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1920 articles for “investment”
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Investigation on The Effect of Carbon Fiber Reinforcement on The Mechanical and Physical Properties of FDM 3d Printed PLA
Abstract: In this work, the effects of annealing on the physical properties and mechanical behavior of short-carbon-fiber-reinforced polylactic acid (CF/PLA) composites made using fused deposition modeling (FDM) are systematically investigated. Pristine PLA and CF/PLA composites with 10% fibers have been made and evaluated in accordance with ASTM standards. Tensile, bending, and hardness tests were used to evaluate the performance of as-received and annealed composites. The tensile and hardness properties of PLA …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 284–298 Read article
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Investigation of Exergy and Energy with Fibre Reinforced Plastic Composite (FRP) Tube Based Solar Still using PCM material via Theoretical and Computational Approach
Abstract: A FRP (Fibre Reinforced Polymer) material-based solar still is an advanced design approach in solar desalination systems, where the traditional construction materials (like metal or concrete) are replaced or enhanced with FRP composites. A FRP composite material tubular solar still is a lightweight desalination equipment with a substantial condensing area in comparison to other types of solar stills. Nonetheless, their effectiveness is often limited by fluctuating climatic circumstances. This study …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 66–78 Read article
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Experimental Investigation on the Impact of Graphene on Fly Ash–Based Portland Pozzolana Cement Concrete
Abstract: This study presents a detailed investigation into the influence of incorporating phase change materials (PCMs) on the mechanical properties of cement mortar, with particular emphasis on compressive and flexural strength at various curing ages. Both organic and inorganic PCMs were utilized as partial replacements for cement at proportions of 5%, 10%, and 15% to evaluate their performance. The experimental results reveal a clear distinction in behavior between the two categories …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1865–1871 Read article
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Investigation of Mechanical Properties of Banana, Linen and Their Hybrid Reinforced Composite Laminates in Adverse Condition and Analyze Using ML
Abstract: This research investigates the mechanical performance of composite laminates reinforced with banana and linen fibers, focusing on both individual and hybrid fiber combinations. The primary objective is to assess how these natural fiber composites behave under extreme environmental conditions, particularly high humidity and fluctuating temperatures, which are common in aerospace and automotive applications.Key mechanical properties—tensile strength, flexural strength, and impact resistance—are experimentally evaluated to assess the performance and long-term reliability …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 25–31 Read article
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Experimental and Numerical Investigation of Corrosion-Induced Failures in Copper-Tin Alloy (Cu-Sn) and Aluminum-Magnesium Alloy (Al-Mg) Connectors: A Stress–Corrosion Coupling Analysis
Abstract: The utilization of an integrated experimental and finite element modelling (FEM) methodology, this study investigates the degradation and failure mechanisms in polymer composite electrical connectors exposed to aggressive environmental conditions. Epoxy- and polyamide-based composites, reinforced with carbon and glass fibers, were subjected to accelerated salt spray and humidity–temperature cycles to simulate prolonged outdoor exposure. Electrochemical and environmental aging experiments revealed that chloride ions and moisture ingress were responsible for matrix …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 366–379 Read article
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Investigating the Influence of Process Parameters on Photochemical Machining of Phosphor Bronze Alloy Microchannels
Abstract: Microchannels are widely employed in microfluidic devices, biomedical systems, and compact heat exchangers, where their functional efficiency depends strongly on surface finish, dimensional control, and edge quality. Traditional machining techniques often face limitations in producing such features with the required precision, prompting the use of advanced micromachining methods. In the present work, photochemical machining (PCM) has been applied to fabricate serpentine-shaped microchannels in phosphor bronze. The study systematically investigates the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 837–846 Read article
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Experimental Investigation into Surface Roughness of Polished Zinc Plate with Ultrasonic Vibration Using Single Pole Magnetic Abrasive Finishing
Abstract: This research investigates how applying ultrasonic vibrations influences the surface finish quality of zinc plates when using the Single Pole Magnetic Abrasive Finishing (SP-MAF) method. In SP-MAF, magnetic abrasive particles (MAPs)—amalgamation of ferromagnetic and abrasive materials—are guided by a magnetic field to achieve precise surface finishing. Introducing ultrasonic vibration improves the effectiveness of the flexible magnetic abrasive brush (FMAB), which forms as the MAPs align along the magnetic field lines. …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1166–1178 Read article
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Consumer Awareness and Adoption Barriers of E-Pharmacy Services in Delhi/NCR: A Mixed-Methods Investigation
Abstract: Background: The rapid digitization of India's pharmaceutical market has positioned e-pharmacies as a transformative force; yet, consumer adoption remains significantly low despite growing awareness. Objectives: This study investigates consumer awareness levels, purchasing behaviors, trust perceptions, and adoption barriers regarding e-pharmacy services among urban Indian consumers. Methods: A sequential explanatory mixed-methods design was employed. Quantitative data were gathered via a structured questionnaire administered to 65 respondents in Delhi. Qualitative insights were …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 16, Issue 2, 2026 Read article
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Thermo-Hydraulic Enhancement of Annular Finned Shell-and-Tube Heat Exchangers Using Epoxy-Based Polymer Composites: A Material–Geometry Coupled CFD Investigation
Abstract: Shell-and-tube heat exchangers remain a backbone of industrial thermal systems, yet their performance is often limited by relatively low shell-side heat transfer and the weight and cost associated with conventional metallic components. In this context, the integration of polymer composite materials offers a promising pathway toward lightweight, corrosion-resistant, and performance-tunable heat exchanger designs. The present study investigates the thermo-hydraulic performance of a straight-tube shell-and-tube heat exchanger equipped with annular fins, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 669–684 Read article
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Experimental and CFD Investigation of an Epoxy-Based Thermally Conductive Polymer Composite U-Tube Shell-and-Tube Heat Exchanger: A Lightweight Alternative to Conventional Metal Systems
Abstract: Shell-and-tube heat exchangers continue to play a critical role in industrial thermal systems; however, their conventional design based on fully metallic materials often leads to challenges related to weight, corrosion, and cost. In recent years, thermally conductive polymer composites have emerged as promising alternatives, offering improved corrosion resistance and design flexibility. In this study, the thermo-hydraulic performance of a U-tube shell-and-tube heat exchanger is investigated by partially replacing conventional metallic …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 685–700 Read article
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Investigating the Mechanical Properties and Microstructure of AA 7074 Composites with Silicon Nitride Reinforcement
Abstract: This study investigates the mechanical and microstructural properties of AA 7074 aluminium alloy reinforced with 1%, 3%, and 5% by weight of silicon nitride (Si₃N₄), fabricated via the stir casting method, intended for structural aerospace applications. A thorough series of mechanical tests—comprising tensile, compression, hardness, impact, flexural, and wear tests—was performed to assess the influence of differing reinforcing content. The composite containing 5 wt% Si₃N₄ (SN5) demonstrated the most pronounced …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 268–281 Read article
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Thermo-hydraulic Performance of Annular-Finned Double-Pipe Heat Exchanger: Numerical and Experimental Investigation of Metallic and Polymer Composite Tube Wall Materials
Abstract: Double-pipe heat exchangers are central to the process industries — dependable, easily maintained, and straightforward to fabricate. Their conventional form relies on metallic tube materials, most often copper or stainless steel. Both metals conduct heat well, but they are dense, prone to corrosion in aggressive service environments, and increasingly at odds with the light-weighting goals that drive modern system design. Fibre-reinforced polymer composites, epoxy-based materials, and thermally enhanced thermoplastics such …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 891–909 Read article
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Experimental Investigation of Polymer Composite-Based Protective Structures for Mitigating Crash-Induced Mechanical Abuse in Lithium-Ion Batteries
Abstract: The objective of this paper is to determine the effectiveness of using polymer composite protective structures to protect against the mechanical abuses associated with crash impacts that affect lithium ion batteries in terms of their structural integrity and their overall safety. In addition to their use in electric vehicles, lithium ion batteries are also being increasingly used in renewable energy based energy storage systems because they have high energy densities, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Investigation on bi-layer knitted fabric produced using recycled polyester and banana fiber for improved moisture and thermal comfort properties
Abstract: This research investigates thermal comfort characteristics of bi-layer knitted fabrics made of banana fibers and recycled polyester (rPET). The main aim is to maximize thermal comfort of textile products by taking advantage of the distinctive characteristics of these two varieties of eco-friendly materials. Recycled polyester and banana fibers were combined to make the bi-layer knitted materials, which is produced as separate inner and outer layers to maximize performance. The features …
Published in Journal of Polymer & Composites Read article
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Investigation on bi-layer knitted fabric produced using recycled polyester and banana fiber for improved moisture and thermal comfort properties
Abstract: This research investigates thermal comfort characteristics of bi-layer knitted fabrics made of banana fibers and recycled polyester (rPET). The main aim is to maximize thermal comfort of textile products by taking advantage of the distinctive characteristics of these two varieties of eco-friendly materials. Recycled polyester and banana fibers were combined to make the bi-layer knitted materials, which is produced as separate inner and outer layers to maximize performance. The features …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 19–24 Read article
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Investigation to Enhance Performance of Finned U-Tube Shell-and-Tube Heat Exchangers Using Epoxy Based Polymer Composite Material
Abstract: Shell-and-tube heat exchangers remain indispensable in thermal engineering systems; however, conventional metallic configurations often face challenges related to corrosion, weight, and limited thermal optimization. In this study, a novel approach is proposed by integrating epoxy-based polymer composite materials with finned U-tube geometries to enhance thermo-hydraulic performance while addressing material limitations of traditional systems. The work focuses on the development and evaluation of a hybrid heat exchanger comprising a mild steel …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 618–633 Read article
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Investigation of Robotic Transverse Twin-Wire GMAW for Large-Scale Wire-Arc Additive Manufacturing Applications
Abstract: Bulk metal additive manufacturing using wire-arc processes has gained significant attention for fabricating large-scale engineering components due to their high deposition rate and material efficiency. In this study, the feasibility and performance of robotic transverse twin-wire gas metal arc welding (GMAW) for bulk wire-arc additive manufacturing (WAAM) is systematically assessed. The research focuses on understanding arc stability, weld bead characteristics, and process–product relationships under high-deposition conditions. Welding current signals from …
Published in International Journal of Robotics and Automation in Mechanics · Vol. 4, Issue 1, 2026 · pp. 36–50 Read article
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Investigation of Discarding Methods for Industrial Plastic Waste
Abstract: Plastic waste management may be a critical issue. Over 300 million metric plenty of plastics are manufacture within the world yearly and about one-half of this volume is for disposal applications, the product that is discarded within a year of their purchase. It's the boon and bane of our times. While there are multiple uses, its waste and thus the resultant pollution clogs up our rivers, oceans, lands and adversely …
Published in Research & Reviews : Journal of Ecology Read article
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Investigating the Quality of Online Education from University-level Students’ Perspective in Bangladesh
Abstract: Coronavirus disease has disrupted the global education system in the year 2020. An online teaching platform was the only alternative to the face-to-face classroom teaching to continue educational activities. The main purpose of the study was to assess the quality of online education from the perceptive of university-level students in Bangladesh. The research found that the class materials, the interaction between teacher and students, interaction among students, technical support availability …
Published in Research & Reviews : Journal of Statistics Read article
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Investigate an Implementation Study of TI-6AL-4V Lattice-based Scaffold Design Using Finite Element Analysis
Abstract: Implementation studies are advised to determine the effectiveness and performance of bone scaffolding in morphology, which has been demonstrated scientifically. The rehabilitation of bone defects, which is still a complex problem in orthopedic surgery, was the subject of an implementation study we provided. Biomaterial scaffolding porosity and pore size are essential in both in vivo and in vitro bone development. However, it has been linked to various drawbacks, including poor …
Published in International Journal of Biochemistry and Biomolecule Research · Vol. 1, Issue 1, 2023 · pp. 28–35 Read article