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251 articles for “rotation”
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Review on Main Equations for Measuring Spray Properties in Centrifugal Injectors
Abstract: The method of fuel injection has a significant effect on the stability and proper mixing of fuel and oxidizer, which is done by the injector. In other words, the injector is a device that converts fluid into droplets. The faster and better the particle crushing rate, the faster the fluid particles will evaporate, resulting in higher thermal efficiency and higher thrust force. Therefore, how to inject fuel into the combustion …
Published in Journal of Industrial Safety Engineering · Vol. 8, Issue 3, 2021 · pp. 17–23 Read article
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Dynamic Characteristic of Permanent Magnet Assisted Self Excited Synchronous Reluctance Generator
Abstract: AbstractThe use of self-excited synchronous reluctance generator is gaining interest due to its simplicity and inexpensiveness in terms of manufacturing. The problem of this machine which is best suited in a standalone application is that it has poor power factor. This paper presents a comparative study of a PM assisted synchronous reluctance generator with a regular reluctant generator. The machine was studied using rotor rotating frame and embedded MATLAB was …
Published in Journal of Instrumentation Technology & Innovations · Vol. 10, Issue 1, 2020 · pp. 1–11 Read article
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Experimental Investigation of Flexural Strength and Impact Strength of Friction Stir Welded Ultrahigh Molecular Weight Polyethylene (UHMWPE)
Abstract: Friction stir welding (FSW) is a solid-state process in joining thermoplastic materials. Polymers are engineering materials used for future technological development as the polymer processing and fabrication techniques have developed plastic products and components in major industries. Utilization of ultrahigh molecular weight polyethylene (UHMWPE) material in engineering structures has increased because of its low weight, high specific strength, chemical resistance, design flexibility, corrosion resistance and reduced manufacturing costs. In present …
Published in Journal of Mechatronics and Automation · Vol. 2, Issue 3, 2015 · pp. 8–15 Read article
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Bending Stress Analysis of Involute Helical Gear and Wildhaber-Novikov Gear
Abstract: This paper presents a bending stress analysis for Wildhaber-Novikov circular-arc gear (W-N gear) and involute helical gear. Bending stress analyses performed are under continuous load transmission during rotation using finite element method. Using CATIA V5 R19, three dimensional W-N gear and involute helical gear are modeled by considering same number of teeth, module, helix angle, pressure angle and face width. Then nonlinear contact analysis was conducted on involute helical gear …
Published in Journal of Mechatronics and Automation · Vol. 1, Issue 2, 2014 · pp. 17–21 Read article
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Universal Microcontroller Trainer Board Design for Speed Controlling of BLDC Motor and Text Controlling of Dot-Matrix Display
Abstract: Reduce Instruction Set Computing (RISC) related micro-controlling is taking over modern life little by little. Practicing these phenomena becoming necessary in engineering sectors. In this research, a segmented laboratory-kit has been developed to involve students in controlling Brushless Direct Current (BLDC) Motor and Light Emitting Diode (LED) Dot Matrix Display. This lab kit introduces several features for those two modules. The Rotation Per Minute (RPM) measurement using Infrared (IR) sensor, …
Published in Journal of Microcontroller Engineering and Applications · Vol. 8, Issue 3, 2021 · pp. 6–21 Read article
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Corrosion behavior of Friction stir welded aluminum alloys: A review
Abstract: A review on corrosion behavior of Friction Stir Welded aluminum alloys has been presented. Objective of the work is to discuss the behavior of Friction Stir Welded aluminum alloys under chloride environment. The variation of corrosion potential and corrosion rate for the welded portion and base metal and within the welded region for various zones like weld nugget, HAZ and TMAZ has been studied. Alloys of series 2XXX, 5XXX, 6XXX …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 1, 2019 · pp. 20–26 Read article
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Analysis of Friction Stir Welded Aluminum Alloys 2014 and 8011
Abstract: In this work we investigated friction stir welding of Aluminum Alloy 2014, Aluminum Alloy 8011. The major defects occurring while friction stir welding are tunnel effect, poor tensile strength, uneven material flow. The main causes for these defects are improper selection of welding parameters. The major welding parameters considered in Friction stir welding are spindle rotational speed (rpm), tool travel speed (mm/min) and tool angle (degree).In this work steps are …
Published in Journal of Materials & Metallurgical Engineering · Vol. 5, Issue 1, 2015 · pp. 12–17 Read article
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Optimizating Pitting Corrosion in 3.5 N NaCl Medium of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Using Genetic Algorithm
Abstract: Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current micro plasma arc welding (PCMPAW) was found beneficial due to its advantages over the conventional continuous current process. This paper highlights …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 132–142 Read article
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Establishing Empirical Relationships to Predict Grain Size and Hardness of Pulsed Current Microplasma Arc Welded Inconel 625 Sheets
Abstract: Nickel alloys have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, pulsed current microplasma arc welding was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on developing mathematical models …
Published in Journal of Materials & Metallurgical Engineering · Vol. 1, Issue 1-3, 2011 · pp. 37–47 Read article
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Fabrication of AA5182-Semis for Precise Components
Abstract: Al4.5MgMn alloy is known to show an excellent physical and mechanical properties as well as manufacturing and fabrication ease as semis, suitable for making precise components like hull of the light weight vehicles and seamless tubes. Present work has tried to describe the development of microstructure and texture of an industrial tandem hot rolled Al4.5MgMn alloy sheet after laboratory cold rolling and annealing. Crystallographic orientation dependent strengthening rate has been …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 3, 2021 · pp. 21–32 Read article
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Bearing Defect Diagnosis: An Approach for Manufacturing Industries Using Wavelet Transform Based Features
Abstract: To maintain reliability in the manufacturing units, industries have concentrated their attention on the condition based maintenance. Fault detection and diagnosis are the two of three condition based maintenance mainstays. Bearing is one of the most important and essential components of the rotating machines. Hence, the researchers have shown their interest in bearing fault detection and diagnosis from the last few years. They mainly use bearing vibration as fault characteristics …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 1, 2017 · pp. 15–21 Read article
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Role of GO and rGO on the Structural Properties of PA6/PMMA Blend Nanocomposites
Abstract: To understand and assess the role of Graphene Oxide (GO) and reduced graphene oxide (rGO) in the PA6/PMMA blend, nanocomposites, the PA6/PMMA (50:50 wt%) blend-based nanocomposites were prepare by loading different wt% of GO and rGO (1wt% and 3wt%), through twin screw melt extrusion followed by injection moulding technique. Different compositions of the nanocomposites were prepared using melt mixed method at 2300C by applying a rotational torque 50 N. All …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 1–10 Read article
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Optimization of Drilling Parameters on Hemp-Pineapple Hybrid Natural Fiber Composites
Abstract: Composites are tailor made heterogeneous materials to meet desired mechanical properties for intended applications. Among all the composites, fiber reinforced composites gained wide attention because of ease in synthesis and light weight. Issues such as delamination and surface finish during drilling of composites offers challenges. The present investigation uses design of experimentation method for setting processing parameters such as drill diameter, feed, rotation speed for evaluation of minimum surface roughness …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 33–39 Read article
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Addressing Global Disparities in Prosthetic Mobility: An Experimental Evaluation of Ankle-Foot Orthosis for Sustainable and Efficient Integration with Vehicle Structures and Systems
Abstract: Over the past two decades, the prosthetic foot industry has made significant advancements, greatly enhancing the quality of life for individuals with lower limb amputations in industrialized countries. However, these innovations remain out of reach for many in less developed regions due to high costs, limited durability, maintenance demands, and accessibility challenges. There is an urgent need to develop highly functional, cost-effective, environmentally friendly, and resilient prosthetic feet that can …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 44–52 Read article
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Circuit Topologies, Operation, Control Schemes and Modulation Techniques of Modular Multilevel Inverter
Abstract: The Modular Multilevel Converter (MMC) is one of the developing topology. MMC has several attractive features such as a modular structure, transformer-less operation, easily scalable in terms of voltage and current, low expense for redundancy and fault tolerant operation and excellent output waveforms quality. Due to these attractive features industry and researcher increased the interest in this converter. This interest results in the development of new power topologies, modulation strategies …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 28–40 Read article
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Torque Ripple Reduction in Induction Motor Drive Using Direct Torque Control Technique with Space Vector Modulation
Abstract: Three phase squirrel cage induction motor drives are widely used in industries for variable speed applications. This paper proposes the design and simulation of an induction motor (IM) drive with DTC-SVM (Direct Torque Control–Space Vector Modulation). The IGBT/Diode inverter switches are controlled by the DTC-SVM technique. The synthesis of vector selection table depends on the rotational direction of the stator flux vector. The control algorithm in DTC-SVM methods are based …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 1, 2015 · pp. 33–39 Read article
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Maximum Power Point Tracking of a Variable Speed Permanent Magnet Synchronous Generator Based Wind Energy Conversion System
Abstract: Wind turbines produce maximum power at the optimal tip-speed ratio. Fixed speed wind turbines are inefficient because the turbine blades rotate at a specific mechanical speed irrespective of the prevailing wind speed. The system is therefore, not able to extract the maximum possible amount of power. In this work, a maximum power point tracking scheme for a variable-speed permanent magnet synchronous generator based wind energy conversion system is implemented in …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 35–51 Read article
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Harmonic Estimation and its Compensation using D-STATCOM for a Steel Manufacturing Plant
Abstract: Electrical power system having distorted voltage and current waveform generates harmonics. The compensation of the harmonics is greatly required for better performance of the power system. Harmonic is of major concern for the power system containing electric arc furnace (EAF). Since the nature of the arc is highly non-linear and time varying and therefore harmonic analysis becomes important to know the behavior of the power system. This paper presents the …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 2, 2021 · pp. 27–35 Read article
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Effect on Welding Parameters on FSW of Aluminium Alloys 7075 T6 with Varying Tool Geometry
Abstract: The present study is to investigate effect of tool pin profile over the friction stir welding of aluminium alloys 7075 T6. The welding process is to be conducted on varying the welding process parameters such as tool rotation speed (rpm), welding speed (mm/min) and tool pin profile. In this work, tensile strength tool rpm increase UTS in FSW joint decease up to certain level, including effect tool rpm on weld …
Published in Journal of Production Research & Management · Vol. 7, Issue 3, 2017 · pp. 27–32 Read article
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Different Aspects to Achieve the Hole Quality in Gun Drilling Machining
Abstract: The manufacturing industry is always trying to fulfill the requirement of various industries and developing facilities to manufacture the designed parts. Many applications for various industries demand for deep drill where the ratio of depth of the hole to the diameter is greater than twenty. Gun drilling, B.T.A. drilling and ejector drilling are the three drilling processes to make deep holes. In the gun drilling process the pressurized oil is …
Published in Journal of Production Research & Management · Vol. 6, Issue 1, 2016 · pp. 34–38 Read article