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1972 articles for “investigations” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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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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Theoretical and Experimental Investigation of Non-linear Vibration Response of an IPMC Actuator Subjected to Alternating Electric Potentialf
Abstract: The precise predication of stable and unstable zone for an applied excitation voltage and frequency is of importance in many micromechanical systems utilizing ionic polymer metal composite (IPMC) as the actuator. A linear dynamic model thus will no longer be valid for IPMC actuator having low thickness and thus more flexible. In this article, non-linear vibration characteristics of a silver (Ag) based IPMC actuator is studied under alternating electric potential …
Published in Journal of Mechatronics and Automation · Vol. 1, Issue 1, 2014 · pp. 11–26 Read article
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Investigation of Square Monopole Antenna with Slotted Patch
Abstract: A novel antenna with slotted patch for L-Band applications is presented in this paper. The proposed antenna consists of a square patch with rectangular slot. By slotting of the patch the antenna shows enhancement of gain in allocated band. A rectangular slot in the patch and partial ground plane is used in this antenna to enhance return loss and bandwidth. The simulated results have shown that the designed antenna receives …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 21–25 Read article
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Experimental Investigation of Effect of Laser Process Parameters and Heat Input on Hardened Bead Geometry and Power Density of ASTM Grade 3 Pure Titanium using CW Laser Beam
Abstract: This research paper presents the experimental study of laser process parameters and heat input on hardened bead profile of ASTM Grade 3 commercially pure titanium sheet of 1.5 mm thickness using 2kW CW Nd: YAG laser. The selected two laser process parameters are: (1). Low laser process parameter (LLPP): Laser Power (LP): 600 Watts, Scanning speed (SS): 2000 mm/min, Focused position (FP): -10 mm with heat Input (HI): 180 J/cm …
Published in Journal of Materials & Metallurgical Engineering · Vol. 7, Issue 2, 2017 · pp. 42–52 Read article
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Investigation on pitting corrosion rate of Micro Plasma Arc Welded Titanium (Ti-6Al-4V) alloy sheets in KBr solution using TOPSIS
Abstract: Titanium is having good anti-corrosion properties in both basic and acidic medium. However, when it is subjected to severer heating processing like welding, there is a possibility of corrosion formation at the weld joint. In the present work Pulsed current MPAW is used for joining 0.5 mm thick Titanium (Ti-6Al-4V) alloy sheets. Peak Current, Base Current, Pulse Rate and Pulse Width are considered as input parameters and fusion zone corrosion …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 2, 2019 · pp. 37–53 Read article
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Investigations with Gigabit Passive Optical Network
Abstract: Gigabit Passive Optical Network is one of the emergent technology to compete with high bandwidth requirement of impending subscribers. Accordingly, this manuscript explores the proposed design of the GPON. Numerical simulations have been executed for the non-return to zero and return to zero pattern with and without the Raman Effect over the single mode fiber of 20 km length of transmission. The design’s performance has been evaluated on the basis …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 2, 2017 · pp. 40–45 Read article
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Experimental Testing and Ply Wise Strength 0°-45°-0° Investigation of Multi-orientation Carbon Fiber Specimen by Using FEA and UTM
Abstract: Synthetic composites have higher strength to weight ratio and are extensively used in industrialapplications. Carbon fibers have extensively high tensile strength. Most of the composites haveorthotropic properties and their strength varies as per orientation. Laminar having differentply orientations have different properties and strengths. Hence, to enhance strength of carbonfiber specimen reducing layer wise damage becomes up most important. It is unimaginable toexpect to examine the layer insightful harm of each …
Published in Journal of Nuclear Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 29–37 Read article
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Investigation on the Variation of RMS Charge Radii of Potassium Isotopes Using SKHF Theory
Abstract: Information about the strong nuclear force and Electromagnetic force can be obtained from the nuclear charge radii measurements on a group of nuclei. Recent experimental findings of sudden enhancement of RMS charge radii of Potassium isotopes raised a question about the validity of shell theory of nucleus. This question has been addressed in this article by the inclusion of optimised tensor interaction term in the well tested Skyrme Hartree Fock …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 1–7 Read article
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Review on Investigation of Tailor Welded Blanks of Dissimilar Aluminum-Magnesium Alloys and Hybrid Carbon Composites
Abstract: Reduction in weight, better fuel efficiency and cost effectiveness are the salient attractive features of Aluminum-Magnesium alloys and carbon composite materials. By making use of tailor welded blanks of dis similar materials of different strengths at appropriate locations in automobile outer body, one can achieve these objectives. At the same time, fabrication of these Tailor Welded blanks of Aluminum-Magnesium alloys, next generation carbon composite materials by usual fusion welding processes …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 66–73 Read article
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An Investigation into the VariablesInfluencing the Densification of Spark Plasma Sintered, 40 Weight Percent Ni-Fe Nano Powder
Abstract: The mechanical alloying process that included high-energy ball milling resulted in particle sizes of 25 mm and 80 mm on average for the Ni-Fe alloy that included 40 percent Ni. At room temperature, highenergy planetary ball milling was carried out over timespan ranging from 15 hours to 60 hours. All of the samples were sintered at the same conditions, which included a temperature of 650 degrees Celsius and a pressure …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 29–35 Read article
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Investigation of Mechanical Characteristics of 3D Printed Composite Materials (Poly Ethylene Terephthalate Glycol and Nylon PA6)
Abstract: It has been widely employed in various industries, including the biomedical, manufacturing, aerospace, car, industrial, and building sectors. In order to gather information on various printing temperatures and rates, the composite's goal is to describe the nylon and polyethylene terephthalate glycol (PETG) materials of FDM under loading circumstances (tension, compression, and bending). According to the findings, PETG and nylon both demonstrate a clear tensile and compression asymmetry. Higher printing temperatures …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 77–88 Read article
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Investigation of Mechanical Characteristics of 3D Printed Composite Materials (Polyoxymethylene and Nylon (PA6))
Abstract: Metals and thermosetting polymers are being replaced by 3D printed fiber reinforced composites because of their lightweight construction and mechanical performance. The adoption of 3D printing technology is due to reduced material waste, design freedom, and the ability to construct complicated structures. A technique for additive manufacturing that can create intricately functional parts is fused deposition modeling. The 3D printed nylon fiber reinforced polyoxymethylene samples are fabricated with different proportions …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 53–64 Read article
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Investigation of Mechanical Characteristics of 3D Printed Composite Materials (Thermoplastic Urethane and Nylon (PA6))
Abstract: 3D printing has emerged as a game-changer, progressively replacing conventional metals and thermosetting polymers, primarily due to its capacity to create lightweight structures with impressive mechanical attributes. The technology's advantages, such as minimized material wastage, design adaptability, and the ability to craft intricate structures, have propelled its widespread adoption. Within the realm of additive manufacturing, Fused Deposition Modeling (FDM) stands out as a technique capable of producing intricate functional components. …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 65–76 Read article
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Investigating the Influence of Shock Waves on the Dielectric Characteristics of ZMTC Crystals
Abstract: Zinc mercury thiocyanate (ZMTC) is an organometallicnonlinearly optical (NLO) single crystal that has been grown in an aqueous solution using the SR technique. Novel, non-destructive method is suggested and shown to enhance the electrical properties of crystals through the use of shock waves. A tabletop shock tube, operating at a Mach number of 1.7, generates shock waves that are subsequently loaded into a zinc mercury thiocyanate (ZMTC) crystal. This process, …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 84–98 Read article
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Investigation into mechanical Characterstics of laminated composite materials (PMMA and NYLON) using FDM
Abstract: The widespread embrace of 3D printing technology stems from its capacity to minimize material waste, offer versatile design options, and enable the production of intricate structures. 3D printed polymer composites reinforced with fibers (carbon, glass, nylon etc.) have been extensively used in automobile, marine, aerospace and energetic applications due to their excellent properties. Nylon fiber is light weight, resistance to damage from oil and chemicals, tough, strong and has higher …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 108–121 Read article
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Investigation of FPGA based PWM Control Technique for AC Motors
Abstract: This paper proposes a Random Frequency PWM synchronized for a three phase inverter implemented with use of Field Programmable Gate Array (FPGA) and applied to a 1-hp induction motor drive system for the reduction of harmonics and improvement of fundamental peak voltage. For providing alternating output voltage with a specific magnitude and frequency to industrial applications, three-phase inverter is preferred. The gating signals to the inverter are produced by means …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 2, 2013 · pp. 16–22 Read article
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Performance Investigation on Fault Analysis in Power Transformer using Modified Fuzzy Controller
Abstract: This article presents the fault analysis and differential protection scheme of the three phase Power Transformers (PT). The proposed and designed relay operates mainly during the internal fault condition and it must be insensitive to any fault outside the zone of protection. In this paper, a designed and modified fuzzy logic controller based differential protection schemes have been used to product the system. The external and internal fault condition is …
Published in Journal of Power Electronics and Power Systems · Vol. 12, Issue 2, 2022 · pp. 32–43 Read article
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Numerical Investigation of the Osmatic Flow Impact on the Load Recovery and Early Well Performance
Abstract: The complexity of shale system coupled with the mystery of low fracturing fluid recovery has puzzled many researchers. Field reports from hydraulic fracturing operations performed on shale formation have highlighted the low recovery of the fracturing fluid. The fate of the hydraulic fracturing fluid is still controversial issue. However, literature has attributed the low load recovery to either trapping into the natural or created micro-fracture or imbibition to the matrix. …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 52–64 Read article
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Molecular Investigation of CO2 Solubility and Diffusion in Crude Oil
Abstract: It is important to know solubility and molecular diffusion coefficients of gas under reservoir CO2 Enhanced Oil Recovery. In this paper, a set complete device has been established to measure solubility and molecular diffusion coefficients of gas to improve the empirical formula and chart. Based on the experiment, molecular diffusion coefficients and solubility is evaluated, which provides the fundamental data to CO2 Enhanced Oil Recovery. The solubility vs. pressure linear …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 28–35 Read article
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Experimental Investigation of Process Parameters While Milling of AA8011 Using MCDM/MADM Method-TOPSIS
Abstract: This paper presents in-depth and comprehensive approach for optimizing the machining parameters in milling of wrought alloy AA8011 using a MCDM/MADM method called TOPSIS. The present work is carried out in three phases; in the first phase the orthogonal array L27 design is prepared using Minitab software by considering various milling parameters such as speed, feed and depth of cut at three different levels. In the second phase, milling operations …
Published in Journal of Production Research & Management · Vol. 8, Issue 2, 2018 · pp. 1–7 Read article