Browsing by Author "Bhat Panemangalore, P."

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    Flexible Electromagnetic Shielding Material Using Multi-Walled Carbon Nanotube Coated Cotton Fabric
    (Institute of Electrical and Electronics Engineers Inc., 2022) Arun Kumar, D.S.; Tharehalli Rajanna, T.R.; Kandasamy, K.; Bhat Panemangalore, P.; Rahman, M.R.
    The present work focuses on the development of cotton fabric with multi-walled carbon nanotube coating (CMC) through a dip and dry process. The influence of multi-walled carbon nanotubes (MWCNTs) concentration on transmission, reflection, and absorption properties, which leads to an estimation of electromagnetic interference (EMI) shielding, was also studied. The merits of MWCNTs coating on the cotton fabric were evaluated using field-emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), and surface resistivity. The Fourier transform infrared (FTIR) spectroscopy result supports the bonding between MWCNTs and cotton fabric. The significant increase of 98.9% of EMI shielding for the highest MWCNTs weight percentage (22.23 wt%) was attributed due to the well-interconnected network of MWCNTs. The shielding mechanism in the high wt% MWCNTs samples is dominated by both reflection and absorption properties. © 2011-2012 IEEE.
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    Optimized Heat Transfer Rate in Cu/CNT Nano Composite Prepared by Electrodeposition Technique
    (Institute of Physics, 2023) Bharathi, K.D.; Rahman, M.R.; Yadav, A.K.; B.V., B.V.; Bhat Panemangalore, P.
    Highlights The Cu/CNT nanocomposites are successfully through electrodeposition technique. The composites fabricated with different diameters and concentrations of CNTs. The heat transfer rate measured and optimized CNT diameter in Cu/CNT composites. Optimization of CNT concentration in Cu/CNT composites. SEM micrographic features also carry the signature of in plane CNTs deposition. © 2023 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited
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    Surface Modification of 6xxx Series Aluminum Alloys
    (MDPI, 2022) Kuruveri, U.B.; Bhat Panemangalore, P.; Kuruveri, S.B.; John, M.; L Menezes, P.L.
    Due to their superior mechanical properties, formability, corrosion resistance, and lightweight nature, 6xxx series aluminum (Al) alloys are considered as a promising structural material. Nevertheless, the successful application of these materials depends on their response to the external environment. Recently, designers considered the surface properties an equally important aspect of the component design. Due to this concern, these alloys are subjected to varieties of surface modification methodologies. Many methodologies are explored to modify the 6xxx series Al alloys sur-faces effectively. These methods are anodizing, plasma electrolytic oxidation (PEO), cladding, friction stir processing, friction surfacing, melting, alloying, and resolidification using high energy beams, etc. This review work discusses some of these methods, recent research activities on them, important process variables, and their role on the final properties of the surfaces. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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    The cohesion strength of electrodeposited Zn/GO nanocomposite coating on stainless steel
    (Elsevier Ltd, 2025) Bharathi, K.D.; Udaya Bhat, K.; Bhat Panemangalore, P.; Arun Kumar, D.S.; Rahman, M.R.
    Graphene based nanocomposite coatings have incredible scope in enhancing the physical properties of composite materials. In this study, pure Zn and Zn/GO nanocomposite coatings were successfully prepared by electrodeposition technique on the SS304 stainless steel. The Zn/GO nanocomposite coatings were prepared by varying concentration of GO, coating time and CTAB ratio. The nanocomposite coatings were characterized by using the Field emission scanning electron microscopy (FESEM), X-ray diffractometry (XRD), Energy-dispersive X-ray spectroscopy (EDS), and Raman spectroscopy. Cohesion strength (LC) using scratch test at RT noticed that the LC values increased with the concentration of GO. The scratch tests revealed that Zn/GO composite produced using 40 mgL?1 GO had 70 % increase in cohesion strength (LC1) in comparison to pure Zn coating deposited with 30 min of coating time at a ratio of 1:2 GO:CTAB. The magnitude of the residual stress in the nanocomposite coating decreases from ?32 MPa (0 mgL?1 of GO) to ?11 MPa (40 mgL?1 of GO) as the GO concentration increases in coatings due to the effect of the kinetic movement of particles while deposition. © 2024