Mechanical Engineering (ME): Recent submissions
Now showing items 1-20 of 493
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Studies on fatigue corrosion and corrosion fatigue of ductile iron.
Ductile iron offers the combined advantages of good castability with high strength and toughness, and during the past few years has become one of the most widely used engineering materials. The failure of a component of ... -
Fatigue threshold-ductile iron.
An experimental investigation on the fatigue threshold of ductile iron was carried out. The influence of microstructure of the cast metal and stress ratio ranging between 0.10 and 0.50 was examined. Ductile iron, ASTM A ... -
Numerical simulation of laser melting of alloys.
Thesis title: The nucleocapsid protein N and the haemagglutinin protein H of rinderpest virus: Production, characterization of monoclonal antibodies and application to the study of longterm persistence of the virus in ... -
Boundary layer development on low aspect ration compressor blading of large camber
Modern methods of turbomachine through-flow calculation need estimates of flow blockage and energy loss along the stages. The latter estimates are made using boundary layer prediction schemes, which need to be tested under ... -
Chilling and feeding narrow freezing range alluminium alloy
A detailed investigation was carried out to study the solidification behaviour of narrow freezing range Aluminium-12% Silicon alloy (modified) - LM 6 plate and cylindrical castings cast in dry sand moulds, the feeding of ... -
Applications of scattered light photoelasticity to study the influence of elastic constants in fracture mechanics and contactstress problems
Among the different experimental methods available to explore the state of stress in a general three-dimensional body, photoelasticity occupies a primary position. However, the analysis of stresses in a general three-dimensional ... -
Experimental studies on extremely small scale vibrations of micro-scale mechanical and biological structures
Experimental vibration analysis of mechanical structures is a well-established field, with extensive literature on macro-scale structures in civil, mechanical, and aerospace engineering. However, the study of vibrations ... -
Effect of tensile prestrian on fatigue strength of a solution treated precipitation hardened Aluminium alloy and design and development of a plane and rotating bending fatigue testing machine
A versatile plane and rotating bending fatigue testing machine with continuously variable strain control has been designed and developed. Attachments for measurement of cyclic stress and cyclic strain have been developed ... -
Influence of Electric Field on the Global and Local Structure in the Ferroelectric Ceramic Na1/2Bi1/2TiO3 and its Solid Solutions with BaTiO3 and K1/2Bi1/2TiO3
Ferroelectric ceramics are promising materials for a wide range of piezoelectric applications, including high-permittivity dielectrics, sensors, transducers, actuators, and electro-optic devices. Among commercially viable ... -
Characterization of elemental boron synthesized by electrolytic method
8.1 Synthesis and Characterization of Electrodeposited Elemental Boron Process parameters for large-scale production of elemental boron via molten salt electrolysis were established. Both “raw boron” and “processed ... -
Grain Boundary Sliding In Bicrystals: Experiments and Atomistic Simulations
This Ph.D. dissertation investigates the influence of tension and compression loading on grain boundary sliding (GBS) using creep experiments and atomistic simulations. Grain boundary sliding (GBS) is defined as the ... -
Some investigations on the use of ultrasonics in hydrodynamic cavitation control
Ultrasonic Control of Hydrodynamic Cavitation: Experimental and Theoretical Studies Abstract and Synopsis Introduction This thesis investigates the possibility of using ultrasonics to control hydrodynamic cavitation. ... -
Analytical studies of nonliner non autonomous systems
This thesis presents the results of some analytical studies in the field of non linear analysis. The main aim of this research has been to develop analytical methods leading to closed form solutions of the governing ... -
A Finite Element and Experimental Investigation of Specimen Geometry and Constraint Effects On Mixed Mode Ductile Fracture Initiation
In practical situations, the loading experienced at the tip of a crack in a structural component can be complex, involving combinations of modes I, II and III. The main objective of this thesis is to examine the applicability ... -
Experiments and modeling studies on the gasification of wood-char
In this chapter, the experimental data on the reactivity of wood char spheres with steam at high temperatures are presented. The earlier model is extended to include both kinetic and transport aspects of char-steam ... -
Extending PNQ6X1 to quadrilaterals with curved edges
Extension of Quadrilateral Finite Elements for Arbitrarily Curved Edges Abstract Introduction Two-dimensional finite elements have been in existence for almost half a century. Despite their drawbacks, they have served ... -
Numerical study of constraint effects on dynamic ductile crack initiation
Dynamic Loading Effects on Fracture Toughness and Crack Tip Constraint in Engineering Alloys Abstract and Synopsis Introduction In many engineering applications, materials are subjected to highly dynamic loading. ... -
Wear and seizure of aluminium - silicon alloys in dry sliding against steel
Aluminium-Silicon cast alloys have gained popularity as compared to iron-based materials as a candidate for internal combustion engine components such as cylinder liners, pistons and cylinder heads. This is primarily because ... -
Form feature generation model for features technology
The essence of CAD driven automation lies in modelling the interaction between geometry and domain knowledge. The concept of features and the area of features technology evolved to model this interaction. Feature definitions ... -
Dynamic crack growth at a ductile-brittle interface
In recent years, there has been increasing technological application of multi-phase materials like composites, cermets and polycrystalline alloys. These materials fail, most commonly, by debonding of the constituent phases ...