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267 articles for “pre-stressed materials”
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Design and Performance Evaluation of PLA-based Umbrella Wheels for Stair-Climbing Robotic Applications
Abstract: Staircase climbing robots require a complex design capable of navigating various stair configurations. A crucial component of such robots is the wheel mechanism. This paper focuses on the umbrella wheel mechanism and its application in staircase climbing robots. In this study, a PLA–based umbrella wheel structure is developed and fabricated using fused deposition modeling (FDM) for application in stair-climbing robots. The umbrella wheel geometry enables transformation from a circular rolling …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 808–824 Read article
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Corrosion and Corrosion Protection of Cast iron due to Bio-organism
Abstract: Cast iron is a high tensile strength metal. It is generally used for making tools, pipe fitting, electrical fitting equipment and rail track. It interacts with corrosive substances to develop electrochemical cell on their interface. Corrosive substances are acids, bases, salts, bio-wastes, particulates and pollutants. These substances produce hostile medium for materials. These harmful wastes discharge by industries, households, agricultural, urbanization, development of infrastructure, construction works, thermal power stations, hydropower, …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 2, 2025 · pp. 105–114 Read article
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A Numerical Study on Static and Dynamic Characteristics of Electromagnetic Air Compressor used in Household Refrigerators
Abstract: With the development of high-strength magnetic material, moving magnet linear compressors have been gradually introduced in the fields of refrigeration and cryogenic engineering, especially in Stirling. This paper presents computational investigations on the static and dynamic characteristics of a moving magnet. Equivalent magnetic circuits and finite element approaches have been used to model the moving magnet linear motor. In this paper an electromagnetic air compressor is used, where the piston …
Published in Journal of Experimental & Applied Mechanics · Vol. 5, Issue 3, 2014 · pp. 8–15 Read article
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Analysis for Pier of Railway Bridge
Abstract: The load-bearing capacity of a pier is determined by the combined effects of the load from the train and the self-weight of the girder it supports. The bending of the pier is influenced by its height, which necessitates a careful assessment of the pier's thickness across various girder spans and pier heights. This evaluation ensures that the pier can withstand the imposed loads while adhering to permissible deflection limits. By …
Published in Trends in Transport Engineering and Applications · Vol. 11, Issue 1, 2024 · pp. 37–43 Read article
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Kinematic Hardening Trend of Flow Formed Seamless Tubes of Aluminium Alloys used for Aerospace
Abstract: The current trend of making seamless tubes of aluminium alloys is flow forming. The strength, ductility and toughness are the properties of interest for proper alloy design of tubes to withstand combustion pressure from propellants, elevated temperature creep and stress corrosion, especially in marine environments. The final strength of the flow formed tubes is known to control these properties. Therefore, an efficient kinematic flow stress simulator has been formulated to …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 2, 2021 · pp. 38–46 Read article
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Sustainable Innovations in Home Decor: Exploring Eco-friendly Paint Materials and Recycled Interior Applications
Abstract: This paper delves into sustainable practices in home decorating, particularly focusing on eco-friendly paint products and innovative interior design solutions. It underscores the significance of zero-VOC and low-VOC coatings for indoor air quality and environmental safety, advocating for their use. Natural colors derived from plant extracts, clay, and minerals are highlighted for their biodegradability and availability in earthy tones, emphasizing their contribution to environmental sustainability. Milk-based paints are explored for …
Published in International Journal of Sustainability · Vol. 1, Issue 1, 2024 · pp. 10–20 Read article
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Codal Validation and Optimization of Gantry Girders Under Variable Wheelbase and Impact Loads: A Review of Analytical, Numerical, and Codal Approaches
Abstract: Gantry girders serve as critical structural elements in industrial facilities such as steel plants, workshops, and heavy manufacturing units, where electric overhead traveling (EOT) cranes operate. The design of these girders is governed by stringent codal provisions to ensure safety under bending, shear, and deflection. However, discrepancies between codal predictions, analytical formulations, and finite element analysis (FEA) results, particularly under variable wheelbase and dynamic impact loads, have been widely reported. …
Published in Journal of Offshore Structure and Technology · Vol. 12, Issue 3, 2025 · pp. 23–29 Read article
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Analysis of Die Corner Gap Formation for Strain Hardening Materials in ECAP Through an Upper Bound Sensitivity Approach: A Comparative Study
Abstract: In recent work, using a proposed central composite factorial analysis, the upper-bound theorem's theoretical concept for the equal channel angular pressing process are used. The upper-bound theorem-based theoretical solutions consider Tresca friction conditions and varied fillet radii at the die channel junction. When using AA5083's uniaxial mechanical properties, isotropic nonlinear work hardening is assumed. The ratio of the cumulative effective plastic strain to the time generated by the deformation zones, …
Published in Trends in Machine design · Vol. 12, Issue 3, 2025 · pp. 1–22 Read article
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Static Analysis of 4-Blade Marine Propeller
Abstract: Ships and underwater vehicles like submarine and torpedoes use propeller for propulsion. In general, propellers are used as propulsions and they are also used to progress significant plunge to propel the vehicle at its operational speed and RPM. Much has been said and published on the development of the marine propeller from the time of antiquity to the present age, but there is more to be done. This paper describes …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 8–21 Read article
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Modeling and Simulation to Monitor Stress–Strain Behaviour from Partial Replacement of Fly Ash and Alccofine on High Developed Concrete Strength
Abstract: This paper monitors the behaviour of stress-strain on model concrete that partially replace cementwith alccofine and fly ash, the stress-strain in concrete normally distort some level of determinant onthe extent of load, the values of strain in concrete is of immense imperative, because it stands for theinflexibility in terms of structural design, the study try to show some rate of stress development onconcrete that monitor lasting deformation if limits that …
Published in Journal of Offshore Structure and Technology · Vol. 8, Issue 1, 2021 · pp. 10–25 Read article
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Mechanical and Functional Performance of PET–Kenaf Fiber Hybrid Composites for Domestic Household Applications
Abstract: This research presents a hybrid composite of recycled polyethylene terephthalate (PET) and Kenaf fibers for sustainable household applications. Polyethylene terephthalate from consumer bottles was reinforced with Kenaf fibers at volume fractions of 10–30% and composites were created through compression molding. Mechanical characterization involved tensile, flexural, impact, and hardness testing where appropriate and was standardized according to ASTM standards, while their interfacial interactions were characterized by imaging through SEM. Linear and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1482–1498 Read article
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THERMAL DISSIPATION SYSTEM APPLIED TO LED DEVICES
Abstract: A thermal dissipation system, based on an aluminum case LED lamp system encapsulated in a PCM device, has been used to reduce LED device temperature, improving thermal performance of the LED unit. Three heating rates have been tested, low (0.6ºC/s), medium (1.3ºC/s) and high (1.8ºC/s). The system has been tested in an experimental prototype at reduced scale, showing a maximum reduction of temperature from 177.5º C to 56º C for …
Published in Journal of Thermal Engineering and Applications · Vol. 8, Issue 3, 2021 · pp. 1–18 Read article
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NanoLEDs The Next Frontier in Optoelectronic Devices
Abstract: Purpose: This study investigates the advancements in NanoLED technology, particularly focusing on their materials, fabrication techniques, and optoelectronic properties. NanoLEDs hold immense potential in revolutionizing display technologies, yet their commercialization faces several challenges. By addressing the gaps in this area, the study aims to deepen the understanding of NanoLED applications, from high-resolution displays to novel devices in wearable electronics and optoelectronics. Design/Methodology/Approach: The review synthesizes recent innovations in NanoLED development, …
Published in Trends in Opto-electro & Optical Communication · Vol. 14, Issue 3, 2024 · pp. 28–33 Read article
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Experimental Techniques for Fatigue Analysis of a Small Wind Turbine Blade
Abstract: During the life span, a wind turbine blade experiences variety of the forces. These forces include gravitational force, centrifugal force, tangential force, thrust force, etc. Thrust force and gravitational forces create edgewise bending stress while the tangential forces (wind pressure) create flapwise bending stress. Centrifugal forces generate direct stress in the wind turbine blade. Most of the wind turbine blades fail due to bending in the flapwise direction. These induced …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 1, 2016 · pp. 34–38 Read article
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Numerical Simulation of Crack Growth in Dynamic Loading Conditions
Abstract: Because it is crucial for forecasting structural failures in engineering applications, crack formation in materials under dynamic loading circumstances has become a crucial study topic. In this work, finite element methods (FEM) are used to numerically simulate fracture propagation in dynamic stress situations. The impact of loading rates, material characteristics, and crack geometries on crack growth patterns are assessed in a thorough parametric research. The work uses sophisticated computational methods …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 2, Issue 2, 2024 · pp. 30–34 Read article
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Impact of Fracture in Geometrical, Material, and Load Rate Characteristics on J-Integral
Abstract: The present study investigates the influence of load rate, geometrical parameters, and material properties on the J-integral behavior of AA2050-T84 aluminum-lithium alloy using three-dimensional elastic–plastic fracture mechanics (EPFM) analysis. Finite element simulations were carried out using the ABAQUS software to evaluate crack driving forces in compact tension (C(T)) specimens under various mechanical and thermal conditions. The study focuses on the combined effects of strain rate, temperature-dependent strain hardening, specimen thickness …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 4, Issue 1, 2026 · pp. 38–45 Read article
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Managing Infertility with Panchakarma— A Case Study of Anovulation Associated with Endometriotic Cysts
Abstract: Infertility is defined as the failure to conceive after 12 months or more of regular unprotected sexual intercourse. In any community, about 5–15% of couples who are of reproductive age have suffer from infertility. A 29-years-old female patient of 29 yrs. old of primary infertility with Pitta Pradhana Vata Prakruti was diagnosed as Anovulation along with Grade- 4 Endometriosis. In Ayurveda, it can be correlated to Bandhya with Vataja yoni …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 12, Issue 2, 2023 · pp. 23–31 Read article
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Aetiology-based Survey Study on Diabetes Mellitus Exploring Diet (Aahar) and Lifestyle (Vihaar) Patterns: An Ayurveda Prospective
Abstract: Introduction: With drastic changes in life-style, dietetic habits, increased industrialization, and pollution; global population of 21st century is being affected with various kinds of Non-Communicable Diseases (NCDs)/Life Style Diseases (LSDs), thereby posing a leading threat to human health. Among such NCDs, Diabetes Mellitus (DM) is an important entity and India leads the world with largest number of diabetics, earning the dubious distinction of the Diabetic Capital of the World. Nevertheless, …
Published in Research and Reviews : A Journal of Ayurvedic Science, Yoga and Naturopathy · Vol. 6, Issue 3, 2019 · pp. 8–21 Read article
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Comparative Effectiveness of Surgical and Nonsurgical Management for Patients with Single Level Lumbar Disc Herniation in terms of Symptom Severity and Quality of Life
Abstract: Background: Sciatica is one of the most severe forms of low back pain, with a lifetime prevalence of approximately 30 percent. Aim: To assess the short-term and long-term efficacy of surgical and conservative care in the incidence of sciatic symptoms and quality of life in standard clinical settings among patients with lumbar disc herniation. Material and Method: It was a retrospective study conducted at the Medical Trust Hospital, Kochi, India. …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 10, Issue 1, 2020 · pp. 25–29 Read article
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Study the Mechanical Properties of Epoxy Resin Reinforced with Metal OxideNanoparticles
Abstract: In this research the additive effect of (Magnesium Oxide (MgO), Zirconium Oxide (ZrO2), Copper Oxide (CuO)) nanoparticles to epoxy resin as a matrix have been studied, in addition tomanufacturing hybrid composites from the same nanoparticles which are (CuO/ZrO2, MgO/ZrO2) to epoxy resin as a matrix too. The hand lay-up method is using to manufacturing the composites from the epoxy resin and the nanoparticles with different weight ratios((0, 3, 6, 9) …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 7–12 Read article