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756 articles for “Matrix”
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A Novel Technique for Improved Recovery of Mg-Analysis of the Microstructure and Physical Properties
Abstract: Aluminium-Magnesium alloys are used widely in industrial applications as well as for the preparation of metal matrix composite because of their low density and high specific strength. Magnesium has a low boiling point and the recovery of magnesium is poor when it is added in pure form particularly as cheaply available turnings to the liquid metal. Magnesium is added to aluminium for increasing its wettability and thus helping in uniformly …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 1, 2013 · pp. 1–7 Read article
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Multi Objective Optimization of Weld Bead Geometry Parameters of Pulsed Current Micro Plasma Arc Welded Inconel 625 Using Enhanced Non-dominated Sorting Genetic Algorithm
Abstract: Pulsed Current Plasma Arc Welding (PCPAW) is one of the most widely used welding processes in sheet metal manufacturing industry. In any fusion arc welding process, the weld bead geometry plays an important role in determining the mechanical properties of the weld and hence, quality of the weld. Moreover, the geometry of weld bead involves several simultaneously multiple quality characteristics such as front width, back width, front height and back …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 1, 2013 · pp. 17–24 Read article
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Effect of Chemical Treatment of Coir Dust on the Dielectric Behavior of Bio-waste Reinforced Polymer Composites
Abstract: The present work is focused on analyzing the effect of the chemical treatment of coir dust fibers on the dielectric properties of epoxy polymer matrix composites. Coir dust is a spongy, peat-like residue obtained from the processing of coconut husk for coir fiber .The coir dust was washed and sun dried. The dried coir dust was treated with chemicals such as HCl, CH3COOH, KOH and NaOH. An untreated and treated …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 84–96 Read article
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Optimizating Pitting Corrosion in 3.5 N NaCl Medium of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Using Genetic Algorithm
Abstract: Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current micro plasma arc welding (PCMPAW) was found beneficial due to its advantages over the conventional continuous current process. This paper highlights …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 132–142 Read article
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Al-MMC Foam: Synthesis and Characterisation
Abstract: Aluminium alloy composite foams are produced in the laboratory using TiH2-CaCO3 dual foaming agents. The density of the developed material varied along various cross sections. There exists a more pronounced variation in density along the direction of foaming. Compressive and tensile tests are performed on Aluminium Metal Matrix composite (Al-MMC) specimens of different relative density. The compressive stress-strain response of the material establishes their engineering utility in terms of their …
Published in Journal of Materials & Metallurgical Engineering · Vol. 1, Issue 1-3, 2011 · pp. 18–27 Read article
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Establishing Empirical Relationships to Predict Grain Size and Hardness of Pulsed Current Microplasma Arc Welded Inconel 625 Sheets
Abstract: Nickel alloys have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current microplasma arc welding was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on developing mathematical models …
Published in Journal of Materials & Metallurgical Engineering · Vol. 1, Issue 1-3, 2011 · pp. 37–47 Read article
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Investigation on pitting corrosion rate of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) alloy sheets in KBr solution using TOPSIS
Abstract: Titanium is having good anti-corrosion properties in both basic and acidic medium. However, when it is subjected to severer heating processing like welding, there is a possibility of corrosion formation at the weld joint. In the present work Pulsed current MPAW is used for joining 0.5 mm thick Titanium (Ti-6Al-4V) alloy sheets. Peak Current, Base Current, Pulse Rate and Pulse Width are considered as input parameters and fusion zone corrosion …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 2, 2019 · pp. 37–53 Read article
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Advance green fiber reinforced thermosetting composites for reliable assistive device fabrication
Abstract: The biodegradable green fibers derived from natural plants are abundantly available and are currently considered as potential reinforcements. Present study aims at investigating the mechanical properties of green jute fiber reinforced thermoset composites as possible alternatives to the inorganic glass fiber reinforced prosthetic assistive device. Continuous green jute fiber are treated with sodium hydroxide and acetic acid, and then added to epoxy and polyester at varying fiber loadings to produce …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 1–8 Read article
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Preparation and Characterization of a Novel Lignocellulosic Fiber from Calotropis gigantea Stem Fiber for Thermoplastic Composites
Abstract: In the current article, Calotropis gigantea fiber mat (CGM)/thermoplastic polypropylene (PP) strengthened non-woven unidirectional composites were successfully manufactured by hot compression molding using the film piling method. Micromechanical and physicomechanical properties such as tensile, flexural, compressive, impact properties, thickness, swelling, and water absorption of CGM/PP composites were evaluated for the effects of CGF composition, mercerization of CGF as well as the inclusion of two types of coupling agents (vinyltriethoxysilane and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 1, 2022 · pp. 15–33 Read article
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Multi-objective Reactive Power Planning based on MNSGA II
Abstract: Abstract This paper presents an application of modified NSGA-II (MNSGA-II) to reactive power planning (RPP) problem by minimizing the total cost (which consist of sum of annual energy cost and the installation cost of additional reactive power sources) and the load bus voltage deviations. Voltage stability index is considered as an additional constraint in order to include the system stability into account. Reference Pareto-front is generated using covariance matrix adopted. …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 37–45 Read article
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Characterisation of Plasma Sprayed CNT-Alumina Composite Coatings on Boiler Tube Steel
Abstract: In this research work, the 1.5, 2 and 4 wt.% CNTs-Al2O3 coatings were prepared and successfully deposited on T22 boiler tube steel using plasma spray process. Ni-Cr was also used as bond coat before applying CNTs-Al2O3 coatings. The coatings were subjected to metallography, XRD and SEM/EDAX analysis. The porosity of CNTs-Al2O3 mixed coatings on T22 boiler steel was found to be decreasing with increase in CNTs content. The CNTs were …
Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 1–15 Read article
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Preparation and Charactrization of lead free piezoelectric ceramic/PVA polymer composites
Abstract: Sodium potassium niobate (Na0.5K0.5 NbO3 ) ceramic was prepared through conventional solid state reaction using AR grade NaNO3, KNO3 and Nb2O5 in stochiometric ratio. Poly vinyl alcohol (PVA) polymer - sodium potassium niobate composite films were prepared by solution casting method by changing the blend ratio of PVA / Na0.5K0.5NbO3. The prepared samples in the form of films were characterized by powder X-ray diffraction. The XRD studies revealed the presence …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 1–8 Read article
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ISOLATION OF CELLULOSIC NANOPARTICLES FROM COIR FIBRE FOR THE PREPARATION OF NATURAL RUBBER COMPOSITES
Abstract: Coir fibre and natural rubber are renewable and sustainable agro-resources that can be harnessed for the production of finished rubber articles on industrial scale. In this research, coir fibres extracted from coconut husk were subjected to alkaline-peroxide delignification. The delignified fibres were further transformed into coir fibre cellulosic nanoparticles (CFNP) with particle size distribution of 68–311 nm and a polydispersity index (PDI) of 0.371 through friction homogenization. These particles were …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 9–16 Read article
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Chemical Synthesis, Spectral Characterization and Electrical Conductivity Behavior of Poly(2-Methoxyaniline-Co-2-Chloroaniline) and its CuO Nanocomposite and Polypropylene Glycol Blend
Abstract: AbstractCopolymerization of 2-chloro aniline and 2-methoxy aniline was achieved chemically by oxidative polymerization technique using ammonium persulphate as the oxidizing agent in acidic medium in the presence of sodium lauryl sulphate, an anionic surfactant. Copolymerization was also carried out in the absence of the surfactant to study the effect of surfactant on the thermal stability and electrical conductivity. The copolymer composite with CuO nano particles and blend with poly propylene …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 1–13 Read article
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A Review on Sisal Fiber Reinforced Composite Materials and Effects of Various Factors on its Mechanical Properties
Abstract: AbstractIn the modern world of science and technology, there is current rising trend towards the augmentation of mechanical properties of composites by introducing different materials in many flexible ways to overcome the newly resurgent demands, especially in engineering practices. Many natural fibers like jute, sisal, bamboo, bagasse, hemp and banana find their application as a reinforcing component in composite materials due to their light weight, low cost, low density, biodegradability, …
Published in Journal of Polymer & Composites · Vol. 5, Issue 1, 2017 · pp. 25–28 Read article
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Tensile and Impact Properties of Jute/Glass and Jute/Carbon Fiber Reinforced Polypropylene
Abstract: AbstractComposites have created a niche in the world market today as they provide a stiff, strong and lightweight material. Two types of composites polypropylene/jute/glass fiber and polypropylene/jute/carbon fibers were prepared by varying the percentages of jute, glass and carbon fibers, respectively. A proportion of 35:5, 30:10, 25:15 and 20:20 were maintained between jute and other reinforcing fiber (glass or carbon) in polypropylene matrix. Tensile and impact test specimens were prepared …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 35–39 Read article
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Optical and Microstructural Changes in 5(6)-Carboxyfluorescein Doped PVA
Abstract: AbstractThe effect of 5(6) Carboxyfluorescein dye on microstructural and optical properties of a Poly(vinyl alcohol) (PVA) have been studied by using FTIR and UV-Visible absorption techniques. FTIR spectral result shows the possible interaction between the dye and PVA. The UV-Visible spectra shows three absorption bands (around 227nm, 310nm and 450nm) and from the observed optical band edges in the UV-Visible spectra, three optical band gaps and three activation energies for …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 45–51 Read article
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A Review on Hole Making in Carbon Fiber Reinforced Plastic Laminates
Abstract: AbstractThe existence of fiber reinforced plastic (FRP) laminates in the world since 1940s, and its application is till date growing continuously. The research papers published in this field focused on the manufacturing of laminates to its final uses. The FRPs can be manufactured by various processes, but its assembly of laminated product required a hole. Hole in laminate may be produced by means of conventional or unconventional machining. Major attention …
Published in Journal of Polymer & Composites · Vol. 4, Issue 2, 2016 · pp. 44–51 Read article
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Effect of Electrochemically Synthesized Zno/CoO Nanocomposites on Optical, Electrical and Viscosity Properties of Polyvinyl Alcohol Films
Abstract: AbstractZnO/CoO nanocomposites doped poly vinyl alcohol films were prepared by casting method using water as a solvent. X-ray diffraction, IR spectroscopy UV-visible spectroscopy, and scanning electron microscopy techniques were used to characterize the synthesized nanocomposite films. Study of the structural changes and complexation of nanoparticles with polymer matrix were performed using X-ray and IR techniques. Optical characterization studies revealed a blue shift in the absorption edge with increasing nanoparticle concentration …
Published in Journal of Polymer & Composites · Vol. 4, Issue 2, 2016 · pp. 52–62 Read article
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Investigation of Jute Mat with Waste Fish Net by Varying Matrices in Hybrid Composites
Abstract: AbstractIn this study the low cost material of multi filament waste fish net and jute fibres were incorporated as the main reinforcing materials with epoxy resin and polyester resin as the matrix in order to increase the strength of the hybrid composites. The samples were fabricated using hand layup technique. The nylon fibre of waste fish net possesses high impact strength, elasticity property and highly resistant to abrasion of chemicals …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 27–34 Read article