Search
1978 articles for “Al 7075 + 7.5%SiC” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
Nothing matched all of your words, so these match any of them.
-
Effect of Shock Waves on the Hardness of Graphene Reinforced Aluminium Composites
Abstract: The advantageous properties of Aluminium metal components have proved their suitability in the field of aerospace industry, naval, sports, and other structural applications. Its disadvantages like high wear rate, less hardness limits its application for some special applications. Graphene is an allotropic form of carbon which exhibits high tensile strength, better co-efficient of friction and an easily derivable material from the carbon which is abundantly available in nature. Reinforcement of …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 32–38 Read article
-
Synthesis of Copper Nanoparticles using Alternanthera Sessilis Linn Leaf Aqueous Extract and their Characterization
Abstract: The current study describes the biogenesis of Cu NPs using an aqueous extract of the leaf of Alternanthera sessilisLinn. (A.S). recently, biological synthesis of nanoparticles has gained popularity due to the fact that it is eco-friendly, simple, cost-effective, non-hazardous, and extreme conditions. The aqueous extract of Alternanthera sessilisleaf contains enoughterpenoids, carbohydrates, and flavonoids to convert metal ions into metal and thus stabilize the resulting nanoparticles. The UV-visible spectrophotometer confirmed the …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 14–28 Read article
-
Application of Dynamic Phasor Model as an Alternative to DFT in Phasor Measurement
Abstract: This paper presents the application of dynamic phasor based models as an alternative to the Discrete Fourier Transform (DFT) commonly used in the Phasor Measurement Units (PMU). The paper demonstrates that the computation of a phasor using DFT in discrete time domain is equivalent to the computation of phasor (Dynamic Phasor) in continuous time domain. This paper proposes the application of dynamic phasor based models to simulate a Wide Area …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 46–52 Read article
-
Design of Active Power Based Relay Algorithm to Overcome Transient Instability: 220 kV Amravati Substation Case Study
Abstract: This paper presents a new protective scheme, i.e. new relay algorithm to protect small scale generators against transient instability. The demand of installing small generators in distribution networks has been increased now-a-days. Small scale generators have low inertia constant. The inertia constant minimizes the frequency deviation which depends on the kinetic energy. Therefore frequency dynamics becomes slower and hence it increases the response time to react to fault events. Due …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 64–73 Read article
-
Effect of Number of Sheets on the Performance of Bullet Proof Jackets
Abstract: In the present work effect of number of sheet for the same sheet thickness is conducted. Steel and aluminium alloy are used as a sheet material. The study is conducted using a finite element software ANSYS. Student version is used for the present work. Dimension of the sheet and bullet are taken from the literature. Parameter like velocity is also taken from the literature and value considered in the present …
Published in Journal of Production Research & Management · Vol. 8, Issue 2, 2018 · pp. 14–19 Read article
-
Effect of Welding Parameters on Microstructure and Mechanical Properties of Friction Stir Welded AA6061-T6 Joints
Abstract: Friction stir welding is a solid state joining process capable of joining similar and dissimilar materials, initially developed for joining of aluminium alloys. In the present work, the effect of friction stir welding parameters on the microstructure and mechanical properties of aluminium joints is studied. An attempt has been made to investigate the weldability of Al6061-T6 alloy using high speed steel tool in friction stir welding machine. Dye penetration test …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 10–16 Read article
-
Energy Efficiency Issues and D2D Technique in 5G Network
Abstract: AbstractThis paper includes the survey of need and issues/challenges faced for energy efficiency in 5G network and D2D technique to improve energy efficiency without compromising the user experience. Improving the energy efficiency is important part while designing a network. Energy efficient communication is required for energy constrained networks such as ad-hoc networks in which battery powered wireless system need to reduce energy usage. Cellular systems need to be energy efficient, …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 7, Issue 2, 2020 · pp. 1–6 Read article
-
Traffic Congestion Detection among Manual and Autonomous Vehicles using AHP Algorithm
Abstract: Autonomous vehicles (AVs) are the newest intelligent transportation system (ITS) solutions that can move without human intervention. These goodscontinue their trajectory with a variety of sensors comprising various components. Utilizing these technologies effectively within the logistics businessmight generate a competitive advantage. There are numerous AVs on the market today, with some being superior to others in terms of build quality, range of functions, and design. Choosing an efficient, optimal, and …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 9, Issue 3, 2022 · pp. 8–15 Read article
-
Potable Water Quality Analysis of Akbarpura, KPK, Pakistan
Abstract: In Pakistan, supply of safe drinking water of international standard is very limited. Only around 30% population has access to piped drinking water, which has rarely been completely tested for health safety. About 70% population is drinking water of unknown quality. The only testing comes through human consumption and getting sick. This study is designed to investigate the water quality problems of Akbarpura, Khyber Pukhtunkhwa. Samples were collected from the …
Published in Recent Trends in Civil Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 19–27 Read article
-
Review on Free Piston Linear Alternator
Abstract: This study presents the development methodology of the Free-Piston Linear Alternator/Generator (FPLG). The FPLG is a free-piston combustion engine with an integrated linear generator. The engine can be used as a range-extending device in an electric vehicle. Unlike conventional internal combustion engines, a free-piston linear engine has no a crankshaft, and thus the pistons move freely in the cylinder. This allows a free-piston linear engine to easily adjust the compression …
Published in Trends in Electrical Engineering · Vol. 8, Issue 3, 2018 · pp. 8–18 Read article
-
Optimal Location of IPFC based on Installation Cost in a Power System Network using ABC Algorithm
Abstract: This paper presents a methodology for locating the optimal position of Interline Power Flow Controller (IPFC) in a power system network based on installation cost. The proposed methodology uses both conventional and non conventional optimization tools such as LR and ABC, respectively. This methodology is formulated mathematically based on installation cost of the FACTS device and generation cost of the real power. IPFC is modeled using Power Injection (PI) model …
Published in Trends in Electrical Engineering · Vol. 2, Issue 1-2-3, 2012 · pp. 11–30 Read article
-
Optimal Allocation of FACTS Devices Using Quantum Inspired Evolutionary Programming
Abstract: Quantum Inspired Evolutionary Programming (QIEP) is an optimization technique that combines the benefits of quantum computing and evolutionary algorithms together. In this paper this technique is used to find optimal allocation of Flexible AC Transmission System (FACTS) devices. The results are compared with the results found from genetic algorithms (GAs). Based on the results it can be concluded that QIEP technique is better than GAs. Keywords: QIEP, quantum computing, evolutionary …
Published in Trends in Electrical Engineering · Vol. 5, Issue 1, 2015 · pp. 23–27 Read article
-
A Study on Economic Dispatch Solution with Environmental Issue Using Genetic Algorithm
Abstract: This paper attempts to solve the problem of economic load dispatch (ELD) keeping in view the environmental issue of ever increasing pollution which leads to the various health issues. It is important to check and control the emission as well. Besides the classical ELD constraints, valve point loading effect and emission constraints are also considered and generators are scheduled for the most optimum solution. The researcher attempts to study the …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 10–16 Read article
-
Digital Signature Verification Based on Biogamal, SHA and Elgamal Algorithms
Abstract: Nowadays, in our day-to-day life online services are playing a very crucial role. Online services also have some certain security challenges in communication network. Security aspects consists of confidentiality of data/information, authentication of users and integrity of data. To achieve all these parameters, the information must be digitally signed by the original sender and verified by the intended recipient. Thus, research digital signatures should be further developed to improve the …
Published in Trends in Machine design · Vol. 7, Issue 3, 2020 · pp. 17 21 Read article
-
Investigation of the Control Parameters in the Machining of Inconel 718 with a carbide tool using Taguchi methodology
Abstract: The main objective of proposed work is to determine the influence of controllable parameters on machining characteristics of Inconel-718 and to achieve the optimum parameters for efficient milling. The Taguchi methodology is adopted for the design of experiments and process optimization. The paper gives an understanding of the different controllable cutting parameters such as cutting velocity, feed rate and depth of cut. It discusses about the carbide tool being used …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 73–76 Read article
-
Effects of Variation of Active Region Radius on the Performance Characteristics of a Designed 1550 nm Al0.09Ga0.38In0.53As/InP MQW VCSEL
Abstract: AbstractIn this work, the performance characteristics of a designed Al0.09Ga0.38In0.53As/InP based 1550 nm top emitting multi quantum well (MQW) vertical cavity surface emitting laser (VCSEL) has been obtained. By evaluating the attained result of different parameters of selected MQW VCSEL the peak material gain is obtained as 1652.3 cm-1. For 6.1 mA of injection current and 5.65 µm of active region radius, the optical output power of 31.37 dBm and …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 3, 2014 · pp. 8–13 Read article
-
A New Effective MUSIC Algorithm for Direction of Arrival Estimation and Combining It with Beam Forming in Smart Antenna Systems
Abstract: ABSTRACT Smart antenna is now commonly used in communication systems due to its high advantages. Two important functions in smart antenna are direction of arrival estimation and beam forming. The main aim of direction of arrival estimation in smart antenna is to estimate the direction of the signal and based on this angle the beam forming will identify the exact position and phase angle of the antenna. Here we proposed …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 2, 2012 · pp. 1–6 Read article
-
Direction of Arrival Estimation in Mobile Communication Systems using MUSIC Algorithm
Abstract: AbstractAdaptive antenna arrays use multiple antenna elements to form directional patterns in order to improve the performance of wireless communication systems. The antenna arrays also have the ability to estimate the Direction-of-Arrival (DoA) of the signals received from the desired transmitters as well as the directions of interference signals. The results of DoA estimation are then used to adjust the weights of the adaptive Multi-Input Multi-Output (MIMO) antenna so that …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 2, 2013 · pp. 20–27 Read article
-
Optimized Companding Technique using Firefly Algorithm for PAPR Reduction in OFDM System
Abstract: AbstractThe current trends in wireless industry are based on multi-carrier transmission technique such as Orthogonal Frequency Division Multiplexing (OFDM) which provides high data rates and is highly immune to frequency selective fading. However, OFDM is handicapped with a major problem of high peak-to-average power ratio (PAPR), which gives rise to non-linear distortion, inter-symbol interference and out-of-band radiation. Several PAPR reduction techniques have been devised over the last few decades in …
Published in Journal of Communication Engineering & Systems · Vol. 5, Issue 2, 2015 · pp. 8–14 Read article
-
An Energy Efficient Routing Algorithm for FiWi Access Network
Abstract: AbstractFiber wireless access network is a promising access network due to the provision of higher bandwidth, flexibility, and ubiquity. One of the main challenges for a FiWi access network is to minimize energy consumption. In this network, there are many concerns like ONU placement, ONU sleep mechanisms, power saving mechanisms, etc., which are accountable for achieving energy efficiency. Routing is another aspect at the front end of the network, which …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 2, 2017 · pp. 1–13 Read article