A5026146584- Physics of Superconductivity and Magnetism
- Structural Response to Dynamic Loads
- Energetic Materials and Combustion
- Ultrasound and Cavitation Phenomena
- High-Velocity Impact and Material Behavior
- Combustion and Detonation Processes
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Superconductivity in MgB2 and Alloys
- ZnO doping and properties
- Semiconductor materials and interfaces
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Particle accelerators and beam dynamics
- Organic Electronics and Photovoltaics
- Electron and X-Ray Spectroscopy Techniques
- Transition Metal Oxide Nanomaterials
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Conducting polymers and applications
- Magnetic and transport properties of perovskites and related materials
- Cellular and Composite Structures
- Fluid Dynamics Simulations and Interactions
- Magnetic properties of thin films
- Heat Transfer Mechanisms
The Sanskrit College and University
2023-2024
Lala Lajpat Rai University of Veterinary and Animal Sciences
2023
ICAR - Central Island Agricultural Research Institute
2023
Maharaja Engineering College
2019-2022
Bhabha Atomic Research Centre
2005-2019
J.C. Bose University of Science & Technology, YMCA
2019
Subharti Medical College
2019
University of Rhode Island
2011-2018
Reliance Industries (India)
2018
Bhabha Atomic Research Center Hospital
2002-2016
The physical processes associated with the implosion of cylindrical tubes in a hydrostatic underwater environment were investigated using high-speed three-dimensional digital image correlation (3D DIC). This study emphasizes visualization and understanding real-time deformation implodable volume fluid–structure interaction phenomena. Aluminium 6061-T6 used as volumes. Dynamic tourmaline pressure transducers placed at selected locations to capture history generated during each event. A series...
The mechanisms and pressure fields associated with the hydrostatic implosion of glass fiber reinforced polymer (GFRP) tubes varying reinforcement are investigated using high-speed photography. Experiments conducted in a large vessel, designed to provide constant throughout collapse. Three-dimensional (3D) digital image correlation (DIC) is used capture full-field displacements, dynamic transducers measure pulse generated by Results show that braided GFRP release waves significantly greater...
A series of experiments were conducted to determine the Johnson–Cook parameters for three different cast aluminum alloys, namely, A356, A357, and F357. Room temperature compression performed under varying rates loading ranging from 10−3 s−1 5000 s−1. High (235 °C 435 °C) at an average strain rate split Hopkinson pressure bar (SHPB) apparatus was utilized in conjunction with induction coil heating system applying dynamic elevated temperatures. In addition, high tensile using SHPB apparatus,...
An experimental study on the underwater buckling of composite and metallic tubes is conducted to evaluate compare their collapse mechanics. Experiments are performed in a pressure vessel designed provide constant hydrostatic through collapse. Filament-wound carbon-fiber/epoxy, glass/polyester (PE) tubes, aluminum studied explore effect material type structural failure. Three-dimensional digital image correlation (DIC) technique used capture full-field deformation velocities during implosion...
We demonstrate the ability to excite and monitor many whispering gallery modes (WGMs) of a microsphere resonator simultaneously in order make broadband optical absorbance measurements. The 340 microm diameter is placed microfluidic channel. A hemispherical prism used for coupling WGMs into out microsphere. flat surface seals slight nonsphericity results precessed whose emission spatially separated from reflected excitation light. evanescent fields light trapped interact with surrounding...
The fluid structure interaction phenomenon occurring in confined implosions is investigated using high-speed three-dimensional digital image correlation (DIC) experiments. Aluminum tubular specimens are placed inside a confining cylindrical that partially open to pressurized environment. These hydrostatically loaded until they naturally implode. implosion event viewed, and recorded, through an acrylic window on the structure. velocities captured DIC synchronized with pressure histories...
Thermoelectric power generators (TEGs) based on Seebeck effect convert waste heat into electricity. However, the practical applications of such TEGs are limited by their low output DC voltage (10–300 mV). Therefore, a self powered DC-DC booster circuit is highly essential to integrate with for commercial use. In this work, we demonstrate amplify delivered PbTe/TAGS-85 TEG which consists 4 p-n couples alternately connected electrically in series and thermally parallel. Design includes an...
A comprehensive experimental/numerical study on the implosion of longitudinally off-centered cylindrical implodable volumes was conducted within a tubular confining space. In particular, aim this to examine changes in mechanics and nature pressure waves, arising from location volume. Experiments were with 31.8 mm outer diameter, aluminum 6061-T6 placed concentrically tube. Three longitudinal offset locations chosen tube, such that distance center volume tube is equal to: (a) zero, (b) 3/7...
Strong single-wall carbon nanotubes (SWNTs) possess very high stiffness and strength. They have potential for use to tailor the material design reach desired mechanical properties through SWNT nanocomposites. Layer-by-layer (LBL) assembly technique is an effective method fabricate SWNT/polyelectrolyte nanocomposite films. To determine relationship between constituents of SWNT/polymer nanocomposites made by LBL technique, a has been developed extend recent work Liu Chen (Mech. Mater., 35, pp....