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16 articles for “gas porosity”
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Improvement in Furan No-bake Molding System to Reduce Defects
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Casting foundry markets will continue to face challenge from global producers because of their lower wage scales and ecological standards, which lower the cost of their casting jobs. Production constraints on the foundry industry’s processes are increasingly more costly to the industry and cut into the profit. Casting foundries have also made changes to their processes to help decrease pollution. One of …
Published in Journal of Production Research & Management · Vol. 5, Issue 3, 2015 · pp. 1–7 Read article
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Improving the Performance of Foundry Industry through FNB Sand Mould System
Abstract: There are many new advanced technologies for casting of metal, furan no bake (FNB) sand casting remains one of the fastest spreading and used casting processes today due to the lower cost of raw materials, a wide variety of castings with respect to composition and size, and the possibility of reclaiming the moulding sand. The FNB sand casting process is one of the most versatile processes in manufacturing as it …
Published in Journal of Production Research & Management · Vol. 6, Issue 3, 2016 · pp. 26–30 Read article
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An Application of PARETO Chart for Investigation of Defects in FNB Casting Process
Abstract: Casting is one of the widely used manufacturing processes consisting of melting and pouring the metal into the mould to get the desired shape. Furan no-bake system is a binder system consisting of furan resin and acid catalyst. It is a fast growing system due to its excellent surface finish and dimensional accuracy. Although having high dimensional accuracy, many defects arise in FNB casting such as sand inclusion, gas porosity, …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 1, 2018 · pp. 33–39 Read article
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Application of flux cored arc welding (fcaw) without pre-heating for heavy structures in ship building fabrication & construction of heavy offshore structural steels
Abstract: In fusion welding processes, the reason often given to explain the need for preheating, controlling the inter pass temperature (in multi-pass welds), and post-weld heat treatment (PWHT) is to reduce the risk of residual stresses and it can be removed by heating weldment in the heat affected zone (HAZ). Cold cracking is a hydrogen embrittlement phenomenon, often referred to as hydrogen induced cracking or HAZ cracking. During the construction and …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 1, 2020 · pp. 20–28 Read article
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Injection Parameters Setting in High-Pressure Die Casting
Abstract: The advancement of science and processing technology is highly essential for the development of human civilization for a better life. Mass production leads to the availability of goods at a lesser price. Aluminium die-cast components are widely used in the automobile, aerospace, and consumer goods market. Proper process parameters are required to produce components with minimum rejections and scrap. This paper studies optimum injection parameters to produce components without defects. …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 135–142 Read article
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Synthesis and Characterization of Sustainable, Low-Cost, Biomass-Derived Carbon Films from Hevea Brasiliensis (Rubber) Wood for Environmentally Friendly Gas Sensors with Enhanced Selectivity and Sensitivity to Polar Vapors and Hazardous Gases
Abstract: Hevea brasiliensis (rubber) wood sawdust was utilized to fabricate carbon gas sensors for detecting 1000 ppm of ethanol, methanol, acetone, carbon dioxide, and ammonia gases. The carbon particles were prepared by phosphoric acid impregnation followed by thermal activation and then fabricated into films on conductive and non-conductive substrates using the doctor blade method. X-ray diffraction (XRD) analysis revealed distinct graphitic features with peaks at the (002) and (100) planes, indicating …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 12, Issue 1, 2025 · pp. 22–36 Read article
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Enhanced Room-Temperature Gas Sensing Performance of 2% Mn-Doped Sri Lankan Natural Graphite Thin-Film Sensors for Ammonia, Acetone, and Ethanol vapors Detection
Abstract: The development of room-temperature gas sensors with high sensitivity, fast response, and low-cost remains a critical challenge for environmental monitoring and safety applications. In this work, we report the fabrication and characterization of a 2% Mn-doped Sri Lankan natural graphite thin-film sensor for the detection of ammonia (NH3), ethanol (C2H5OH), and acetone (C3H6O) vapors under ambient conditions. The sensor was prepared using the doctor-blade coating method on Indium Tin Oxide …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 13, Issue 2, 2026 · pp. 39–49 Read article
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Evaluation on the Mechanical Strength of TIG Welded 6061Aluminium Alloy Joints
Abstract: Aluminum alloy Al-6061 is extensively used in aerospace, automotive, and marine industries due to its excellent mechanical properties, lightweight nature, and corrosion resistance. However, welding this alloy presents challenges such as porosity, hot cracking, and strength reduction in the heat-affected zone (HAZ). Tungsten Inert Gas (TIG) welding, known for its precision and quality, is commonly employed for joining Al-6061. This study investigates the tensile strength of TIG-welded butt joints of …
Published in Trends in Machine design · Vol. 13, Issue 1, 2026 · pp. 34–39 Read article
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Effect of Hot Corrosion on SA-213 and SA-516 Boiler Steels in Na2SO4-50%NaCl Molten Salts Environment at 800°C
Abstract: The aggressive environment corrosion at increasing temperature is the major problem in the components of boiler and gas turbine, etc. This degradation occurs by application of large variety of fuels like coal and oil, etc., at higher temperature. Boiler steel materials were found to be good corrosion resistance, but they lacked to corrosion at higher temperature in aggressive environment. The detonation gun Cr3C2-25NiCr sprayed coating provides an appropriate solution to …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 1–6 Read article
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Physical Activation Process and Characterization of Bioactive Carbon, with a Focus on its Applications
Abstract: Activated carbon is a form of carbon that has been processed to enhance its surface area and porosity. This processing enables it to function as an efficient adsorbent, attracting and retaining other molecules on its surface. In our environment, many types of biomass waste are inexpensive and renewable. Recently, there has been a growing interest in producing products from renewable resources. A prime example is the use of biomass to …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 507–517 Read article
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Carboxymethyl Cellulose-Based Spray-Dried Microspheres: Recent Advances and Applications in Targeted Drug Delivery Systems
Abstract: Microspheres are spherical particles ranging from 1 to 1000 μm, made from natural or synthetic polymers and inorganic materials. Their structure allows precise drug delivery, improving targeted release and minimizing off-target effects. Natural polymers such as starch, chitosan, and alginate are favored for their biodegradability, adhesion, and compatibility, enhancing mucosal interaction and residence time. Microspheres are widely used in site-specific drug delivery, gene therapy, and vaccine administration, improving immunogenicity, extending …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 251–268 Read article
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REVIEW ON BIODEGRADABLE CONCRETE
Abstract: Concrete is one of the strongest construction materials used all over the world and usually considered as indestructible because of their longer service life as compared with the most constructional products. However, they can get destroyed for a variety of reasons including the material limitations, poor quality design and construction practices, as well as the hard exposure conditions. Degradation mechanisms of concrete often depend on the way potentially aggressive substances …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 3, 2018 · pp. 34–40 Read article
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Treatment of Wastewater with Acid and Alkaline Modified Coconut Fiber Carbon
Abstract: The thrust of this study is to investigate the effect of acid and alkaline modified coconut fibre carbon for Liquified Natural Gas (LNG) waste water treatment. The Coconut fibre were obtained as an agrowaste material from Ahiankwo Market in Umuoyoro, Omuma L.G.A, Rivers State, Nigeria while the LNG waste water was sourced from Greenvile LNG plant in Rumuji, Emohua L.G.A, Rivers state, Nigeria. The coconut fiber was carbonized, chemically activated …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 13, Issue 3, 2022 · pp. 10–25 Read article
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Influence of process parameter on Lack of Fusion in T.I.G. welding of S.S. 304 – A Review
Abstract: The T.I.G. welding or gas tungsten arc welding (GTAW) process is widely used in many appliances because of its versatility in industry. For GTAW process, metals like carbon steel, stainless steel, aluminium, copper, low-alloy steel and non-metal also are widely used in all positions. Butt joint, lap joint, T-joint, edge joint, corner joint are the common types of joints used in welding. The incompletely fused spots like porosity that occurs …
Published in Journal of Industrial Safety Engineering · Vol. 6, Issue 2, 2019 · pp. 26–31 Read article
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Acoustic Logging Methods in Fractured and Porous Formations
Abstract: Abstract Formation fractures have significant importance in the rocks’ permeability of oil and gas reservoirs. In real conditions, the opening of vertical fractures exceeds the opening of horizontal fractures and the permeability of reservoirs in conditions of horizontal wells is higher than in vertical conditions. For the sonic log longitudinal waves, unlike the transverse waves, the attenuation rate strongly depends on the wave path direction. It is shown that the …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 2, 2017 · pp. 28–35 Read article
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Effect of Polymer Crosslinking on Drug Release Kinetics
Abstract: In order to improve treatment effectiveness and minimise adverse effects, polymer-based drug delivery systems are often used to produce regulated and sustained drug release. Polymer crosslinking, which alters the structural, mechanical, and degrading characteristics of the polymer matrix, is one of the key elements affecting drug release kinetics. The porosity, swelling behaviour, and rate of degradation of the polymer are all impacted by the crosslinking process, which may be accomplished …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 636–647 Read article