstructural, Mechanical and Oxidation Behavior of Ni-Al-Zr Ternary Alloys
(2018-01-09)The thesis introduces a novel alloy system based on submicron distributions of intermetallic phases realised through eutectic solidification in the ternary system Ni-Al-Zr. Various compositions in this system comprising ... -
Modeling and Analysis of Water Distribution Systems
(2018-01-09)In most of the urban cities of developing countries piped water supply is intermittent and they receive water on alternate days for about few hours. The Unaccounted For Water (UFW) in these cities is very high due to aged ... -
Modeling of Solar Radiation Management : A Comparison of Simulations using Reduced Solar Constant and Stratospheric Aerosols
(2017-11-22)The climatic effects of Solar Radiation Management (SRM) geoengineering have been often modeled by simply reducing the solar constant. This is most likely valid only for space sunshades and not for atmosphere and surface ... -
Molecular Simulation of Anisotropic Stress and Structure in polymers
(2018-02-15)This dissertation presents a numerical study using molecular dynamic simulations that interrogates the polymer structure as it is strained continuously in time and correlates it with the stress developed in it. We investigate ...