Search
42 articles for “surface porosity”
-
Current Status of Thermal Spray Coatings for High Temperature Corrosion Resistance of Boiler Steel
Abstract: In the thermal power plants, the conventional steels used in boilers are unable to sustain the hot corrosion issues. To reduce the problem of hot corrosion in the boilers, many types of surface coatings have been used in the recent past. Thermal spray techniques have been used to develop these coatings on the components of boilers. Thermal spray coating techniques are important means to develop coatings to increase the corrosion …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 29–35 Read article
-
Development and Mechanical Characterization of Polymer based Bio Composite Filaments for FDM Applications
Abstract: Additive Manufacturing (AM) is an advanced fabrication process capable of producing complex and intricate components to meet diverse industrial and customer demands. For small-scale producers and researchers, FDM is the most straightforward, affordable, and easily accessible of the several AM processes. The majority of conventional polymer feedstocks used in FDM lack sufficient mechanical strength and thermal stability, which limits their use in load-bearing or structural components. This effort aims to …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 743–751 Read article
-
Review of Research on Pozzolanic Materials for Cement Blending and Concrete Applications
Abstract: The growing environmental concerns associated with cement production, particularly its high carbon footprint, have driven research into sustainable alternatives such as supplementary cementitious materials (SCMs) derived from agricultural and industrial waste. This study synthesizes findings from recent investigations into the pozzolanic potential of basil plant ash (BPA), rice husk ash (RHA), and stockpiled fly ash (FA), evaluating their processing methods, microstructural characteristics, and performance in concrete applications. BPA, being derived …
Published in Recent Trends in Civil Engineering & Technology · Vol. 15, Issue 3, 2025 · pp. 1–6 Read article
-
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
-
Generative Design of Bioactive Orthopedic Composites for Fracture Repair Using an Integrated Conditional GAN–Transformer Framework: A Multi-Objective Approach
Abstract: Orthopedic composite implants for fracture repair must simultaneously satisfy conflicting mechanical and biological demands: high fracture toughness, sufficient compressive stiffness, and bioactive surface chemistry enabling osteoblast adhesion and mineralization. Existing design approaches rely on trial-and-error experimentation, yielding sub-optimal trade-offs between these objectives. This paper presents an integrated conditional Generative Adversarial Network–Transformer (cGAN-T) framework for fully computational, multi-objective generative design of hydroxyapatite (HA)-reinforced polymer composite microstructures targeting Orthopedic fracture repair. A …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 21–35 Read article
-
Thermodynamic Analysis and Slow Pyrolysis Product Characterization are Used to Assess Rice Straw for Bio-char Production
Abstract: This work explores the viability of using slow pyrolysis to produce bio-char using rice straw as a feedstock. The objective is to characterize the resulting bio char and analyse the thermodynamic processes involved in its formation. Rice straw, an abundant agricultural residue, was subjected to slow pyrolysis under controlled conditions. The produced bio char was characterized using various analytical techniques, including scanning electron microscopy, elemental analysis, and surface area measurements. …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 13, Issue 2, 2024 · pp. 26–29 Read article
-
Enhanced Mechanical Properties of AZ31 Magnesium Alloy Composite Reinforced with Carbon Nanotubes and Nano hydroxyapatite
Abstract: Magnesium alloys represent a novel category of biodegradable materials, offering numerous advantages in addressing the limitations associated with conventional biomedical materials. Magnesium-based metallic biomaterials offer a promising solution for fixing fractures, ensuring effective treatment without the inconvenience of subsequent implant removal procedures. In the present work, AZ31 Mg-alloy was chosen as the base material. Five specimens were meticulously fabricated, each varying in weight percentages of reinforcement materials: 0wt%, 0.5wt%, 1wt%, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 206–217 Read article
-
Tensile and Microstructural Behaviour of Friction Stir Welded AL7050 Hybrid Composites Reinforced with Multani Mitti and Cow Dung Ash
Abstract: The study examines Al7050 aluminum alloy composites made by stir casting and bonded by friction stir welding (FSW), supplemented with environmentally friendly Multani Mitti (MM) and cow dung ash (CDA). The study assesses the effects of different hybrid reinforcement contents (0–8 vol%) on the microstructural properties, hardness, and tensile behavior of the base alloy and its FSW joints. Tensile testing reveals an initial decline at 2% reinforcement but a notable …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 78–89 Read article
-
Fabrication and Comparative Study of Synthetic and Eggshell Waste Derived Hydroxyapatite-Based Composites for Biomedical Applications
Abstract: Hydroxyapatite is widely used as a bioceramic material in orthopedic and dental field because of its exceptional biocompatibility and bioactivity. Hydroxyapatite (HAp) doped with several mineral ions has been frequently reported to further enhance its bioactive nature. Several studies indicate that biological waste materials can serve as calcium sources for hydroxyapatite synthesis, with eggshells being one such promising source. In the present work, two types of hydroxyapatite were synthesized: pure …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 33–46 Read article
-
Near-Surface Seismic Refraction Tomography; a case study for geotechnical application
Abstract: Usually, among geophysical techniques, seismic refraction methods are used to investigate near surface geology for engineering purposes. In these study physical parameters, longitudinal seismic wave velocities were used to characterize the shallow subsurface layers for geotechnical application. The physical response of subsurface materials varies as the structure, porosity, fluid saturation, composition and tie-up vary. These variations primarily viewed in the first arrival time of seismic waves. With the necessary steps, …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 2, 2019 · pp. 18–26 Read article
-
Electrospun Antibacterial Polymer Composite Scaffolds Incorporating Silver Nanoparticles for Enhanced Wound Healing
Abstract: The present study focuses on the synthesis and characterization of electrospun polycaprolactone (PCL)/chitosan nanofiber scaffolds incorporated with silver nanoparticles (AgNPs) to enhance antibacterial activity and biological performance. Uniform nanofibers with controlled morphology were fabricated using electrospinning, and different AgNP concentrations were introduced to investigate their influence on fiber structure, antimicrobial response, and cellular interactions. Scanning electron microscopy (SEM) revealed that increasing AgNP content resulted in well-distributed fibers with reduced diameters, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 1025–1051 Read article
-
Coupled Magneto–Thermal–Diffusion Transport in an Unsteady Maxwell Polymer Fluid with Activation Energy over a Porous Stretching Surface
Abstract: The present study investigates the combined effects of activation energy and diffusion-thermo (Dufour) processes on unsteady magnetohydrodynamic (MHD) flow, heat, and mass transfer of a Maxwell viscoelastic fluid past a porous exponentially stretching vertical sheet. The electrically conducting and incompressible polymeric fluid flows through a saturated porous medium under a transverse magnetic field. The governing momentum, energy, and concentration equations are transformed into nonlinear ordinary differential equations using similarity transformations …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 581–590 Read article
-
Dependence of Adhesion Strength of Plasma Spray on Coating Surface Properties
Abstract: It is well known that thermal plasma spray coatings have diversified utilizations, but not vividly in use, mainly because of high cost of spray grade powder, for development of thick coating > 50 µm on metal substrates. Present investigation aims at depositing plasma spray coating on metals using low-cost/waste materials. A mixture of fly-ash + 20 weight percent of Quartz + 20 weight percent of illmenite is used for coating …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 57–64 Read article
-
Experimental Study on the Impact of Polymer (PAM) in Enhancing Oil Recovery in Upper Assam Basin Oil fields
Abstract: The Upper Assam Basin, one of India’s most mature and extensively exploited hydrocarbon provinces, is experiencing declining oil production due to reservoir depletion and unfavorable crude oil–brine–rock (COBR) interactions. In this context, alkali–polymer (AP) flooding has emerged as a promising chemical enhanced oil recovery (EOR) strategy. AP flooding reduces interfacial tension (IFT) through in-situ surfactant generation by alkali and improves sweep efficiency via polymer-based mobility control, typically using polyacrylamide (PAM). …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 283–296 Read article
-
Valorization of Human and Cattle Dental Waste into Functional Composite Biomaterials: A Detailed Comparative Analysis
Abstract: This study investigates the conversion of human and cattle (goat and cow) teeth into bioactive hydroxyapatite-based composites and presents a detailed comparative evaluation of these biogenic materials with laboratory-synthesised (synthetic) hydroxyapatite (HAp). In this work, hydroxyapatite was extracted from human and bovine teeth through controlled calcination and milling, while synthetic HAp was prepared using a standard wet chemical precipitation route. All materials were subsequently sintered at 900 °C and fabricated …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 340–354 Read article
-
Investigating The Influence of Sic Reinforcement on The Mechanical and Tribological Properties of PA12 Polymer Composites in SLS
Abstract: The study investigates the mechanical and tribological performance of neat PA12 polymer and SiC-reinforced PA12 polymer composites made via Selective Laser Sintering (SLS). To evaluate just how reinforcement has influence upon overall performance, we incorporated into the PA12 polymer matrix a constant amount of 5 wt.% of Silicon Carbide (SiC). Mechanical testing focused on both tensile and fatigue behavior and testers conducted it with a Servo-Hydraulic Multipurpose High-Capacity Fatigue Test …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 541–554 Read article
-
A Review on Hybrid Inorganic–Polymer Analog Nanocomposites Incorporating Pozzolanic Wastes and nano-Additives
Abstract: The recent progress of polymer matrix nanocomposites (PMNCs) reveals that the performance of matrix and filler is at the core of matrix–filler interaction, interfacial bonding, and well-controlled distribution of nanoscale reinforcements. Applying these concepts, we consider inorganic particulate systems as hybrid nanocomposites, in which a discontinuous inorganic matrix is effectively reinforced via synergistic co-incorporation of pozzolanic wastes and nano-additives. In the composite system described above, silica-, alumina-rich pozzolanic materials serve …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 131–141 Read article
-
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
-
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 Read article
-
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