Search results for “Point”

Published Subscription 5 Apr 2019

Potential of Midrib of Cocos nucifera Leaf for Reinforcement of Plastics

By Neeraj Dubey, Geeta Agnihotri

Abstract: AbstractCoconut palm (Cocos nucifera) is an abundant crop of tropical areas. In the present work, mechanical properties of midrib of coconut palm leaf as tensile strength, tensile modulus, flexural strength, flexural modulus impact strength and elongation at break is experimentally determined and compared with other fibers. Single-fiber pull-out test is conducted to determine critical embedded length and interfacial adhesion between fiber and matrix for reinforcement in polyester resin. Tensile test …

Published in Journal of Polymer & Composites · Vol. 3, Issue 1, 2015 · pp. 25–32 Read article

Published Subscription 6 Apr 2019

Flexural Characterization of Sandwich Composites; Effect of Varying PU Foam Density and E-Glass Fabric on Flexural Strength

By Manujesh B. J, R. Vijayalakshmi Rao, Prajna M. R.

Abstract: AbstractThis paper presents the results of an extensive investigation on flexural behavior and failure mechanisms of sandwich composites with polyurethane (PU) foam core and glass reinforced vinylester as facesheet. The sandwich structures with PU foam of varied density and glass fibres of different architecture are tested under three point bending. The experimental values of face bending strength (FBS) and core shear stress (CSS) are evaluated. Effect of core density and …

Published in Journal of Polymer & Composites · Vol. 2, Issue 2, 2023 · pp. 29–43 Read article

Published Subscription 20 Apr 2020

Optical, Thermal Properties of Cadmium Chloride Reinforced PVA:PVP Blend Films

By R. S. Mahmood, S. A. Salman, N. A. Bakr

Abstract: In this study, pure polymer blend film (PVA:PVP) and salt (CdCl2.H2O) reinforced polymer blend films were prepared at different weight ratios (10, 20, 30) wt% using the casting method. The optical and thermal properties of all polymer blend films were studied.The transmittance and absorbance spectra were recorded within the wavelength range (190-1100) nm. The effect of salt weight ratio on the energy gap of salt (CdCl2.H2O) reinforced polymer blend films …

Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 46–52 Read article

Published Subscription 26 Feb 2021

Study the Mechanical Properties of Epoxy Resin Reinforced with Metal OxideNanoparticles

By sabah anwer salman

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

Published Subscription 27 Jun 2023

Estimation of Mechanical Properties of Kevlar/Basalt Intrawoven Composite Laminates Containing Nanoparticles

By J. Jensin Joshua, Dalbir Singh, Ramesh C

Abstract: Purpose: The research describes estimation of various Mechanical properties like compression, tensile, shear and impact strength of Kevlar/Basalt (KB) Intrawoven 1×1 composite laminates, each comprising 1%, 3% and 5% of Al2O3 (Aluminium oxide) nanoparticles. Design/methodology/approach: These are woven with the help of manual handloom weaving machine, compression moulding technique was adopted for the fabrication of hybrid composite laminates. Attempts have been made to analyse the mechanical properties of Kevlar/Basalt intrawoven …

Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 1–12 Read article

Published Subscription 18 Dec 2023

Investigation of Mechanical Characteristics of 3D Printed Composite Materials (Poly Ethylene Terephthalate Glycol and Nylon PA6)

By J. Sowmya, J. Suresh Kumar, J. Sunil Kumar

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

Published Subscription 6 Apr 2018

Supercapacitor-Battery Hybridization to Prevent Battery Life for Pulsed Load Applications

By Sachin Rajani, Vivek J Pandya, Chirag K Vibhakar, Alpesh S Adeshara

Abstract: Management of power in the pulsed load applications has become a significant issue when it comes to the battery backup systems. For the pulsed load applications, deep discharge of the battery and battery health problems are very well known. In this paper, an attempt is made to overcome these key challenges by connecting a high power density device, ultracapacitor (super capacitor) in parallel with the battery. The role of ultracapacitor …

Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 1–15 Read article

Published Subscription 12 Apr 2019

The Frequency and Transient Analyses of a High Voltage Bushing/Transformer Cascade

By Mohamed Mostafa Saied

Abstract: This paper investigates the frequency characteristics and electromagnetic transients of a typical system composed of a high voltage bushing and a power transformer connected in cascade. Detailed distributed-parameter Laplace-domain models are adopted for the digital simulations. These parameters include, among others, the transformer winding’s series inductance, its capacitance to ground and the inter-turn capacitances. Moreover, the number, the geometrical data of the capacitively-graded bushing’s conducting foils and the dielectric insulating …

Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 42–53 Read article

Published Subscription 12 Apr 2019

A Contribution to the Frequency and Transient Analysis of High Voltage Bushings

By Mohamed Mostafa Saied

Abstract: The paper suggests a method for determining the frequency characteristics and transient response of capacitively graded high voltage bushings. It is based on an s-domain circuit model that describes the grading conducting foils and the insulating layers. In most cases, they are of different axial lengths. A system of simultaneous differential and algebraic equations is derived taking these differences into account. Its closed-form solution, subject to the boundary conditions, can …

Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 15–26 Read article

Published Subscription 10 Dec 2018

PV-Wind-Battery based Isolated Grid Connected System

By Lakshmi G. Nair, Abhilash T Vijayan

Abstract: Photovoltaic (PV)-wind-battery based multi-input isolated bidirectional converter for grid connected system is presented. The proposed system aims to satisfy the load requirements, manage the power flow from multiple sources and charge the battery by the excess power supplied by the renewable energy sources. A bidirectional buck-boost converter is used to harness power from PV along with the battery, while an isolated boost half-bridge converter is used to harness power from …

Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 57–63 Read article

Published Subscription 10 Dec 2018

High Gain High Efficiency Single Switch DC–DC Converter for Green Power Source Conversion

By Sinimol Salim, Peter K. Abraham

Abstract: Efficiency of solar cell is very low and it is preferred to be operated at low voltages; so it is difficult to supply power to a certain load. Conventional boost converter offers limited gain. So a high voltage boosting is needed. Proposed converter consists of coupled inductor and switched capacitor technique to achieve high gain without high duty ratio and turns ratio. In the magnetic field of coupled inductor and …

Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 46–56 Read article

Published Subscription 15 Feb 2019

Closed Loop Control of Multi Level Inverter Tied with 415 V AC Source Using SV-PWM for Renewable Energy

By Parth Joshi, Chetan Sheth

Abstract: In this work, 415 V AC source is interfaced with three-level diode clamped inverter in which renewable energy source is used as a DC source, solar energy is used which is most popular renewable energy source. The obtained DC from the solar irradiation is fed to MPPT (Maximum Power Point Tracking) to utilize voltage at maximum power (DC). The perturb and observe technique is used in this work to track …

Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 55–65 Read article

Published Subscription 15 Feb 2019

Photovoltaic Solar Farms Operating in VAR Mode: A Review

By Niraj Solanki, Jatin kumar Patel

Abstract: The PV solar inverter plays a vital role in solar farms for electrical power generation at distribution end. By generating active power, such at lower distributed end results like voltage rise issues and voltage fluctuations which affect power quality standards. Increasing penetration level of distributed generation sources connected to the power system cause increasing reverse power flow when demand is not adequate, which raises the voltage level at point of …

Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 73–85 Read article

Published Subscription 19 Jul 2019

Performance Evaluation of Active Power Filter for Aircraft System

By Saifullah Khalid

Abstract: Sinusoidal current control approach for extracting reference currents for shunt lively energy filters were modified using genetic algorithm and its performances had been compared. The acute evaluation of comparison of the repayment functionality based on THD and speedwell be finished, and pointers may be given for the selection of method for use. The simulated effects the usage of MATLAB version are shown, and they will undoubtedly prove the significance of …

Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 1–8 Read article

Published Subscription 16 Aug 2019

A New Approach for Optimal Rating and Location of Substations

By daljit singh, yog raj sood

Abstract: This paper is based upon the software developed using genetic algorithm for optimal location of Sub-station regarding its place and size. Developed method is applied on practical network and the results obtained. In this paper an attempt has been made to solve the problem of the distribution network and developing an appropriate plan to trace the optimal location for placing new substation. A GA program has been developed and implemented …

Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 2, 2013 · pp. 1–7 Read article