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    Browsing Materials Engineering (MatEng) by Advisor "Kumar, Praveen"

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      • Comprehensive Investigation of the Mechanical Behavior of Nial-x (X=pt, Pd) Alloys: Effect of Composition, Orientation and Temperature 

        Tripathi, Ananya
        Gas turbine engines in the turbine section operate at temperatures exceeding 1300°C, which can cause high-temperature oxidation and reduce the lifespan of turbine blades. To counter this, thermal barrier coating (TBC) ...
      • Diffusion-Controlled Growth of Phases in Metal-Tin Systems Related to Microelectronics Packaging 

        Baheti, Varun A (2018-08-28)
        The electro–mechanical connection between under bump metallization (UBM) and solder in flip–chip bonding is achieved by the formation of brittle intermetallic compounds (IMCs) during the soldering process. These IMCs ...
      • Effect of Electric Current Pulses on Pre-cracked Thin Metallic Conductors: From Crack Propagation to Healing of Cracks 

        Telpande, Swanand
        Both scientifically and technologically, it is important to investigate the effects of electric current on the structural integrity of metallic components. As an electric current reverses its direction across a crack, ...
      • Effect of High-Pressure Torsion and Natural Ageing on Hardness, Electrical Resistivity and Fatigue Properties of Commercially Pure Cu 

        Rijal, Ajay
        Commercially pure Cu was processed through high-pressure torsion (HPT) at a pressure of 6 GPa starting from ¼ up to 50 turns. These samples were then naturally aged for 1.75 years under the laboratory condition. Subsequently, ...
      • Effect of Length Scale on High Temperature Mechanical Behavior of Sn-Cu Joints: A Mechanics and Material Science Based Treatment 

        Kanjilal, Anwesha
        With the ongoing miniaturization of microelectronic devices, the size of compliant solder in microscale solder joints has significantly reduced, proportion of brittle phases has increased, and the microscale joints have ...
      • Effect of Processing Mg-6zn-0.2ce Through High-pressure Torsion on Its Use as a Biomaterial 

        Upadhayay, Lochan
        Here, we investigate the effect of high-pressure torsion (HPT), a severe plastic deformation process, on the mechanical properties, corrosion, and cytotoxicity of Mg-6Zn-0.2Ce alloy, a candidate material for bioresorbable ...
      • Effect of Sintering on Microstructure and Mechanical Properties of Air Plasma Sprayed 7 wt.% Y2O3 Stabilized ZrO2 

        Lal, Devi
        Air plasma sprayed (APS) 7 wt.% Y2O3 stabilized ZrO2 (7YSZ) coating is conventionally used for thermal insulations (in form of thermal barrier coating, TBC) in various hotter sections of land-based gas turbine engines and ...
      • Evaluation of Low-stress High-temperature Creep: Insights into the Harper-dorn Creep 

        Singh, Shobhit Pratap
        The theory of creep behavior of single crystals and polycrystalline materials having large grains at very low-stresses and at very high temperatures, as originally proposed by Harper and Dorn in 1957, has been under constant ...
      • Evaluation of Power-Law Creep in Bending 

        Jalali, Syed Idrees Afzal
        Materials for engineering components operating at high temperatures during their service like rockets, aero-turbines, automobile engines, nuclear power plants, steam power plants and micro-electronics are often designed ...
      • Extraction of Bond Coat Mechanical Properties using High- Temperature Digital Image Correlation 

        Kumar, Sachin
        Gas turbine engines used in aircraft or power generation widely use nickel-based superalloys in their hot sections such as combustion chambers, turbine blades, etc. These components in the hot section use thermal barrier ...
      • Extraction of Creep Parameters from Indentation Creep Experiment: An Artificial Neural Network- Based Approach 

        Mahat, Raj Jung
        Conventional methods for extracting creep properties require conducting several uniaxial tests at different loads, which consumes an intensive amount of material and time. Indentation may minimize the material volume ...
      • High-Throughput Bending Tests for Investigating Creep Behavior Affected by Structural and Microstructural Inhomogeneities 

        Hijazi, Faizan
        The bending of cantilevers is an alternate technique for the extraction of power-law creep parameters of materials. It has been shown earlier that in homogeneous systems showing tension-compression symmetry, digital image ...
      • Mass Transport in Cu-Interlayer-Si Systems under Various Thermo-Electro-Mechanical Excursions 

        Somaiah, Nalla
        This work falls in general area of the electro-thermo-mechanical driven mass transport in Cu-Si systems, which often finds relevance while accessing reliability issues pertaining to thin film interconnects in microelectronic ...
      • Mechanical Reliability of Metal-Si Systems at different Length scales under Thermal Cyclic Loading 

        Sonawane, Dipali
        Metal structures of nanometer to micrometer sizes in different configurations, such as thin films, thick coatings and 3D interconnects, are widely used for conducting electrical signals in several semiconductor-based ...
      • Numerical Simulations on the Indentation Behaviour of Shape Memory Alloys 

        Jaganathan, Anuja
        Shape Memory Alloys (SMAs) are increasingly being used as micro actuators, sensors, as self expanding cardiovascular stents and in MEMs based devices because of their ability to recover large values of imposed strain. ...
      • Synergistic Effect of Electromagnetic Forces on the Failure of Pre-Cracked Thin Metallic Conductors 

        Sharma, Deepak
        Finite element method (FEM) simulations were performed, and distributions of current density, electromagnetic force, and stress fields due to the self induced electromagnetic forces were evaluated in a pre-cracked thin ...

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