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Structural Health Monitoring with Laser Doppler Imaging of Ultrasonic Guided Waves
This thesis deals with ultrasonic guided wave based non-destructive inspection and health monitoring of aircraft structural components using a non-contact sensing scheme based on laser Doppler scanning imaging technique. ...
Attenuation Characteristics and Seismicity Analysis of Himalayan Region with Linear Joint Time-frequency Analysis Techniques
About 59% of the land area of the Indian subcontinent has high chances of moderate to severe earthquakes, of which the Himalayas are the most seismically active. Regardless of the high seismic activity, the seismic network ...
Syngas Production by Methane Reforming and H2 Purification by CO Abatement over Transition Metal-Substituted Reducible Oxides
Methane and carbon dioxide are two major greenhouse gases, with CH4 having higher potency towards global warming. Several methods have been explored for transforming CH4 into higher value products, of which syngas production ...
Study of Solvent Induced Crystal Polymorphism via Molecular Simulations of Crystal Nucleation
The ability of a compound to exist in different crystal structures is called crystal polymorphism
and such crystals of varied spatial arrangement are called polymorphs. The polymorphic forms
can differ in their properties ...
Resonances and beats in nonlinear structural acoustic waveguides
In this thesis that is entirely analytical in nature, nonlinear wave propagation in various structural-acoustic waveguide geometries is studied. The waveguides considered include a circular cylindrical waveguide with a ...
Assessing the potential of stable calcium isotope ratios for paleotemperature reconstruction from studies of laboratory-precipitated inorganic carbonates and modern corals, fish otoliths and foraminifera
Determining paleo-seawater composition and temperature is critical for reconstructing Earth’s surface conditions through time and has major implications for understanding the origin and evolution of life on Earth. ...
Development of Seismic Design Spectra For Shallow and Deep Soil Sites Considering Region Specific Parameters
Earthquakes are among the deadliest in all the natural disasters and have affected
many people in the last few decades. The efforts to reduce or mitigate the impact of
earthquakes have become increasingly focused upon ...
Experimental Investigation of Fuel Drop Impact on Unheated and Heated Solid
The modelling of spray-wall interaction encountered in engine combustors relies heavily on studies of single drop impact on heated solid surfaces. In the present thesis, the impact of a single fuel drop on a hot, smooth ...
Development of PCM coupled heat pipe for space application
Axially grooved aluminium-ammonia heat pipes are extensively used for the thermal control of satellites. Heat pipes efficiently transfer waste heat from the electronic packages, housed inside the satellite, to thermal ...
Shock Dynamics due to Downstream Pressure Perturbations: Idealization of Transonic Unstarted Cascade Flutter
Shock wave unsteadiness is an important phenomenon in high-speed aerodynamics. This
phenomenon is observed in many locations of high-speed vehicles, such as supersonic inlets,
ramjet engines, transonic airfoils, high-speed ...