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141 articles for “Porosities”
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Investigation of Dielectric Properties of a Novel Hybrid Polymer Composite using Industrial and Bio-waste
Abstract: AbstractFly ash is an industrial waste which creates environmental problems. Coir dust is a byproduct of coir fiber production. Novel low-cost hybrid polymer composite using coir dust and fly ash particle reinforcement is prepared. Investigation of dielectric behavior of this hybrid polymer composite proves its efficacy as a high-value marketable product. Individual compacts of coir dust, fly ash, coir dust and fly ash are also prepared for comparison with the …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 22–27 Read article
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An Optimize Formulation to Synthesis of size Controlled Hydrophobic Starch Acetate Nanoparticles using Box-Behnken Design
Abstract: The best way to improve the overall performance of native starch is by chemical modification. In recent years, hydrophobically modified starch has attracted considerable attention for the design and manufacture of novel nanoparticulate drug delivery carriers. The purpose of this research was to synthesize hydrophobic starch nanoparticles (NPs) and to optimize process factors through the use of response surface methodology (RSM). The corn starch acetate (CSA) NPs was synthesized using …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 32–54 Read article
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An Investigation into the VariablesInfluencing the Densification of Spark Plasma Sintered, 40 Weight Percent Ni-Fe Nano Powder
Abstract: The mechanical alloying process that included high-energy ball milling resulted in particle sizes of 25 mm and 80 mm on average for the Ni-Fe alloy that included 40 percent Ni. At room temperature, highenergy planetary ball milling was carried out over timespan ranging from 15 hours to 60 hours. All of the samples were sintered at the same conditions, which included a temperature of 650 degrees Celsius and a pressure …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 29–35 Read article
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Effects of Fracture Properties on Oil Recovery in Tight Reservoirs
Abstract: Unconventional reservoirs, characterized by low permeability are gradually becoming a force to reckon with in today’s world owing to the rapid depletion of conventional resources. However, low oil production from tight reservoirs can be mitigated by implementing hydraulic fracturing. In this study, Schlumberger’s eclipse-100 simulator was used to simulate various scenarios in order to determine the best fracture geometry and the effects of fracture properties on oil recovery. The properties …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 3, 2016 · pp. 12–31 Read article
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Relative Permeability Study in Part of Geleki Oil field of Upper Assam Basin
Abstract: Relative permeability is a critical parameter for evaluation of reservoir performance. Relative permeability is a direct measure of the ability of the porous medium to allow flow of one fluid when two or more fluids are present. This flow property is the composite effect of pore-geometry, wettability, fluid saturation, saturation history, reservoir temperature, reservoir pressure, overburden pressure, rock-types, porosity and permeability types. The relative permeability curves are very important in …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 9–14 Read article
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A Review on Study of Casting Defect in Automobile Component
Abstract: Casting process is the most widely used process in manufacturing industries especially in automotive products. Production of casting involves various processes like pattern making, molding, core making and melting. It is very difficult to produce defect free castings. In developing country, foundry industries suffer from poor quality and productivity due to involvement of number of process parameters in casting process, which challenges explanation about the cause of casting defects. The …
Published in Journal of Production Research & Management · Vol. 8, Issue 2, 2018 · pp. 8–13 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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A Review Paper on Minimisation of Sand Casting Defects through Quality Improvement Methods
Abstract: Casting is a process of producing near net–shape metal components. It requires detailed planning, execution and quality inspection to ensure not only the dimensional accuracy of casting parts but the metallurgical integrity and mechanical properties of castings. This paper reviews the different types of casting defects such as shrinkage porosity, cold shut, sand inclusions, mould failure, surface hardening occurring in foundries. These defects directly affect on profitability and quality level …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 3, 2017 · pp. 10–17 Read article
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Effects of Weight Fractions on Properties of Aluminium-Fly Ash Metal Matrix Composites
Abstract: With particles of fly ash as the particulate addition, the properties of pure Al can be greatly improved. The incorporation of fly ash brings significant changes in some of its core properties like hardness, density, stiffness, strength, wear resistance. A comparison of the mechanical properties of pure Al have been done with three sets of Al-fly ash composites containing 6, 8 and 10% by weight fly ash which are manufactured …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 3, 2016 · pp. 44–48 Read article
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Predicting flexural strength from alccofine and fly-ash as partial replacement of cement for high strength concrete
Abstract: Materials of different sourced has been applied by researchers to partially replace cement, this has been producing commendable results, the intension of these studies are to reduce waste generation from some of this materials and reduced cost, most of this material are sourced locally, this implies that it will be economical for construction engineers as this concept are achieving tremendous results, the study is to monitor flexural strength from Alccofine …
Published in Recent Trends in Civil Engineering & Technology · Vol. 11, Issue 1, 2021 · pp. 40–64 Read article
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Autonomous Optimization, Method Design of Casting and Its Experimental Validation: A Case Study
Abstract: The metal casting is a complicated but a mass production manufacturing technique. But on the otherhand, the chances of casting rejection are also more if proper attention is not made at every stage ofcasting production. In the metal casting process, higher yield and minimum defects level are expectedby the foundry industries. In the present global and competitive world metal casting industries needsto perform efficiently with a reduction in rejections. This …
Published in Trends in Machine design · Vol. 8, Issue 1, 2021 · pp. 1–10 Read article
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Performance Evaluation of Modified Cold Mix Asphalt by Some Waste Materials
Abstract: The aim of study is to evaluate modified CMA volumetric, mechanical and durability properties by some waste materials. Previous studies described that the mechanical properties of CMA are shown to be influenced by different factors including base bitumen grade, porosity of the mix, curing time and additives. The current research is designed to use the waste and by-product materials as filler to enhance the conventional CMA early age strength. Hence, …
Published in Trends in Transport Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 33–53 Read article
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Exposure of Nanoparticle Leads to Health Hazards
Abstract: Nanotechnology is a technique used for the production of materials of the nanoscale level. This is a new development in technology which usually entails some hazards as well as advantage to society. Thus nanomaterials are well known for their various beneficial uses in the medicines, engineering, computer, etc., in spite of that it is associated with many hazards related to human health. The exposure of nanomaterials through dermal contact, inhalation, …
Published in Research and Reviews: A Journal of Toxicology · Vol. 9, Issue 3, 2019 · pp. 7–18 Read article
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Development of Environmentally Friendly Concrete by Incorporating Rubber and Leather Waste
Abstract: The valorization of post-consumer polymeric waste into high-performance composite materials offers a sustainable strategy for advancing circular economy principles and reducing environmental impacts.This study investigates the feasibility of utilizing recycled crumb rubber from end-of-life tires and leather-derived polymeric waste from the footwear industry as sustainable fillers in polymer-modified cementitious composites. Crumb rubber and processed leather waste were incorporated as partial replacements for natural fine aggregate at replacement levels of 0%, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 547–563 Read article
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Intelligent Failure Detection in Biomedical Composite Materials Using Machine Vision
Abstract: The biomedical composite materials are intelligent failure-detecting, which is necessary to ensure the reliability, safety, and durability of the current healthcare equipment. This paper describes a machine vision design, which incorporates convolutional neural networks, transformer models, and ensemble learning to correctly detect and localize material defects. The proposed system takes advantage of the capabilities of high-resolution imaging, advanced preprocessing software, and deep feature learning in the identification of the intricate …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Thermo-Structural Machine Learning Framework for Malicious Sample Detection and Validation in Polymer Composite Materials
Abstract: The increased use of polymer composites in aerospace, automotive, biomedical and industrial applications has increased the urgency of developing dependable methods to detect malicious samples with counterfeited resins, unauthorized additives, recycled components, hidden flaws, or purposefully degraded physical properties. Most current machine learning techniques have focused either on isolated spectral analysis or detecting flaws in materials; as such, they are unable to perform joint verification of both chemical authenticity and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Evaluation of Polymer-Ceramic Scaffolds for Dental Bone Regeneration
Abstract: Looking at the aspects of periodontal disease, traumatic injury, congenital defects, and the preparation of implant sites, the deficiency of dental bone, and its reconstruction, which has been simplified by many by oral and maxillofacial surgery, has proven to be a very hard and tedious task. There are many solutions which are clinically accepted, as the use of auto, allo, and xenografts, very common practices in surgery, but they come …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Bio-Inspired Polymer Composites for Artificial Cartilage Replacement
Abstract: The rising cases of osteoarthritis, traumatic injuries, and degenerative joint diseases are also putting pressure on the new material that is durable, biocompatible and mechanically resilient to act as artificial cartilage. The normal articular cartilage is composed of collagen fibers, protein glycids and water in the interstitium. These elements provide it with excellent load bearing quality, lubrication and wear resistance. Due to the limited self-repair capacity of cartilage and the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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An Overview on the Characterization and Investigation of Polymerized Bio-Ceramics for Bone Regenerative Applications
Abstract: Many osseous faults resulting from fracture offer inherent capacity of the body to overhaul and activate the bone grafts for recovery process. In the early development, nonautologous bone grafts made of Titanium and stainless steel were suitable because of their mechanical strength, corrosion resistance, biocompatibility and durability. Biodegradable polymers belonging to the family of polymers and bioceramics also, play a major role in orthopaedics. The polymers, poly glycolic acid, poly …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 843–853 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