2024

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Browsing 2024 by Author "Pandey, Rohit"

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    3D Printing with Polymer Composites Materials,Processes and Applications—A Review
    (Recent Advances in Mechanical Engineering, 2024-05-15) Pandey, Rohit
    One of the most interesting and revolutionary production options currently available is 3D Printing, a rapidly developing technology. In recent years, this technology has attracted a lot of attention and achieved international renown. The focus of study continues to be on technological developments, notably in the field of material science, especially in light of potential future developments. Due to their mass customisation, design freedom, capacity to print complicated 3D structures, and quick prototyping, 3D Printing techniques are used to manufacture innovative multifunctional polymer composites, and structural characteristics. For a wide range of engineering and construction applications, composite or reinforced materials, particularly those in the polymer class, are becoming more and more common. They have scientific uses because of their outstanding physical, chemical, mechanical. This paper discusses the development of 3D printing technologies for matrix composite materials with excellent qualities and their uses in the industries of electronics, aerospace, automotive, and biomedical. An extensive introduction of additive manufacturing (AM) methods highlights fused deposition modelling (FDM), powder-liquid 3D printing (PLP), selective laser sintering (SLS), stereolithography (SLA), digital light processing (DLP), and robocasting. Discussion is held regarding how various filler additives, reinforcing fibres, nanoparticles, and ceramic polymer composites behave during manufacture.
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    A Review on 3D Printing Processes, Materials, Process Parameters and Applications
    (Recent Advances in Mechanical Engineering, 2024-09-07) Pandey, Rohit
    Additive manufacturing’s ability to create highly complex geometric forms has had a huge impact on the world today. The practical use of 3D plastic objects is limited by their anisotropy and poor properties. Adding fillers improves application versatility and performance. The advantages of 3D printing include low labour costs, low cost and ease of editing and modifying drawings. He specialises in additive manufacturing (AM), fused deposition modelling (FDM), powder-liquid 3D printing (PLP), virtual light processing (DLP), stereolithography (SLA), selective laser sintering (SLS) and electron beam melting. Studies have shown that many parameters such as angle, die tip, feed speed, scanning angle, extruder temperature and plate spacing affect the product delivered. Various methods have been proposed to improve these parameters. To choose the best sign for your chosen software, it will be useful to analyse the main features, advantages and disadvantages of the season. Likewise, research in these areas will further improve the performance of 3D printing projects.
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    Design and Analysis of Manual Pallet Stacker by Using FEM Method
    (Proceedings of Third International Conference in Mechanical and Energy Technology, 2024-08-03) Pandey, Rohit
    In this study, we found that the stress of S-460, aluminum alloy, and carbon fiber were 36.7, 36.81, and 36.76 MPa, respectively. The total deformations of S-460, aluminum alloy, carbon fiber, and other materials are 3.02, 8.4, and 2.0 mm. Looking at our various products of all materials, we choose composite material because it is light, heavy, and has very high deformation and stress under 1000 kg load. This is a simple static analysis using a single load step on the angle shown in Fig. 5.2. The bottom of the right pin hole is subjected to a conical high load, while the entire circumference of the left pin hole is limited (welded). The purpose of this question is to introduce ANSYS analysis techniques. This figure shows the length of a right angle. A36 steel with a Poisson's ratio of 0.27 and a Young's modulus of 30E6 psi is used to manufacture the bracket. The problem can be classified as plane stress because the cantilever is confined to the xy plane and is thin in the z direction relative to the length of the x and y sections (1/2 in. thick). A 2D model, nodes, points, and the model that was used to construct it are used to create the mesh. (It is optional to create nodes and points directly in ANSYS.) The stresses of carbon fiber, aluminum alloy, and S-460 were determined to be 36.7, 36.81, and 36.76 MPa, respectively, in this investigation. The total variations of S-460, aluminum alloy, CFRP, and other materials are 3.02, 8.4, and 2.0 mm. View our wide range of products from all materials. I will choose composite materials because they are light and heavy and have very high stress and strain at 1000 kg load. This is a simple static analysis using a single angular load step shown in Figure C.2. A high cone load is applied to the bottom of the right hole and the entire circumference of the left hole is fixed (welded). The purpose of this question is to introduce ANSYS analysis methods. This figure shows the length of a right angle. A36 steel with a Poisson's ratio of 0.27 and a Young's modulus of 30E6 psi is used to manufacture the bracket. The problem can be categorized as plane stress because the cantilever is confined to the xy plane and is longer and thinner in the z direction than the x and y parts (which are each 1/2 in. thick). Nodes, elements, and the model that was used to construct them are used to build 2D models. (It is optional to create nodes and points directly in ANSYS.)
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    Performance exploration of random forest (RF) and naive bayes (NB) classifiers in identification of phishing attacks
    (Taylor & Francis, 2024) Pandey, Rohit
    With the expansion of the web, more and more programs are being hosted online and accessible in this way. Because of this change, a hacker has begun targeting computers using phishing websites. To identify a phishing attempt, many methods have been offered. However, more work has to be done to counteract this phishing risk. The purpose of this research is to examine and assess the machine learning approach’s performance in classifying phishing attacks. In order to detect phishing attempts inside the web site applications, this work used a heuristic strategy using machine learning classifier. This research evaluates three different machine learning classifiers for their ability to detect phishing scams, contrasting them with random forest (RF) and Naive bayes (NB). It shows that Random forest can successfully detect phishing assaults with a true positive rate of 96.65% by making use of characteristics unique to each website. Based on the outcomes, it seems to be a reliable classifier for identifying phishing scams.
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    Thermal and Frequency Response Analysis on Friction Stir Welding Tool with Different Materials by Using FEA Method
    (Journal of Welding and Joining, 2024-06-18) Pandey, Rohit
    Friction stir welding (FSW) is a solid-state joining technique that joins two facing workpieces without melting the workpiece material. It makes use of a deceased item. The region surrounding the FSW tool softens due to heat produced by friction between the revolving tool and the workpiece material. We are now working on specialised applications (lap and butt welding) while concentrating on test sorts. In addition to being faster than the state of the art, both provide lap welds that are 190% of the plate thickness, improve weld honesty, and lessen upper plate decline. Friction stir welding, or FSW for short, is a popular solid state joining method for soft materials like aluminium alloys. For stronger alloys like steel and titanium alloys, the FSW process's economic sustainability hinges on the creation of long-lasting, moderately cost equipment that reliably yields welds with outstanding structural integrity. The performance of the tool, weld quality, and cost are all impacted by material design and choice. This research reviews and critically examines many key FSW tool components, including process economics, geometry and load bearing capacity, frequency response analysis, tool degradation mechanisms, and tool material selection. The Finite Element Method (FEM) approach is used to characterise the process and provide a more comprehensive knowledge of the thermal effects and thermal inaccuracies on the tool materials.
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    Thermal and Frequency Response Analysis on Friction Stir Welding Tool with Different Materials by Using FEA Method
    (Journal of Welding and Joining, 2024-07-02) Pandey, Rohit
    Friction stir welding (FSW) is a solid-state joining technique that joins two facing workpieces without melting the workpiece material. It makes use of a deceased item. The region surrounding the FSW tool softens due to heat produced by friction between the revolving tool and the workpiece material. We are now working on specialised applications (lap and butt welding) while concentrating on test sorts. In addition to being faster than the state of the art, both provide lap welds that are 190% of the plate thickness, improve weld honesty, and lessen upper plate decline. Friction stir welding, or FSW for short, is a popular solid state joining method for soft materials like aluminium alloys. For stronger alloys like steel and titanium alloys, the FSW process's economic sustainability hinges on the creation of long-lasting, moderately cost equipment that reliably yields welds with outstanding structural integrity. The performance of the tool, weld quality, and cost are all impacted by material design and choice. This research reviews and critically examines many key FSW tool components, including process economics, geometry and load bearing capacity, frequency response analysis, tool degradation mechanisms, and tool material selection. The Finite Element Method (FEM) approach is used to characterise the process and provide a more comprehensive knowledge of the thermal effects and thermal inaccuracies on the tool materials.