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16 articles for “Visco-plastic”
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Origins of Several Foam Ample Forms in Materials Science
Abstract: Foam culture refers to the light weight philosophy for the additional subject released from appropriate specific performance in relation to the environment. Regular study has been done to actualize the subject required under ballistic strength of degeneration issues. The cases studied in this article were from polymer functional ceramic issues as well as originating flexible regions. Though, water-purification areas on the coast have origins Ni-nano that uses carbon-tubed analogs to …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 3, 2020 · pp. 32–36 Read article
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Utilization of Egg Yolk as A Non-Toxic Emulsifier in Environmentally Friendly Invert Emulsion Drilling Mud
Abstract: Vegetable oil such as Jatropha has been shown to be a comparable alternative to diesel and mineral oils for environmentally friendly oil based drilling mud. However compatibility of the vegetable oils with the usual chemical additives is still a major challenge that calls for compatible and non-toxic substitutes. This study examined the suitability of hen egg yolk as a non-toxic emulsifier in invert emulsion drilling mud using vegetable oil continuous …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 41–49 Read article
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Study of Mechanical Properties of Self-compacting Concrete
Abstract: Self-Compacting Concrete (SCC) is a high performance concrete, it is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. Self Compacting Concrete has excellent high resistance to segregation and fluidity ensures a high level of homogeneity, minimal concrete voids and uniform concrete strength, providing the potential for a superior level of finish and durability to the structure. This …
Published in Recent Trends in Civil Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 12–18 Read article
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Comprehensive Review of Recycled Aggregate Concrete in Construction: Suitability, Properties, and Sustainable Practices
Abstract: Concrete production, integral to construction and demolition processes, generates substantial waste. This waste can be repurposed as recycled aggregates in new concrete production, offering sustainable solutions and addressing resource management and environmental concerns. This literature review explores the utilization of construction and demolition waste as aggregates in recycled aggregate concrete (RAC), with a focus on key areas, including the suitability of RAC, its fresh properties, mix design, mechanical characteristics, and …
Published in Recent Trends in Civil Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 1–8 Read article
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Investigation of Local Weighting Materials as a Substitute To Barite In Drilling Mud Formulation
Abstract: Weighting materials are important components needed to increase the density of drilling mud in order to provide enough hydrostatic pressure to balance abnormalpore pressures. In Nigeria, millions of dollars are spent annually in importing barite to serve this purpose. However, there exists large reserves of weighting materials such as barite, hematite, dolomite, calcite, ilmenite in Nigeria hence the need to investigate the suitability of these materials as substitute for imported …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 39–48 Read article
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Comprehensive Review of Recycled Aggregate Concrete in Construction: Suitability, Properties, and Sustainable Practices
Abstract: Concrete production, integral to construction and demolition processes, generates substantial waste. This waste can be repurposed as recycled aggregates in new concrete production, offering sustainable solutions and addressing resource management and environmental concerns. This literature review explores the utilization of construction and demolition waste as aggregates in recycled aggregate concrete (RAC), with a focus on key areas, including the suitability of RAC, its fresh properties, mix design, mechanical characteristics, and …
Published in Recent Trends in Civil Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 1–8 Read article
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Characteristic Studies on Self-compacting Concrete using Nano Silica with Copper Slag
Abstract: The paper examines the possibility of using copper slag as partial replacement of sand and Nano Silica as partial replacement of cement and super plasticizer and Viscosity Modifying Agent are used in self compacting concrete, in order to overcome problems associated with cast-in-place concrete. Self compacting concrete does not require skilled labours. The percentage of copper slag to be added is 10 %, 20 %, 30 % of total weight …
Published in Journal of Industrial Safety Engineering · Vol. 1, Issue 1, 2014 · pp. 1–11 Read article
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Parametric Optimization of Waste Plastic Fuel Parameters
Abstract: AbstractIn this article, the fuel production through waste polythene and plastic with the help of zeolite as a catalyst is presented. First of all, prepare a light steel airtight vessel on which there is a lid with a hole that is connected to long galvanized steel pipe. The container is filled ¾ with waste plastic and polythene at room temperature then the temperature is increased up to 300–450°C by using …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 26–30 Read article
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Production of liquid fuel from waste plastic using batch catalytic pyrolysis process
Abstract: Waste polystyrene from households and retailing shops are recognized to be the major sources of environmental problem. On the other hand, it represents a source of energy and valuable chemical products. Pyrolysis as a technique of chemical recycling of waste plastic is as an environmentally and economically acceptable option for converting waste plastics into useful resources. In this study, the operating conditions studied were; temperature was varied from 430 to …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 2, 2019 · pp. 34–43 Read article
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Numerical Modeling of Elastoviscoplastic Material Model in Strain Space
Abstract: Conventional material non-linear analysis works with stress-space plasticity. It uses yield function, loading-unloading criteria, and flow rule in terms of stress parameters. It shows ambiguity in loading-unloading criteria for softening materials. During such situations, an alternative strain-space formulation becomes quite useful to carry out analysis of such materials. The viscoplastic response of materials requires the time integration of system of non-linear first order differential equations. In viscoplasiticy, the constitutive equation …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 1, 2018 · pp. 9–14 Read article
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Polystyrene Plastic Waste into Liquid Fuel Using Silica-Alumina Catalyst, Extracted from Rice Husk
Abstract: Catalytic Pyrolysis of Polystyrene (PS) into fuel like products using silica alumina catalyst that was extracted from rice husk was investigated over temperature range of 430–470°C. The output of catalytic pyrolysis was liquid oil, solid residues (char) and gaseous fraction. The product yields as a function of temperature, time and catalyst amount were studied. High conversion of liquid (48.8%) was achieved at 430 and 450ºC in the presence of 12.5 …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 15–31 Read article
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Computational Modeling of Fluid Flow through A Fractured Media under Overburden Pressures
Abstract: Computational analyses were conducted to investigate fluid flow characteristics of a real fractured media. Finite element (FE) and computational fluid dynamics (CFD) analyses were implemented to carry out these computational analyses. The fractured media was exposed to external pressurization to predict permeability and asperity deformation. Furthermore, a series of CFD-FE analyses were also conducted to determine the reduction in permeability of the fractured media under the external pressure. An elastic-plastic …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 25–43 Read article
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Recovery of Liquid Hydrocarbon Fuels from Polypropylene Waste Plastics via Catalytic Pyrolysis
Abstract: Process of pyrolysis is a thermo-chemical method conducted at high temperatures and usually in presence of catalysts. Dissimilar type of natural and synthetic catalysts are used for alteration of organic wastes into cherished fuels. The aim of this work is conversion of waste production of liquid fuel using catalyst that produced from rice husk ash. Waste plastic was pyrolyzed at temperature range 430-470oC and obtained products were liquid fuel, gas …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 33–48 Read article
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Differential Scanning Calorimetry, Thermogravimetric Analysis, and Dynamic Mechanical Analysis for Advanced Medical Materials
Abstract: Modern healthcare depends on advanced medical products that come up with new ways to care for and help patients. Characterizing these products is important to make sure they are safe, effective, and work well. While there are many analysis methods, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), and Dynamic Mechanical Analysis (DMA) are the most important ones for checking the temperature and mechanical qualities of medical materials. By measuring the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 57–72 Read article
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DESIGN AND ADDITIVE MANUFACTURING OF SOFT CAPTURE DOCKING SYSTEM USING MR FLUID
Abstract: This paper emphasizes the development of Satellite docking system using Magnetorheological fluid. Docking is a mechanism where a space craft tends to adhere with another space craft or an international space station maneuvering on its own. Magnetorheological fluid is a smart material that is controllable using magnetic field. When a magnetic field is applied to Magnetorheological fluid its viscosity increases and becomes viscoelastic and the liquid state changes to solid …
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 3, 2018 · pp. 14–23 Read article
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Simultaneous Improvement of Mechanical Properties and Thermal Stability of Polyvinyl Chloride Nanocomposite by Magnesium Aluminum-Layered Double Hydroxide
Abstract: The application of nanoclays in polyvinyl chloride (PVC) is limited as the organic modifier of conventional nanoclays can degrade PVC. Using usual nanoclays could reduce thermal stability due to the catalytic effects on PVC degradation, so the main chalenge is to find suitable nanoclay for PVC. The effects of two nanoclays, MgAl-layered double hydroxide and alkylammonium-modified montmorillonite, were studied on the mechanical properties of PVC nanocomposites. Dioctyl phthalate (DOP)-plasticized PVC …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 825–837 Read article