Searched for: author:"Bhowmik, S."
(1 - 13 of 13)
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Akram, M. (author), Jansen, K.M.B. (author), Ernst, L.J. (author), Bhowmik, S. (author), Ajeesh, G. (author), Ahmed, S. (author), Chakraborty, D. (author)
This investigation highlights the effect of surface modification on polyimide by atmospheric pressure plasma treatment with different exposure time. Surface modification of polymer by plasma treatment essentially creates physical and chemical changes such as cross-linking and formation of free radicals. It also forms oxygen functionalization in...
journal article 2015
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Iqbal, H.M.S. (author), Stec, A.A. (author), Patel, P. (author), Bhowmik, S. (author), Benedictus, R. (author)
With increasing interest in epoxy-based carbon fiber composites for structural applications, it is important to improve the fire resistant properties of these materials. The fire resistant performance of these materials can be improved either by using high performance epoxy resin for manufacturing carbon fiber composite or by protecting the...
journal article 2013
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Akram, M. (author), Jansen, K.M.B. (author), Bhowmik, S. (author), Ernst, L.J. (author)
Titanium and its alloys are usually bonded together using a high temperature resistant polyimide or epoxy adhesives. Such adhesives can withstand temperatures from 200°C to300°C. Earlier research work indicates that Surface modification of titanium with mechanical treatment and atmospheric pressure plasma treatment techniques leads to improved...
conference paper 2012
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Bhatnagar, N. (author), Jha, S. (author), Bhowmik, S. (author), Gupta, G. (author), Moon, J.B. (author), Kim, C.G. (author)
In this work, the effect of low pressure plasma and atmospheric-pressure plasma treatment on surface properties and adhesion characteristics of high performance polymer, Polyether Ether Ketone (PEEK) are investigated in terms of Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and Atomic Force Microscopy ...
journal article 2012
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Akram, M. (author), Jansen, K.M.B. (author), Bhowmik, S. (author), Ernst, L.J. (author)
The high temperature resistant polymers and metal composites are used widely in aviation, space, automotive and electronics industry. The high temperature resistant polymers and metals are joined together using high temperature adhesives. Polyimide and epoxy adhesives that can withstand high temperature (200 °C-300 °C) are commonly used for...
conference paper 2011
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Akram, M. (author), Jansen, K.M.B. (author), Ernst, L.J. (author), Bhowmik, S. (author)
In this investigation surface treatment of titanium is carried out by plasma ion implantation under atmospheric pressure plasma in order to increase the adhesive bond strength. Prior to the plasma treatment, titanium surfaces were mechanically treated by sand blasting. It is observed that the contact angle of de-ionized water decreases with the...
journal article 2011
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Akram, M. (author), Bhowmik, S. (author), Jansen, K.M.B. (author), Ernst, L.J. (author)
It is noted that in search of long term and efficient service performance in the context of future generation of aerospace materials, there is increasing need of metal-high performance polymer composite. Based on these considerations, high temperature resistant polymeric sheet such as Polyimide Meldin7001 sheet, is joined with Titanium sheet by...
conference paper 2011
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Akram, M. (author), Bhowmik, S. (author), Jansen, K. (author), Ernst, L.J. (author)
Titanium is one of the most effective materials for structural application of space craft and aviation. Titanium alloys are widely used in solid rocket booster cases, guidance control pressure vessel and other different applications demanding light weight and reliability. Aerospace industry is also a larger market for titanium products and...
conference paper 2010
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Bhowmik, S. (author), Aaldert, P.J. (author)
The invention relates to a method for treatment of a surface area of steel by polishing said surface area and performing a plasma treatment of said surface area wherein the plasma treatment is performed at at least atmospheric conditions and wherein the plasma treatment is carried out at a power of approximately 300 W and for a duration of at...
patent 2009
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Bhowmik, S. (author), Poulis, J.A. (author), Benedictus, R. (author)
The invention relates to an epoxy resin adhesive comprising a dotation of nano-substances, wherein the nano- substances are selected from the group comprising carbon-fibre nanotubes, carbon nano-fibres, silicate nano powders, and wherein the nano-substances are dispersed in the adhesive with a weight ratio of at least 1% and wherein the nano...
patent 2008
document
Ghatak, K.P. (author), Bhattacharya, S. (author), Bhowmik, S. (author), Benedictus, R. (author), Choudhury, S. (author)
We study the Einstein relation for the diffusivity to mobility ratio (DMR) in quantum wires (QWs) of III-V, ternary, and quaternary materials in the presence of light waves, whose unperturbed energy band structures are defined by the three band model of Kane. It has been found, taking n-InAs, n-InSb, n-Hg1?xCdxTe, n-In1?xGaxAsyP1?y lattice...
journal article 2008
document
Park, S.O. (author), Moon, J.B. (author), Lee, Y.G. (author), Kim, C.G. (author), Bhowmik, S. (author)
It is widely known that materials exposed to the severe low earth orbit (LEO) environment undergo degradations. For the evaluation of fiber Bragg grating (FBG) sensors in the LEO environment, the reflective spectrum change and the Bragg wavelength shift of FBG sensor were measured during aging cycles simulating the LEO environment. The LEO...
conference paper 2008
document
Ghatak, K.P. (author), Bhattacharya, S. (author), Bhowmik, S. (author), Benedictus, R. (author), Choudhury, S. (author)
We study thermoelectric power under strong magnetic field (TPM) in carbon nanotubes (CNTs) and quantum wires (QWs) of nonlinear optical, optoelectronic, and related materials. The corresponding results for QWs of III-V, ternary, and quaternary compounds form a special case of our generalized analysis. The TPM has also been investigated in QWs of...
journal article 2008
Searched for: author:"Bhowmik, S."
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