Shantanu Bhowmik

Shantanu Bhowmik
Amrita Vishwa Vidyapeetham | AMRITA · Department of English

About

76
Publications
12,185
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963
Citations
Citations since 2017
9 Research Items
524 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100

Publications

Publications (76)
Article
This work investigates the development of ultra‐lightweight, hybrid fireproof composite material. The composite panels are made of 2,5‐polybenizimidazole (ABPBI) a thermally stable high‐performance fiber and poly ether ketone (PEK) a high‐performance film. The surface of ABPBI fiber and PEK film were treated by nitrogen plasma to increase the adhes...
Article
The study involves the processing of a novel poly [1, 4-phenylene-cis-benzobisoxazole] (PBO) fibre reinforced high-temperature thermoplastic composite with polyaryletherketone (PAEK) as the matrix. The PBO fibre and the PAEK film surface was modified using the method of argon and nitrogen plasma treatment. The investigation primarily focuses on eva...
Article
This study involves the development and thermo‐mechanical characterization of the individual, binary, and ternary nanocomposites using radiation resistant fillers like boron carbide (B4C), tungsten carbide (WC), and functionalized multi‐walled carbon nanotubes (F‐MWCNT) in a high performance polymer, namely, poly aryl ether ketone (PAEK). Transmiss...
Article
Full-text available
In the present study a high performance polymer poly aryl ether ketone (PAEK) is reinforced with micro and nano boron carbide (B4C) and functionalized multi walled carbon nanotubes (F-MWCNT) to investigate the individual and hybrid effect of the fillers. Optical microscopy and transmission electron microscopy suggested the dispersion of micro and n...
Article
Full-text available
This investigation highlights on surface modifications and adhesive bonding of aluminium. The surface of aluminium substrate is modified by magnetron sputtering and nanoparticle reinforcements are employed into the adhesive and their effects on adhesive strength is examined. Due to the concern of durability of aluminium surface, adhesive joints are...
Article
In this investigation, an attempt has been made on the synthesis of epoxy-novolac IPN adhesive simultaneously by using full interpenetrating polymer network (IPN) technique. Novolac resin is mixed in different weight ratios with respect to epoxy resin. Thereafter, both the resins are cross-linked with their respective cross linker agents simultaneo...
Article
Full-text available
This investigation highlights different surface functionalization processes of Carbon Nano Fibres (CNF's) and their effects on mechanical properties of Polyetherketone (PEK) nano composite. Surfaces of CNF's were modified by low pressure plasma process. There is a significant change in physico-chemical characteristics of CNF's after low plasma trea...
Article
Full-text available
In Present study, characteristic behavior of PBI as a protective coating for aircraft application is presented. Performance of PBI coating is evaluated after exposure to hot wet environment and liquid immersion. Critical properties including hardness, scratch resistance and adhesion of PBI coating are assessed and results are presented. M21 epoxy b...
Article
This investigation highlights rationale of electrically conductive nano adhesives for its essential application for Electromagnetic Interference (EMI) Shielding in satellites and Lightning Strike Protection in aircrafts. Carbon Nano Fibres (CNF) were functionalized by electroless process using Tollen's reagent and by Plasma Enhanced Chemical Vapour...
Article
This study focuses on analysing the durability of adhesive bonds formed in samples of Aluminium 6063, Titanium Nitride deposited Al 6063 and Anodized Al 6063 using epoxy adhesive Weicon A. Two types of studies are performed, first, samples of Aluminium 6063, Titanium Nitride deposited Al 6063 and Anodized Al 6063, are bonded by an epoxy adhesive We...
Article
This investigation demonstrates the deposition of copper and titanium nitride on a polymeric composite using physical vapor deposition (PVD) to increase the thermoelectrical properties of the composite. The physicothermal characteristics of the polymeric composite and conductive polymeric composite were characterized using field electron scanning e...
Article
Full-text available
This investigation essentially highlights development of novel high-performance fire-resistant polymeric nanocomposite with respect to its orientation towards future generation aviation. Therefore, an attempt has been made to increase thermal stability and fire resistivity of phenolic/cotton fabric reinforced polymer composite, which is desirable f...
Article
This investigation highlights the influence of plasma modified carbon nano fiber (CNF) on the various properties of poly ether ketone (PEK). CNFs were modified with oxygen plasma under low pressure to enhance the interfacial adhesion between the reinforcement and matrix. Significant changes are evident in the elemental composition of oxygen and car...
Article
This investigation highlights the rationale of adhesive bonding of atmospheric pressure plasma treated high temperature resistant polymeric sheet such as polyimide sheet (Meldin 7001), with titanium sheets. The surface of polyimide (PI) sheet was treated with atmospheric pressure plasma for different exposure times. The surface energy was found to...
Article
This investigation highlights rationale of solvent bonding and adhesive bonding for fabrication of a transparent polymer such as polycarbonate with a high-throughput process. Studies under ultra violet spectra and visible spectra reveal that in comparison with adhesive bonding of a polymer, solvent diffusion bonding is more transparent. Polycarbona...
Article
In this investigation, an attempt has been made to improve the interfacial adhesion characteristics of titanium (Ti) surface at elevated temperature and in aqueous salt solution. In order to ensure the presence of titanium oxide coating on the surface of titanium, anodization on titanium was carried out by sodium hydroxide. This oxide coating etche...
Article
Full-text available
In this article, we highlight the various properties of an ultralightweight poly(ether ketone) (PEK) composite. In this study, special emphases were laid on the preparation of low-density, high-performance polymeric foams with foaming agents and activators. PEK, foamed PEK, and carbon nanotube (CNT)–reinforced foamed PEK composites were considered...
Article
This investigation highlights rationale of vaporized solvent bonding for fabrication of transparent polymers such as polymethyl methacrylate (PMMA) in terms of optical transparency and bond strength. Vaporized solvent bonding is employed to fabricate the polymer, and its bonding characteristics with appropriate solvents are analyzed. It is observed...
Article
Polybenzimidazole is a recently emerged high-performance polymer exhibiting excellent thermal and mechanical properties. Because of the nature of the chemical structure of polybenzimidazole, it has great potential to be used as high-temperature radiation-resistant material for applications in space environment. In this context, a study is performed...
Article
This investigation highlights the effect of radiation, chemical and thermal environments on mechanical and thermal properties of Polyetheretherketone (PEEK) composites, which could prove to be an alternative material for long term storage of nuclear wastes. The tests are conducted on specimens made from PEEK and PEEK reinforced with carbon short fi...
Article
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 the...
Chapter
The chapter gives a brief introduction of adhesive bonding technology. Emphasis is placed on understanding of the fundamental mechanisms of bonding. Various types of adhesives are compared, and the techniques to modify polymer surface for improving the adhesion strength are described in detail. Examples are given to show important applications of a...
Article
Full-text available
This paper investigates the repair of polymer matrix composites and validates the repair by static testing. Scarf repair is carried out on the laminates and cured under vacuum. It is observed that 80% of tensile strength is recovered due to this process. Therefore, this investigation highlights the significance of atmospheric pressure plasma treatm...
Article
This investigation highlights different surface functionalization processes of multi-walled carbon nanotubes (MWCNTs) and their effects on mechanical properties of polyetherimide nanocomposite. Surfaces of MWCNTs were modified by chemical process and by low-pressure plasma process. There is a significant change in physicochemical characteristics of...
Article
This investigation highlights the adhesion characteristics of unmodified and titanium nitride deposited aluminium. Due to titanium nitride deposition on aluminium, surface energy, especially the polar component of surface energy of aluminium, increases considerably. There is a significant change in physicochemical characteristics due to titanium ni...
Article
This investigation highlights rationale to synthesize epoxy-novolac adhesive by novel interpenetrating network (IPN) technique. Physicochemical characteristics of the plain adhesive and IPN adhesive were carried out by Fourier transform infrared spectroscopy and thermal gravimetric analysis. Performing lap-shear test carried out plasma-nitrided tit...
Article
Full-text available
This investigation highlights the influence of plasma nitriding on titanium surface in order to improve its interfacial adhesion strength with epoxy and epoxy nanocomposites adhesive. Surface energy of titanium increases considerably due to plasma nitriding implantation. X-ray photoelectron spectroscopy studies indicate the formation of various tit...
Article
The use of adhesive bonding for high temperature applications is becoming more challenging because of low thermal and mechanical properties of commercially available adhesives. However, the development of high performance polymers can overcome the problem of using adhesive bonding at high temperature. Polybenzimidazole (PBI) is one such recently em...
Article
Physico-chemical changes of the plasma modified titanium alloy [Ti-6Al-4V] surface were studied with respect to their crystallographic changes by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM).The plasma-treatment of surface was carried out to enhance adhesion of high performance nano reinforced epoxy adhesive, a phenomenon that was...
Article
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 previou...
Article
This investigation highlights the processing of Nylon 66 and the incorporation of nano-silicate into the Nylon 66 polymeric matrix. Further, radiation modification of Nylon 66 and nano-silicate dispersed Nylon 66 was carried out in order to essentially alter the physicochemical properties of the material. A combination of both the above methods of...
Conference Paper
Full-text available
Titanium and its alloys are usually bonded together using a high temperature resistant polyimide or epoxy adhesive. Earlier research work indicates that Surface modification of titanium with mechanical treatment and atmospheric pressure plasma treatment techniques leads to improved adhesive bond strength of polyimide with titanium at room temperatu...
Article
This paper highlights effects of atmospheric pressure plasma treatment on adhesive joints of poly (ether ether ketone) (PEEK) fabricated with high temperature resistant epoxy adhesive and nano-adhesive, i.e., by dispersing carbon nanofibers (CNFs) into the adhesive matrix. Thermogravimetric analysis (TGA) demonstrates that there is an increase in t...
Article
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 (AFM)...
Article
In this investigation attempts have been made to modify the surface characteristics of titanium in order to increase the adhesion of high performance epoxy based nano adhesive which in turn would help in fabricating a high heat resistant weather proof high performance laminate with prolonged durability meant for aerospace application. The surface m...
Conference Paper
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 joining...
Article
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 gri...
Article
This investigation highlights fabrication of ultra-high temperature resistant polymers such as polybenzimidazole (PBI) by high-performance nano-adhesive. High-performance nano-adhesive is prepared by dispersing carbon nano-fibers into ultra-high temperature resistant epoxy adhesive. Prior to fabrication of PBI, the surface of PBI is ultrasonically...
Article
Multi-wall carbon nanotube (MWNT) added carbon fiber reinforced plastics (CFRP) and thin-ply composites are suggested as solutions to improve resistance against low earth orbit (LEO) environment and mechanical properties. Accelerated ground simulation experiments were performed for CFRP, MWNT reinforced CFRP, thin-ply CFRP and MWNT reinforced thin-...
Article
PEEK (polyether etherketone) polymer, is increasingly used in many industrial applications as a replacement for metal components. In this investigation, attention is given to understand the chemical changes that have been introduced on the surface of PEEK, when surface of the PEEK is modified by low pressure plasma under RF (radio frequency) glow d...
Article
Full-text available
In this investigation, efforts were given to develop carbon-nanofiber-reinforced polybenzimidazol nanocomposite for space application. Processing of polybenzimidazol was carried out by using polybenzimidazol in powder and solution forms. Thermomechanical properties of compression-molded polybenzimidazol, unfilled polyhenzimidazol films, and nanofib...
Article
High performance polymer, Polyether Ether Ketone (PEEK) (service temperature −250°C to +300°C, tensile strength: 120 MPa) is gaining significant interest in aerospace and automotive industries. In this investigation, attention is given to understand adhesion properties of PEEK, when surface of the PEEK is modified by two different plasma processes...
Article
In this investigation, the effects of atmospheric pressure plasma treatment on the surface energy of polyetheretherketone (PEEK), carbon fibers (CF) and glass fiber (GF) reinforced polyphenylene sulfide (PPS) are studied. A substantial improvement in the surface energy of these materials is observed after the atmospheric plasma treatment. It is obs...
Article
Novel carbon nanofiber (CNF) -filled bismalemide composites were fabricated by a thermokinetic mixing method. The thermal and mechanical properties of composites containing 1 wt % and 2 wt % CNFs were investigated. Thermogravimetric analysis demonstrated that minimal improvement in thermal stability of the nanocomposites was obtained by the additio...
Article
This investigation highlights the adhesion performance of carbon fiber- and glass fiber-reinforced polyphenylene sulfide when joined by high-performance neat epoxy adhesive and nanofilled epoxy adhesive. A significant increase in the surface energy of these materials is observed after the surface modification with atmospheric plasma treatment. An i...
Conference Paper
Full-text available
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 emp...
Conference Paper
Full-text available
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 adhesive...
Article
Novel carbon nanofiber (CNF) -filled bis-malemide composites were fabricated by a thermokinetic mixing method. The thermal and mechanical properties of composites containing 1 wt % and 2 wt % CNFs were investigated. Thermogravimetric analysis demonstrated that minimal improvement in thermal stability of the nanocomposites was obtained by the additi...
Article
Full-text available
Novel carbon nanofiber (CNF) -filled bismalemide composites were fabricated by a thermokinetic mixing method. The thermal and mechanical properties of composites containing 1 wt % and 2 wt % CNFs were investigated. Thermogravimetric analysis demonstrated that minimal improvement in thermal stability of the nanocomposites was obtained by the additio...
Article
In the study, high evergy abosorbing shielding system was studied to protect spacecrafts from the hypervelocity impact of space debris and micrometeoroids. CFRP-Kevlar hybrid composites were suggested as a shielding system. It is constituted of two bumper plates and neat Kevlar fabrics inserted between the two bumper plates. The neat Kevlar fabrics...
Conference Paper
In recent times, considerable efforts are given through out the world for the development of composite materials lighter in weight as well as with superior thermo-mechanical properties. These materials can withstand a temperature in excess of +300°C for longer time or much higher temperatures for short time. Due to excellent thermal, physical and m...
Article
In this investigation, attempts are made to prepare high-performance nanoadhesive bonding of titanium for its essential applications to aviation and space. The high-performance nanoadhesive is prepared by dispersing silicate nanoparticles into the ultra-high-temperature-resistant epoxy adhesive at 10 wt% ratio with the matrix adhesive followed by m...
Article
The present investigation highlights fabrication of polybenzimidazole by high-performance nanoadhesive and its performance under space environments. High-performance nanoadhesive is prepared by dispersing silicate nanopowder into ultra-high-temperature-resistant epoxy adhesive. The surface of polybenzimidazole is ultrasonically cleaned by acetone a...
Article
In this study, efforts are made to develop carbon nanofibers (CNFs) reinforced Polybenzimidazol (PBI) nanocomposite to resist high energy radiations in harsh space environment. Thermal analysis shows that PBI has the highest glass transition temperature among high performance polymers and it has substantial thermal stability. Tensile test results s...
Article
Full-text available
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- In As , n- In Sb , n- Hg <sub>1-x</sub> Cd <sub>x</sub> Te ,...
Article
In this investigation, attempts are made to fabricate high performance polymer such as polybenzimidazole (PBI) (service temperature ranges from 260°C to +500°C) by nano silicate epoxy adhesive and to see its performance under space radiation. The polybenzimidazole sheets are fabricated by high performance nano adhesive i.e., by dispersing silicate...
Article
Full-text available
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 environm...
Article
Full-text available
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 II...
Article
Abstract of WO 2008135540 (A1) 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...
Article
It is well known that during long mission at low Earth orbit (LEO) as well as geosynchronous Earth orbit (GEO), electromagnetic radiation such as proton, gamma rays, alpha particles etc. creates severe damages to space electronics equipment as well as structural materials of spacecraft. In this context, present study investigates the rationale to d...
Conference Paper
In this investigation, attempts are made to understand the behaviour of space durable polymer such as polybenzimidazole (PBI) (service temperature ranges from -260°C to +500°C and having excellent properties to resist high energy radiation and fire) when fabricated by high temperature resistant nano adhesive and exposed to intense radiation and har...
Article
In this investigation, attempts are made to modify a high-performance polymer such as polybenzimidazole (PBI) (service temperature ranges from −260°C to +400°C) through high-energy radiation and low-pressure plasma to prepare composite with the same polymer. The PBI composites are prepared using an ultrahigh temperature resistant epoxy adhesive to...
Article
In this investigation, attempts have been made at understanding the effects of high-energy radiation, low and high temperatures on adhesive bonding of titanium (ASTM F 67–95 Grade 2). Two titanium sheets are joined by a ceramic adhesive (Resbond™ 907 GF). The service temperature of this adhesive ranges from –185 to +1290 °C and, in addition, this a...
Article
The present investigation studys the effects of different electrodes such as copper, nickel, and stainless steel under low-pressure plasma on physicochemical and adhesion characteristics of high-density polyethylene (HDPE). To estimate the extent of surface modification, the surface energies of the polymer surfaces exposed to low-pressure plasmas h...
Article
The present investigation aims to optimise the process parameters of DC glow discharge treatment through air in terms of discharge power and time of exposure for attaining best adhesive joint of high-density polyethylene (HDPE) to mild steel. The as- received and DC glow discharge exposed HDPE surfaces have been characterised by energy dispersive s...
Article
The present investigation aims to study the wetting and physicochemical characteristics of Polypropylene (PP) sheet when exposed to a DC glow discharge through air across different electrodes such as copper, nickel and stainless steel at 13 W power level of DC glow discharge under an electrode size of 64 cm2. In order to estimate the extent of surf...
Article
The present investigation aims to optimize the process parameters of Direct Current (DC) and Radio Frequency (RF) glow discharge treatment through air in terms of discharge power and time of exposure for the surface modification of high-density polyethylene (HDPE) sheet, for attaining best adhesive joint of the polymer to mild steel. In order to es...
Article
To improve the strengths of the adhesive joints of high density polyethylene (HDPE) and polypropylene (PP) to steel, the surfaces of HDPE and PP sheets have been treated by DC glow discharge to increase the polar component of surface energy significantly. Present study investigates the effect of mechanical polishing prior to surface modification of...
Article
Abstraet-The surface modification of high density polyethylene (HDPE) and polypropylene (PP) has been carried out by exposure to a DC glow discharge in air at different power levels of 5.28, 11, and 13 W. The surface energies of polymers exposed to glow discharge were estimated by measuring the contact angles of two test liquids: de-ionized water a...

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Projects

Projects (6)
Archived project
Enhancement of adhesion of Aluminium by altering its surface properties and durability of high-performance adhesives such as ultra high -temperature epoxy nano-adhesive and polyimide adhesive under Aerospace environments.
Project
Enhancement of thermo-mechanical properties of adhesive bonding of titanium with the help of reinforcement of nanosilicate powder.