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70 articles for “forming defects”
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Effect of Geometry, Material and Blank Holder Force on Formability of BIW parts
Abstract: The major constituent of any car body consists of about 400 sheet metal stamped parts. Geometry and material of these parts is not uniform. In order to design these parts for any car, it is essential to know how these parts are manufactured. During our study of the manufacturing processes of these parts, we found that the part designs are repeatedly sent back to the body design team for change …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 1, 2015 · pp. 29–37 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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Design and Validation of an Artificial Intelligence-Driven Digital Twin for Real-Time Monitoring and Control in Polymer Composite Manufacturing
Abstract: Polymer Matrix Composites (PMCs) have become indispensable in high-performance sectors such as aerospace and automotive engineering, offering exceptional strength-to-weight ratios that outperform traditional metals in many demanding applications. However, the reliability of manufacturing PMCs via Vacuum-Assisted Resin Transfer Molding (VARTM) is frequently undermined by stochastic process variabilities. Unpredictable fluctuations in thermal history, preform permeability, resin rheology, and ambient conditions often lead to some defects; namely voids, dry spots, and incomplete …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 224–233 Read article
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Revealing the Effect of Swift Carbon Ion Beam on Radiation Sensitivity of Radio-frequency Magnetron Sputtered Grown Alumina Thin Films
Abstract: Regarding targeted treatment, hadron therapy is beneficial than conventional radiotherapy based on X rays/gamma rays due to characteristic energy loss profile of energetic charged particle during ion matter interaction. In this regard, dose monitoring and its precise measurement with spatial accuracy are very crucial. Thermoluminescence (TL) based thin film radiation dosimeter has the potential to serve this purpose. In hadron therapy, use of swift carbon ion beam is found to …
Published in Journal of Polymer & Composites · Vol. 11, Issue 7, 2023 · pp. 23–29 Read article
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Innovative Approaches in Bioinspired and Biomimetic Membrane Technologies: Bridging Nature and Engineering
Abstract: Bioinspired and biomimetic membranes represent a ground breaking advancement in membrane technology, offering innovative solutions to critical global challenges in water purification, chemical separation, and energy conversion. These membranes leverage the exceptional transport properties of biological systems, particularly through the incorporation of aquaporin proteins, which facilitate rapid and selective water transport. This review synthesises recent developments in aquaporin-based membranes, highlighting their remarkable efficiency in desalination processes, where they serve as …
Published in International Journal of Membranes · Vol. 1, Issue 2, 2024 · pp. 53–60 Read article
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Experimental Investigation of Aluminum Alloy 8010 by Friction Stir Welding
Abstract: A solid state welding method called friction stir welding (FSW) is used to fuse metals and alloys that are challenging to fuse using traditional fusion welding. The effects of tool pin and shoulder diameter on joining the aluminum alloy Al 8010 were examined in this study. The basis material for combining single butt-welded joints is a plate with a thickness of 6 mm. The welding was carried out on the …
Published in Journal of Materials & Metallurgical Engineering · Vol. 14, Issue 3, 2024 · pp. 14–19 Read article
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A review on micro hot embossed Fresnel lenses
Abstract: Background: Micro replication techniques like HE allows for the large-scale manufacturing of the micro components which use polymers like Polymethyle methacrylate, Polycarbonate, polystyrene as the work material. In the hot embossing process, key parameters include applied pressure, temperature during heating, duration of embossing, and temperature during demolding. Research Objectives: Developing straightforward and affordable methods to produce the micro featured molds needed for the hot embossing is a significant research goal. …
Published in Journal of Polymer & Composites · Vol. 12, Issue 8, 2024 · pp. 12–28 Read article
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Effect of Tool Tilt on Formation of Tunnel in Friction Stir Welded 5083 Joints: An Experimental Study
Abstract: Friction stir welding (FSW) being a solid-state joining process is immune to the various defects faced in traditional fusion welding process. However, defects such as voids, joint line remnants and tunnel defects are common imperfections in FSW. In the present study, an attempt has been made to investigate the effect of tool tilt on the formation of tunnel defect, while keeping all other process parameters constant. Tool tilt is a …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 2, 2014 · pp. 10–15 Read article
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Crystal Defects and Their Characterization in Modern Materials Science
Abstract: The physical and chemical properties of crystalline solids are fundamentally dictated by deviations from structural perfection, known as crystal defects. From the point-scale vacancies that drive diffusion to the planar boundaries that determine mechanical strength, defects serve as the primary "tuning knobs" in material design. This review provides a comprehensive examination of point, line, and planar defects, exploring their formation energetics and their role in plastic deformation via crystallographic slip. …
Published in International Journal of Crystalline Materials · Vol. 3, Issue 1, 2026 · pp. 15–19 Read article
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Role of Autologous Bone Suspension in Scalp Electric Burns
Abstract: Performing bone grafts is a complex and intricate procedure that demands a high level of skill to ensure successful outcomes. The reconstruction of calvarial defects poses a formidable challenge, primarily attributed to factors such as widespread infection, the compromised health condition of the patient, and the presence of comorbidities. Over the years, various approaches and techniques have been explored and documented in an effort to address the closure of defects …
Published in Research and Reviews : Journal of Surgery · Vol. 12, Issue 3, 2023 · pp. 20–25 Read article
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An Experimental Study on Multi-Criteria Parameters Optimization of Process for Al6351/SiC/Gr Metal Matrix Composites Using AHP-TOPSIS Approach
Abstract: This research focuses on optimizing the process parameters of Wire Electrical Discharge Machining (WEDM) for a hybrid Metal Matrix Composite (MMC) comprising Al6351 aluminum alloy reinforced with 4% SiC and 6% graphite (Gr), fabricated via squeeze casting. This technique enables the formation of dense, defect-free composites with uniform reinforcement distribution, enhancing both mechanical properties and structural integrity. Microstructural characterization using Scanning Electron Microscopy (SEM) confirmed the even dispersion and bonding …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 303–319 Read article
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Effect of Fiber Weight Fraction on the Mechanical Performance of Calotropis Gigantea Fiber-Reinforced Polyester Composites
Abstract: Natural fiber-reinforced composites have attracted more attention as environmentally friendly substitutes to synthetic materials since the move towards a sustainable approach to engineering materials has gained in popularity. This paper focuses on the potential use of Calotropis gigantea (CG) stem fibers as laminate reinforcement with bio-composites made through an unsaturated polyester resin (GP) system. Super strength fibers were pulled out, treated with alkaline to boost interfacial adhesion, and positioned in …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 339–349 Read article
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Corn Husk Fiber–Reinforced PLA Biocomposites: Mechanical, Thermal, and Biodegradation Performance
Abstract: The increasing environmental burden caused by conventional petroleum-based plastics has driven significant interest in the development of sustainable polymer composites reinforced with renewable natural fibers. In the present work, corn husk fiber (CHF), an agricultural waste by-product, was utilized as a reinforcing phase in a polylactic acid (PLA) matrix to fabricate eco-friendly biocomposites. Composite samples with varying fiber loadings (0–40 wt.%) were produced through twin-screw melt blending followed by compression …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 312–327 Read article
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A Basic Framework for Evaluation of Rural Road Network Conditions
Abstract: Evaluation of rural road condition has been extensively used as an effective means to support decision-making on investment and management of rural road in both developed and developing countries. Distresses in the form of surface defects, cracks, deformation, disintegration, are common on rural roads. Rural roads must be maintained to provide safe, efficient fast and economic vehicle operations. Evaluation of conditions is recognized as essential requirements for effective maintenance management …
Published in Trends in Transport Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 17–22 Read article
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Prevalence of Dental Fluorosis in Area of Yemen with Above Optimal Level of Fluoride in Drinking Water: An Exploratory Survey
Abstract: Dental Fluorosis is a developmental defect in enamel formation. It is caused by excessive fluoride intake while teeth are developing; during this period (before teeth erupt) dental tissue is very sensitive to fluoride, typically during a child’s first eight years. The aim of this study is to provide the community with sufficient knowledge about the problem and suggest solutions for prevention from it in future. This study was conducted from …
Published in Research and Reviews: A Journal of Dentistry · Vol. 6, Issue 2, 2015 · pp. 15–25 Read article
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Comparative Evaluation of Autologous T-PRF Versus L-PRF Along with Freeze-dried Bone Allograft in the Management of Intra-bony Osseous Defect—A Report of Two Cases
Abstract: Periodontitis is a multifactorial inflammatory disease, characterized by formation of osseous deformities. Periodontal bone loss that presents with a vertical defect, is also known as an intra-bony defect. Different types of bone grafts may be employed to restore the compromised attachment structure. Freeze-dried bone allograft is a type of allograft which is osteoconductive in nature and acts as a scaffold. Platelet concentrates are biological products, filled with growth factors leading …
Published in Research and Reviews: A Journal of Dentistry · Vol. 14, Issue 2, 2023 · pp. 12–16 Read article
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Flaws and Defects in Crystals
Abstract: Crystalline materials are defined by their long-range atomic order; however, no real crystal is completely free from imperfections. This article provides a comprehensive overview of the various types of crystal defects and imperfections that occur in solid materials and their significant influence on material properties. Point defects, including vacancies, interstitials, and substitutional atoms, are examined alongside line defects such as edge and screw dislocations, as well as planar defects encompassing …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 1–15 Read article
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Optimization of Stellite Defect in Manufacturing of Engine Valves: A Review
Abstract: Intake and exhaust valves are the important components of an engine valves which are used to control flow and replacement of fuel gases inside the cylinder. This work mainly deals with defect known as stellite defect in different sizes of engine valves; and methodology adopted to prevent valve from stellite defect. Valve base material is low alloy steel (AISI 4140) and upper surface of engine valve is generally hard faced …
Published in Journal of Automobile Engineering and Applications · Vol. 3, Issue 1, 2016 · pp. 1–4 Read article
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A Compact Umbrella Shaped Patch Antenna using DGS for Dual/Triple/Quad Band Applications
Abstract: In this paper, a compact Umbrella shaped microstrip patch antenna for Quad band applications specially for X band, Ku band and K band applications is presented. The antenna is simulated using the Ansys soft HFSS simulator. The size of the antenna is 25 mm×25 mm ×1 mm and printed on an FR4 substrate. Defected ground structure in the form of concentric circular rings is used to increase the bandwidth of …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 36–44 Read article
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Green Manufacturing with Steel Swarf
Abstract: The industrial sector drives nearly one-third of global energy demand, with most of this energy used to produce bulk materials. However, the rate of recycling of metallic materials is much higher than non metallic ones, especially when the scrap is heavy. But in very loose swarfs the transformation rates are poor, and processes are unsustainable. To improve the life productivity of bulk materials, and also lower the specific energy consumption, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 3, 2014 · pp. 21–31 Read article