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970 articles for “w/c ratio”
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Circularly Polarized Compact Wide Slot Microstrip-Fed Antenna for Wideband Applications
Abstract: Abstract: This paper presents a circularly polarized (CP) compact wide slot microstrip–fed antenna for wideband applications. Inverted L-shape protruding stub from the ground plane towards the center of slot permits to obtain AR <3dB. Wide slot fed with an offset microstrip feedline at an offset distance d, beneath the protruded stub. Proposed CP wide slot (WS) antenna is designed with compact size of 25 mm x 25 mm. Simulated results …
Published in Journal of Microwave Engineering and Technologies · Vol. 6, Issue 1, 2019 · pp. 6–12 Read article
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A REVIEW ON RECENT TRENDS AND CHALLENGES IN MICROMACHINING AND MACHINABILITY OF Ti-6Al-4V
Abstract: Based on several literature examinations from past decades, it is clearly observed that limited research has been done till date concerning to micromachining and had a partial understanding of it with focus on miniaturized parts. This review article presents a complete comprehensive on machining process at micro level with attention in drilling for work horse of titanium alloys. The Ti and its alloys are the most attractive materials due to …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 3, 2018 Read article
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A Review on Recent Trends and Challenges in Micromachining and Machinability of Ti-6Al-4V
Abstract: Based on several literature examinations from past decades, it is clearly observed that limited research has been done till date concerning to micromachining and had a partial understanding of it with focus on miniaturized parts. This article presents a complete comprehensive review on machining process at micro level with attention in drilling for work horse of titanium alloys. The Ti and its alloys are the most attractive materials due to …
Published in Trends in Mechanical Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 7–31 Read article
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Investigation of Mechanical Behaviour in Brake Shoe Liner by Using Composite and Nano Materials
Abstract: The mechanical performance of the brake shoe liners dictates the safety and efficiency of the vehicles; thus, brakes are very vital in ensuring controlled deceleration and stopping. In the past few decades, composites have significantly impacted the automotive industry through lighter, stronger, and sturdier alternatives to traditional materials improving overall performance. Nano additives are of key importance in such composites, improving not only the mechanical properties but, more significantly, the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 280–295 Read article
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Design & Development of Helical Compression Spring Using Composite Material
Abstract: The paper embodies the manufacturing of a helical compression spring using composite material. The main motive for the use of composite material spring is its low density and greater stiffness to that of a steel spring. The composite material spring has greater stiffness to weight ratio as compared to the steel spring. We have manufactured carbon fibre and glass fibre spring using filament winding technique as less as possible economical …
Published in Trends in Mechanical Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 16–23 Read article
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The Mechanical Properties of Manganese Chloride Salt Reinforced [PVA: PVP] Blend Films
Abstract: In this study, pure [PVA: PVP] polymer blend film and MnCl2·4H2O salt reinforced polymer blend films at different weight ratios (10–50) wt%) were prepared by using the casting method. The effect of salt weight ratio on the mechanical properties of the [PVA: PVP] polymer blend films reinforced by MnCl2·4H2O salt was also studied. The experimental results obtained from the tensile test of the [PVA: PVP] polymer blend films reinforced by …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 16–23 Read article
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The Study of Gravimetric Thermal Analysis and Some Physical Properties of a Binary Polymeric Mixture of Unsaturated Ester and Peach Seed Powder
Abstract: Strengthening polyester resin and increasing its hardening was studied by adding peach seed powder. We also studied how to change the thermal properties after strengthening the resin by adding different weight percentages of peach seed powder (5%, 10%, 15%). The thermal properties of polyesters were studied before and after cementing, which included thermogravimetric analysis (TGA) and treatment at different temperatures (21, 51, 81, 121, 151ºC.) The effect of acidic functions …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 33–46 Read article
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Estimation of Life Cycle Cost of RC Infrastructure Using Different Analysis Methods
Abstract: Accuracy of service life prediction largely influence life cycle cost of infrastructure. Recent research come up with the conclusion that ingression of chloride to cover concrete is dependent on the water penetration front which dramatically change the service life. Therefore, in this study chloride ion profiles and behavior of penetrating water for slag concrete with w/c ratio as 40%, 55% and 70%, respectively, cast in laboratory, were examined. Furthermore, life …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 15–21 Read article
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Investigation into the Use of Anaerobic Co-digestion of Cow Dung for Biogas Production
Abstract: The research is targeted on investigating the use anaerobic co-digestion of cow dung for biogas production, and to influence a decrease in the concentration of sulphide using direct inclusion of facultative lagoon sediment with sodium and calcium alginate. It was noted that 1 minute concentration of calcium alginate and sodium was introduced right from the beginning of the anaerobic digestion cycle shows the tendency to increase methane concentration and reduce …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 1, 2022 · pp. 23–28 Read article
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Producer Gas Generation by Utilizing Paddy Straw as a Biomass Feedstock in an Open Core Downdraft Gasifier
Abstract: In present day scenario, the burning of paddy straw seriously affects the environment in India. This paper research work is utilized to solve the above-mentioned problem. In this research work, a downdraft gasifier is used for the gasification process of paddy straw for generating Producer gas (PG). The process is carried out with air as gasifying agent. The gas composition, calorific value, temperature, and efficiency are taken as performance characteristics …
Published in Journal of Polymer & Composites · Vol. 12, Issue 3, 2024 · pp. 301–310 Read article
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Optimizing Vehicle Structures Using Functionally Graded Materials of Aluminum and Carbon Fiber Reinforced Polymer Composites
Abstract: This article investigates the optimization of vehicle structures through application of functionally graded materials (FGMs), specifically aluminium and carbon fibre reinforced polymer (CFRP) composites. Such materials, known as FGMs, are characterized by spatial variations in composition and structure designed to improve so-called performance attributes. For the purposes of this research, the material properties of aluminium and CFRP composites are taken to be randomly distributed in thickness direction of a FGM …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 478–489 Read article
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Anodic Polarization Study on Steel Bar in Concrete Powder Solution Extracts Contaminated with Chloride and Sulfate Salts
Abstract: In present work, anodic polarization tests are conducted on different steel specimens to find out corrosion zone potentials of various corrosion zones. The tests are done in the concrete powder solution extracts contaminated with the varying levels of admixed chloride and sulfate salts, at varying w/c ratios and cement types. The admixed chloride content is fixed at 3.5% and the sulfate content is used as 0, 2.5 and 5%, by …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 22–28 Read article
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Experimental Investigation of a 4-Stroke Diesel Engine for Varying Fuel Injection Pressure and Compression Ratio
Abstract: Diesel engines are widely used in transportation, agriculture, power sector and various other types of industries due to its high fuel efficiency. An improvement in the performance of the same makes remarkable difference in nation economy. This paper presents an experimental investigation of a 4-stroke engine, using diesel as a fuel. The engine is modified to study the effect of various parameters on the performance of engine. The parameters varied …
Published in Journal of Automobile Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 11–20 Read article
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Experimental Evaluation of Carbon Fiber Reinforced Epoxy Composites for Structural Applications
Abstract: Composites made of carbon fibre reinforced polymer (CFRP) are currently one of the most widely used material classes in advanced engineering applications because of their remarkable environmental resistance, dimensional stability, and strength-to-weight ratio. The vacuum bag moulding method was used in this study to create CFRP laminates with different fiber-to-resin weight ratios: 50:50, 55:45, 60:40, 65:35, and 70:30. The reinforcement phase was made of unidirectional carbon fibre fabric and the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 401–415 Read article
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CFD Analysis of Savonius VAWT for Household Application
Abstract: Fossil fuels are depleting at very fast rate and will have shortages in near future. Also, prices of fuelsincrease day-by-day, demands of renewable energy sources increases for electrical power generation.Wind energy is available in nature free of cost and in abundant form, so is an excellent option forgeneration of electric power through wind turbine technology. Rapid increase in global energyrequirement resulted in considerable attention towards renewable energy sources as there …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 1, 2021 · pp. 18–32 Read article
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Innovative Biogas Strategies: Anaerobic Co-Digestion of Livestock Waste
Abstract: The goal of the study is to determine whether anaerobic co-digestion of cow dung can be used to produce biogas and whether adding sodium and calcium alginate directly to natural lagoon sediment can reduce sulphide concentrations. It was observed that one minute of focus Sodium and calcium alginate were added at the start of the anaerobic digestion cycle, which indicates a propensity to lower the system's hydrogen sulfide concentration and …
Published in Emerging Trends in Chemical Engineering · Vol. 12, Issue 1, 2025 · pp. 40–45 Read article
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Effect of Hybridization on Tensile and Flexural Strengths of Carbon, Glass and Steel Fiber Composites: A Comparative Study
Abstract: Fiber reinforced polymer composites are widely recognized for their high strength-to-weight ratio, excellent corrosion resistance, and design flexibility making them ideal for various engineering applications. Despite their numerous advantages, traditional composites possess significant limitations such as restricted mechanical performance under diverse loading conditions. To address this, hybrid fiber polymer composites are developed while enhancing material performance. In the present study, synthetic (carbon, glass) and metallic (steel) fiber reinforced composite materials …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 621–635 Read article
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Investigation, Fabrication and Testing of Spur Gear Using Composite Material
Abstract: Composite materials constitute one of the favorable, efficacious material zones for tomorrow’s sustainable future through identification of materials with higher strength to weight ratio. A composite material is combination of two or more different materials with varied qualities that work together to create a material that is better than the sum of its parts. Therefore, finding some alternative material for various mechanical applications to accelerate the Indian composite industry is …
Published in Journal of Experimental & Applied Mechanics · Vol. 16, Issue 2, 2025 · pp. 1–8 Read article
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Wind’s Influence on Tall Buildings with Different Aspect Ratios
Abstract: Skyscrapers and other large buildings are being constructed worldwide these days. Because wind is so dynamic, it plays a major part in the design of these towering structures. The placement and height of such structures have a major impact on how wind affects them. The comparable static approach is used in this work to evaluate wind loads on structures with variable aspect ratios attained by altering the number of bays. …
Published in Journal of Offshore Structure and Technology · Vol. 11, Issue 2, 2024 · pp. 34–43 Read article
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Comparative Study of Performance and Emission of Gasoline and Gasoline-Ethanol Blends
Abstract: AbstractThis study is about analysing performance of gasoline and gasoline-ethanol blends in multi-fuel engine. Performance, combustion and emission characteristics of gasoline fuel and gasoline ethanol blended fuels have been analysed in detail under various load conditions, various ignition angle, different compression ratios and at different rpm. The study showed improvement in thermal efficiency at higher compression ratios compared to lower compression ratios as well as with ethanol blended fuel. There …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 3, 2018 · pp. 1–8 Read article