A5100599334- Mechanical Behavior of Composites
- Carbon Nanotubes in Composites
- Polymer Nanocomposites and Properties
- Corrosion Behavior and Inhibition
- Concrete Corrosion and Durability
- Smart Materials for Construction
- Polymer composites and self-healing
- Tribology and Wear Analysis
- Epoxy Resin Curing Processes
- Fiber-reinforced polymer composites
- Non-Destructive Testing Techniques
- Force Microscopy Techniques and Applications
- Engineering and Material Science Research
- Conducting polymers and applications
- Silicone and Siloxane Chemistry
- Mechanical and Optical Resonators
- Engineering Diagnostics and Reliability
- Gas Sensing Nanomaterials and Sensors
- Offshore Engineering and Technologies
- Fire effects on concrete materials
- Metal and Thin Film Mechanics
- Coal Combustion and Slurry Processing
- Cavitation Phenomena in Pumps
- Hydrogen embrittlement and corrosion behaviors in metals
- Concrete and Cement Materials Research
Defence Materials and Stores Research and Development Establishment
2024
Defence Research and Development Organisation
2024
Bhupendra Narayan Mandal University
2022
U.S. Army Engineer Research and Development Center
2006-2018
United States Army
2005-2018
Construction Engineering Research Laboratory
2002-2015
Tuskegee University
2014
United States Department of the Army
1987-2013
United States Army Corps of Engineers
2002-2012
Central Electronics Engineering Research Institute
2008
Low velocity impact damage is common in fiber reinforced composites, which leads to micro-crack and interfacial debonding, where microscopic invisible. The concept of self-healing composites can be a way overcoming this limitation extending the life expectancy while expanding their usage structural applications. In current study, extrinsic was adopted using urea-formaldehyde microcapsules containing room temperature curing epoxy resin system (SC-15) as healing agent prepared by situ...
Abstract The aim of this study is to investigate the optimum technique disperse Multi‐Walled Carbon Nanotubes (MWCNTs) in SC‐1 epoxy uniformly and evaluate effect processing on performance epoxy. To achieve better dispersion, MWCNT was mixed with resin directly or premixed a solvent then after evaporating using sonication, thinky mixing three‐roll mill methods either isolation combination. Flexural tests were performed mechanical performances results exhibit up 27.13, 13.51, 21.99%...
Effects of ultraviolet radiation and condensation on the static dynamic compressive properties composites with without nanoclay were investigated. Specimens exposed to (UV), alternate (UC) conditions for 5, 10, 15 days, respectively. Compression test results showed an increase in strength modulus strain rate weight percent loading. However, degraded upon conditioning infused systems showing less degradation. Scanning electron micrographs fractured samples show better interfacial bonding 2...
We report the effect of glass fiber structure and epoxy polymer system on flexural strength, interlaminar shear stress (ILSS), energy absorption properties fiber-reinforced (GFRP) composites. Four different GFRP composites were fabricated from two textiles fabric count strand density resin systems, a cycloaliphatic linear aliphatic system. These using vacuum-assisted transfer method. The ILSS data obtained three-point bending test following ASTM 790-10 D2344/D2344M standards. composite sheet...
Accelerated ageing experiments have been conducted to address durability issues of carbon/epoxy composites be used for emerging facilities and infrastructure, such as, bridges buildings, in different climatic zones. The degradation under UV, hygrothermal exposure, applied tensile stress has investigated. tests were designed capture the synergistic effects field exposure extreme temperatures, viz., hot/dry, hot/wet, cold/dry, cold/wet conditions. Short beam shear (SBST) performed...
In this work, thinky mixing method was used to disperse multi-walled carbon nanotubes (MWCNT's) and nanofibers (CNF's) in SC-1 epoxy either isolation or combination with 3-roll shear mixing. To achieve better dispersion, MWCNT resin directly pre-mixed a solvent then mixed after evaporating the solvent. Dynamic mechanical analysis (DMA), thermogravimetric (TGA), flexural tests, electrical conductivity tests micrographic were performed on neat, 0.2 0.4wt% MWCNT/CNF infused observe loading...
The dynamic mechanical behavior and high‐strain rate response characteristics of a functionally graded material (FGM) system consisting vertically aligned carbon nanotube ensembles grown on silicon wafer substrate (VACNT‐Si) are presented. Flexural rigidity (storage modulus) loss factor (damping) were measured with analyzer in an oscillatory three‐point bending mode. It was found that the VACNT‐Si exhibited significantly higher damping without sacrificing flexural rigidity. A Split‐Hopkinson...
A nanoscale sensor employing fluorescent resonance energy transfer interactions between quantum dots (QDs) and organic quencher molecules can be used for the multiplexed detection of biological antigens in solution. Detection occurs when to detected displace quencher-labelled inactivated (or dead) same type attached QD–antibody complexes through equilibrium reactions. This unquenches QDs, allowing take place observation photoluminescence solution or fluorescence imaging unquenched QD trapped...