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1970 articles for “3” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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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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Modification of Acrylonitrile-Methylacrylate Copolymer by Gamma Irradiation
Abstract: AbstractRadiative degradation of acrylonitrile-methylacrylate (AM) copolymer has been investigated by electron spin resonance (ESR) and infrared (IR) spectroscopy. The ESR spectrum observed for AM copolymer irradiated to a dose of 12 Mrad is a triplet with an intensity ratio of 1:3:1. The ESR spectrum is simulated by total-curve-fitting method and component spectra are generated. Magnetic parameters of component spectra are evaluated. Component triplet spectrum with magnetic parameters ni=3, mi=1 is …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 16–19 Read article
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Studies on Mechanical, Thermal, Physical Properties and Characterisation of PLA-EVA Blend with Microclay and Product Development
Abstract: PLA-EVA (70:30 wt. %) with microclay (1, 3, 5 wt. %) was also melt blended using Glycerol (1%) was used as compatibilizer in a twin screw compounding extruder. Then test specimens were prepared by an injection molding machine. Mechanical, thermal and physical properties were evaluated. As microclay content was increased, the tensile strength, elongation at break and tensile modulus were slightly decreased but higher than that of PLA-EVA (30 wt. …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 24–33 Read article
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Influence of Bi2O3 on Physical, Optical and gamma radiation Properties of BaO-Bi2O3-B2O3-CuO and BaO-Bi2O3-B2O3-Fe2O3 glasses
Abstract: In this present work glasses with chemical composition 30BaO-XBi2O3-(69-X)B2O3-1CuO and 30BaO-XBi2O3-(69-X)B2O3-1Fe2O3 (X = 0, 5, 10, 15, 20 and 25 mole%) have been prepared and labeled as BBBC and BBBF series, respectively. Traditional quenching method was employed for making these samples. XRD diffractograms confirmed that the materials were amorphous. Physical, optical and structural properties were studied with the influence of Bi2O3 concentration. The density of both BBBC and BBBF series …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 20–31 Read article
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Effect of Length and Tenor of the Introduction of Sansevieria cylindrica Fibers on the Mechanical Performance of Natural Fiber Composites
Abstract: The substitution of synthetic fillers, such as carbon black, with biobased ones in natural rubber (NR) is a trend of interest in view of increased sustainability and exploitation of agroforest waste in the materials sector. In this work, NR was filled with short fibers extracted from Sansevieria cylindrica (SC) leaves of various length (10, 20, 30, or 40 mm) and in different amounts (3, 6, or 10 g per 100 …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 94–101 Read article
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Microstructural, Mechanical and Strengthening Mechanisms of Al7075 Metal Matrix Composite with Al2O3 Nano Particle Processed Through Ultrasonic Cavitation Assisted Stir-casting
Abstract: In this investigation, we produced Al7075 matrix composites using a stir casting method enhanced by ultra-sonic cavitation, reinforcing them with nano-Al2O3 particles. The SEM microstructural analysis confirmed the presence of nano-Al2O3 particles in all the composites, showcasing their consistent particle size and reasonably even distribution within the matrix. Optical microscopic examinations revealed that the presence of nano-Al2O3 particles, along with the aggressive ultrasonic cavitation effect, resulted in grain refinement in …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 31–43 Read article
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Investigation into mechanical Characterstics of laminated composite materials (PMMA and NYLON) using FDM
Abstract: The widespread embrace of 3D printing technology stems from its capacity to minimize material waste, offer versatile design options, and enable the production of intricate structures. 3D printed polymer composites reinforced with fibers (carbon, glass, nylon etc.) have been extensively used in automobile, marine, aerospace and energetic applications due to their excellent properties. Nylon fiber is light weight, resistance to damage from oil and chemicals, tough, strong and has higher …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 108–121 Read article
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Different Compressor Adders
Abstract: AbstractMultipliers are one of the main blocks which decide the circuit performance as well as computation speed. In multiplication, addition of partial products contributes most to the circuit delay, power, and area. In this project, compressor adders are used to reduce this delay. Hence, compressors are a major part of the multiplier circuit that decides the overall speed of the system. For high-speed processing and higher systems, a huge number …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 2, 2018 · pp. 19–26 Read article
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Building Behaviour on Sloping Ground With & Without Diaphragm: Earthquake Zone-IV
Abstract: The period 1996 to 2015, 7,056 disasters recorded worldwide. 1.35 million People killed by natural hazards over the past 20 years, more than half died in earthquakes. The poorest nations paid the highest price in terms of the numbers killed per disaster and per 1,300,000 populations. Earthquake load is major effect on buildings especially on sloping grounds. Earthquake zone-IV is twice times more dangerous compare with zone-III. In the present …
Published in Journal of Structural Engineering and Management · Vol. 7, Issue 2, 2020 · pp. 47–55 Read article
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Waste Plants as a Green inhibitor for Reinforced Concrete
Abstract: AbstractIn recent years, the use of inhibitors in producing high performance concrete has increased significantly as a result of chloride and sulfate attacks. The present inhibitors in market are toxic to the environment. Hence, the objective of the present investigation was to study a novel, eco-friendly and a hydrophobic green plant extracts’ inhibitor (rice husks) and study the effects of it on compression strength of reinforced concrete. The inhibitor above …
Published in Recent Trends in Civil Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 53–58 Read article
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Pond Ash: A Sustainable Building Material for Smart Cities
Abstract: Energy is the backbone of modern civilization of our country and thermal power plant is a major source of energy, in the form of electricity. Fly ash and pond ash are two by products of thermal power plant being produced at an alarming rate. Efforts are required to safely dispose it and if possible find better ways of utilizing it. Fly ash possesses pozzolanic character and it is being utilized …
Published in Recent Trends in Civil Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 53–59 Read article
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Effect of Size of Crushed Ceramic Tiles as Fine Aggregates in Cement Composites
Abstract: Recent studies have shown marked upsurge of waste production where ceramic contributes to 30% waste production in ceramic industry. Research on ceramic waste as partial substitute for fine aggregate has not been fully exploited. A focused investigation is made to check whether the ceramic waste having particle size same and lesser than fine aggregates as partial substitute in cement mortar and concrete. Ceramic waste collected is crushed into required sizes …
Published in Recent Trends in Civil Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 46–53 Read article
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A Study on Strength and Durability of Fly Ash–Metakaolin Blended Geopolymer Concrete
Abstract: Production of cement causes 8% of the total carbon dioxide emissions in the world. Finding a right alternative to cement is the need of the hour, to eliminate environmental pollution caused by cement production. A substitute for conventional concrete can be industrial waste products like GGBS, Flyash, Metakaolin, and so on, these mineral admixtures can be used to fully replace cement with some activators this mix of mineral admixtures and …
Published in Recent Trends in Civil Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 51–59 Read article
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The Role of the Mechanical Engineers in Fighting Against COVID-19
Abstract: Coronavirus disease 2019 (COVID-19) is a contagious disease caused by severe acute respiratorysyndrome coronavirus 2 (SARS-CoV-2). The first known case was identified in Wuhan, China, inDecember 2019. The disease has since spread worldwide, leading to an ongoing pandemic. Symptomsof COVID-19 are variable, but often include fever, cough, headache, fatigue, breathing difficulties,and loss of smell and taste. COVID-19 pandemic dramatically changed the world, obligating allscientific disciplines to be adapted to the …
Published in Trends in Mechanical Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 1–9 Read article
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Simulated Design and Characterization of an Efficient Nd:YAG based Solar Pumped Single Mode Laser
Abstract: AbstractAs the current solar pumped lasers have shown to yield a very low efficiency, this research explores the possibility of a simulated design which can be more efficient in converting solar energy into optical power. This paper presents the software design of a Neodymium Doped Yttrium Aluminum Garnet (Nd3+:Y3 Al5 O12) Laser using LASCAD and also presents the characterization of the design using a theoretical mathematical model. Overall, results of …
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 3, 2015 · pp. 39–49 Read article
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Empowering Accessibility: A Review of Text-to-Speech Systems for the Visually Impaired with Raspberry Pi
Abstract: The automatic text reader for people who are blind is presented in the paper. built on a Raspberry Pi. It makes use of computer programming and image sensing tools to identify printed characters employing optical character recognition technology. It creates machine-encoded text from an image using text that has been printed, typed, or written by hand. In the present work, text-to-speech synthesis and OCR are used to convert the image …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 1, 2023 · pp. 16–21 Read article
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Influence of Polymer Additives on Physical Properties of Asphalt Concrete under Marshal, Flexure and Compressive Stresses
Abstract: AbstractThe polymer modified asphalt cement is used today to reduce early pavement distress and extend service life by enhancing adhesion, cohesion, and elasticity. This work studies the impact of polymer additives (SBS, LDPE, and rubber) to asphalt cement on the physical properties of asphalt concrete subjected to compression and flexure stresses, and Marshal volumetric properties. Asphalt concrete cylindrical specimens of 101.6 mm diameter and 127 mm height for compressive strength …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 8–17 Read article
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Effect of the Position of Geotextile on the Performance Parameters of the Flexible Pavement
Abstract: The major deterioration of the flexible pavement is due to the combined effect of fatigue cracking caused by excessive horizontal strain at the bottom of the bituminous layer and rutting deformation caused by excessive vertical strain at the top of subgrade layer. For designing the flexible pavement, it is necessary to determine the minimum thickness of the road crust, required to withstand the expected fatigue life and rutting life. The …
Published in Trends in Transport Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 65–75 Read article
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Detecting the Additives Impact on The Durability of Asphalt Concrete
Abstract: Modification of asphalt cement with additives is considered as a sustainable issue to enhance the asphalt concrete quality and durability among the expected service life. An attempt has been made in the present investigation to detect the influence of modification of the asphalt binder by 2 % silica fumes and 4 % fly ash additives on the durability of asphalt concrete in terms of fatigue life under long-term ageing and …
Published in Trends in Transport Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 21–29 Read article
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Amelioration of Parameters of Antenna using Metamaterial with Negative µ and ε for WLAN
Abstract: AbstractIn this paper, a Rectangular Microstrip Patch Antenna with “Multi Discoidal Rings” shaped metamaterial cover is designed and replicate at a height of 3.276mm from the ground plane. The antenna along with the proposed metamaterial cover is designed to resonate at 3.36 GHz frequency (in S-Band). Proposed metamaterial cover significantly reduces the return loss and increases the bandwidth and efficiency of the antenna in comparison to rectangular microstrip patch antenna …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 1, 2013 · pp. 4–10 Read article