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Effect Of Wire Diameter, Feeding Rate, Pulse (On/Off) Time On Surface Roughness And Metal Removal Rate For Cr-Mo Steel (Scm425h) During Wire Electrical Discharge Machine (Wedm) Cutting Operation, Saad Shather, Sami Hammood, Noor Al-Huda Hussain, Noor Hasson Hasson Aug 2026

Effect Of Wire Diameter, Feeding Rate, Pulse (On/Off) Time On Surface Roughness And Metal Removal Rate For Cr-Mo Steel (Scm425h) During Wire Electrical Discharge Machine (Wedm) Cutting Operation, Saad Shather, Sami Hammood, Noor Al-Huda Hussain, Noor Hasson Hasson

Engineering and Technology Journal

Increase the demand to produce complex shapes with high quality and dimensional accuracy such as production aerospace, cars, die sinking has been leading to increase the demand to use the non- traditional cutting operations such as wire electro-discharge machine (WEDM) rather than using the traditional operations. An idea to understand the effect of wire diameter, wire feed, pulsing (on/off) time on surface roughness, and metal removal rate of Cr-Mo steel during wire electrical discharge machining was investigated. Two Steel alloy samples with dimensions of (60 x50 x 20)mm were cut into four rectangular spaces with (5x10x20)mm at one side of …

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An Efficient Approach For Detecting And Classifying Moving Vehicles In A Video Based Monitoring System, Sajidah Mahmood, Laith Saud Aug 2026

An Efficient Approach For Detecting And Classifying Moving Vehicles In A Video Based Monitoring System, Sajidah Mahmood, Laith Saud

Engineering and Technology Journal

Moving objects detection, type recognition, and traffic analysis in video-based surveillance systems is an active area of research which has many applications in road traffic monitoring. This paper is on using classical approaches of image processing to develop an efficient algorithm for computer vision based on traffic surveillance system that can detect and classify moving vehicles, besides serving some other traffic analysis issues like finding vehicles speed and heading, tracking specified vehicles, and finding traffic load. The algorithm is designed to be flexible for modification to fulfill the changes in design objectives, having limited computation time, giving good accuracy, and …

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Studying Wear Behavior Of Ni-Ti- Ag Shape Memory Alloy Synthesized By P/T, Suad Shihab, Khansaa Salman, Laith Saud Aug 2026

Studying Wear Behavior Of Ni-Ti- Ag Shape Memory Alloy Synthesized By P/T, Suad Shihab, Khansaa Salman, Laith Saud

Engineering and Technology Journal

Because of the unique properties, Ni-Ti based shape memory alloys (SMAs) are increasingly attractive for a wide variety of engineering applications such as actuators, biomedical, or robot coupling. In this work, a third alloying element, namely nanoparticles of Ag (which is insoluble in Ni-Ti matrix), is added by powder technology to the Ni-Ti alloy to produce a Ni-Ti-Ag alloy. The Nanoparticles of the Ag element are added at 3, 5, 7, and 10 wt. % to produce four alloy specimens with different mixtures .The mixing process was done by a horizontal mixer for 120 min with a speed of 350 …

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Investigation Of New Ipm Linear Machine Configuration With Low Permanent Magnet Used, Ahlam Shuraiji, Nattapong Pothi, Hashmia Dakeel Aug 2026

Investigation Of New Ipm Linear Machine Configuration With Low Permanent Magnet Used, Ahlam Shuraiji, Nattapong Pothi, Hashmia Dakeel

Engineering and Technology Journal

Permanent magnet (PM) machines have received numerous attentions, since they are distinguished by many desirable features including simple construction and high efficiency. However, high price of the permanent magnet material may be considered as the main problems of such machines. Hence, the demand of PM machine with high efficient PM materials used is increased. In this study a new configuration of PM linear machine with high efficient PM material utilization, named as V-shape interior PM linear machine is investigated. The mentioned machine has been compared to the conventional I-shape counterpart. In order to perform sensible comparison, I-shape and V-shape machines …

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Correlation Of Soil Liquefaction Potential Index And Geotechnical Properties For Baghdad City, Iraq, Hussein Karim, Zena Samueel, Dalia Abdul Hussein Aug 2026

Correlation Of Soil Liquefaction Potential Index And Geotechnical Properties For Baghdad City, Iraq, Hussein Karim, Zena Samueel, Dalia Abdul Hussein

Engineering and Technology Journal

This paper comprises the study and analysis of Baghdad soil for eight geotechnical properties, which extract from field experiments of 630 boreholes with depth taken to 30m and representing 200 sites. Soil investigation reports are composed from altered laboratory tests. The soil layers. Divided into each 2m, which means 15 studied’ layers and soil properties values were embraced and submitted. in tables and charts which have been analysis-using excel2013 and check the charts using curve expert program to get the relationships between the properties values and the factor of safety against liquefaction. The correlations between liquefaction potential represented by the …

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Behavior Of Cohesive Soil Reinforced By Polypropylene Fiber, Mohammed Al-Neami, Falah Raheel, Yassein Al-Ani Aug 2026

Behavior Of Cohesive Soil Reinforced By Polypropylene Fiber, Mohammed Al-Neami, Falah Raheel, Yassein Al-Ani

Engineering and Technology Journal

For any land-based structure, the foundation is very important and has to be strong to support the entire structure. In order for the foundation to be strong, the soil underneath it plays a very critical role. Some projects where the soil compacted by modifying energy is insufficient to achieve the required results, so the additives as a kind of installation and reinforcement are used to achieve the required improvement. This study introduces an attempt to improve cohesive soil by using Polypropylene Fiber instead of conventional kinds used in soil stabilization. Three different percentages (0.25%, 0.5%, and 0.75% by dry weight …

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Effect Of Modified Asphalt Cement Of The Performance Of Stone Matrix Mixtures, Duaa Khalaf, Zaynab Qasim, Karim Al Helo Aug 2026

Effect Of Modified Asphalt Cement Of The Performance Of Stone Matrix Mixtures, Duaa Khalaf, Zaynab Qasim, Karim Al Helo

Engineering and Technology Journal

This research investigates the behavior of Stone Matrix Asphalt mixtures (SMA) modified with styrene-butadiene-styrene (SBS) polymer at four percentages (1, 2, 3 and 4%) by weight of asphalt cement. The moisture susceptibility and rutting were taken into consideration in this study. To achieve the objective of this research the superpave system is conducted to design the asphalt mixtures. The physical properties of aggregate, bitumen and other mix materials were assessed and evaluated with the laboratory tests. The mixtures were prepared using penetration Graded (40-50) bitumen and a chemical named Polypropylene Fibers was used as a stabilizing additive. Fibers have been …

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Engine Performance With Diesel-Biodiesel Blends Fuel And Emission Characteristics, Marwa Kareem, Adel Saleh Aug 2026

Engine Performance With Diesel-Biodiesel Blends Fuel And Emission Characteristics, Marwa Kareem, Adel Saleh

Engineering and Technology Journal

In this study, the sunflowers oil was utilized as for producing biodiesel via a chemical operation, which is called trans-esterification reaction. Iraqi diesel fuel suffers from high sulfur content, which makes it one of the worst fuels in the world. This study is an attempt to improve the fuel specifications by reducing the sulfur content of the addition of biodiesel fuel to diesel where this fuel is free of sulfur and has a thermal energy that approaches to diesel.20%, 30% and 50% of Biodiesel fuel were added to the conventional diesel. Performance tests and pollutants of a four-stroke single-cylinder diesel …

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Arabic Speaker Identification System Using Multi Features, Rawia Mohammed, Nidaa Hassan, Akbas Ali Aug 2026

Arabic Speaker Identification System Using Multi Features, Rawia Mohammed, Nidaa Hassan, Akbas Ali

Engineering and Technology Journal

The performance regarding the Speaker Identification Systems (SIS) has enhanced because of the current developments in speech processing methods, however, an improvement is still required with regard to text-independent speaker identification in the Arabic language. In spite of tremendous progress in applied technology for SIS, it is limited to English and some other languages. This paper aims to design an efficient SIS (text-independent) for the Arabic language. The proposed system uses speech signal features for speaker identification purposes, and it includes two phases: The first phase is training, in this phase a corpus of reference database is built which will …

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Effect Of Different Laser Welding Parameter On Welding Strength In Polymer Transmission Welding Using Semiconductor, Farah Shaker, Mohanned Al-Khafaji, Kadhim Hubeatir Aug 2026

Effect Of Different Laser Welding Parameter On Welding Strength In Polymer Transmission Welding Using Semiconductor, Farah Shaker, Mohanned Al-Khafaji, Kadhim Hubeatir

Engineering and Technology Journal

In this work, the diode laser (810μm wavelength) was used for laser transmission welding application on PMMA (polymethylmethacrylate). The welding was done between opaqueness and transparent with thickness 2 mm and 2.57 mm, respectively. The effects of different process parameters, laser speed, spot size and force with different values (5, 15, 20 mm/min), (2, 2.5, 3mm) and (2, 6, 10 N) respectively were used to study their effect on weld width and strength. L9 Taguchi orthogonal array has been used to design the experiments and optimize the result. The result of the signal to noise ratio shows that, the width …

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Performance Improvement Of A Conventional Hydraulic Elevator By Using Electro-Hydraulic Servo Mechanism, Jamal Mohammed, Walaa Hashim, Bahaa Beram Aug 2026

Performance Improvement Of A Conventional Hydraulic Elevator By Using Electro-Hydraulic Servo Mechanism, Jamal Mohammed, Walaa Hashim, Bahaa Beram

Engineering and Technology Journal

An electro-hydraulic elevator is a new type of enhanced elevators that are used in low-rise buildings that do not exceed more than three floors. In this paper, an electro-hydraulic servo system for controlling the speed of a hydraulic elevator prototype by using a proportional valve and PID controller was investigated theoretically and experimentally. A three floors elevator prototype model with 76cm height was built including hydraulics components and electrical components. The elevator system is fully automated using the Arduino UNO board based Data Acquisition (DAQ) system. LabVIEW software is used to control the hydraulic elevator system through L298 DC drive …

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Velocity Kinematics Analysis And Trajectory Planning Of 5 Dof Robotic Arm, Tahseen Abaas, Ali Khleif, Mohanad Abbood Aug 2026

Velocity Kinematics Analysis And Trajectory Planning Of 5 Dof Robotic Arm, Tahseen Abaas, Ali Khleif, Mohanad Abbood

Engineering and Technology Journal

Trajectory planning is important in robots to achieve smooth path planning. This paper presents the velocity kinematics analysis and trajectory planning of a 5 DOF robotic arm. The Jacobian matrix is utilized to analyze the velocity kinematics and the third-order polynomial equation is used to determine the path of angle, velocity, and acceleration of the robotic arm. A 5 DOF robotic arm used with revolute joints and the motion of it is performed using the Arduino Mega2560 (microcontroller) which controlling on servo motors. The results of the velocity kinematics indicated the maximum linear velocity occurs with the z-direction and the …

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Extract The Similar Images Using The Grey Level Co-Occurrence Matrix And The Hu Invariants Moments, Beshaier Abdulla, Yossra Ali, Nuha Ibrahim Aug 2026

Extract The Similar Images Using The Grey Level Co-Occurrence Matrix And The Hu Invariants Moments, Beshaier Abdulla, Yossra Ali, Nuha Ibrahim

Engineering and Technology Journal

In the last years, many types of research have introduced different methods and techniques for a correct and reliable image retrieval system. The goal of this paper is a comparison study between two different methods which are the Grey level co-occurrence matrix and the Hu invariants moments, and this study is done by building up an image retrieval system employing each method separately and comparing between the results. The Euclidian distance measure is used to compute the similarity between the query image and database images. Both systems are evaluated according to the measures that are used in detection, description, and …

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Utilization Of Mineral Sequestration For Co2 Capturing In Car Parks And Tunnels, Aymen Alsaad, Tareq Al-Attar, Basil Al-Shathr Aug 2026

Utilization Of Mineral Sequestration For Co2 Capturing In Car Parks And Tunnels, Aymen Alsaad, Tareq Al-Attar, Basil Al-Shathr

Engineering and Technology Journal

Decreasing the emissions of CO2 that come from vehicle exhaust, especially in car parking and tunnels, is so vital. CO2 emissions cause corrosion to a reinforcement of concrete. Thus, there is a need to provide a layer that protects the reinforcement from the reach of this harmful gas. This work goals to investigate the efficiency of using board units from Pozzolime concrete and pervious concrete to sequestrate CO2 from the environment and then to convert it into calcium carbonate inside the concrete. The units have dimensions of (200×400×40±5). All specimens were cured in a water tank after about 48 hours …

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Pose Estimation Of Objects Using Digital Image Processing For Pick-And-Place Applications Of Robotic Arms, Firas Hameed, Hasan Alwan, Qasim Ateia Aug 2026

Pose Estimation Of Objects Using Digital Image Processing For Pick-And-Place Applications Of Robotic Arms, Firas Hameed, Hasan Alwan, Qasim Ateia

Engineering and Technology Journal

Robot Vision is one of the most important applications in Image processing. Visual interaction with the environment is a much better way for the robot to gather information and react more intelligently to the variations of the parameters in that environment. A common example of an application that depends on robot vision is that of Pick-And-Place objects by a robotic arm. This work presents a method for identifying an object in a scene and determines its orientation. The method presented enables the robot to choose the best-suited pair of points on the object at which the two-finger gripper can successfully …

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Influence Of Fly Ash Addition On Behavior Of Soft Clayey Soil, Hussein Karim, Zeena Samueel, Adel Jassem Aug 2026

Influence Of Fly Ash Addition On Behavior Of Soft Clayey Soil, Hussein Karim, Zeena Samueel, Adel Jassem

Engineering and Technology Journal

This paper investigates the impact of the fly Ash addition on the Geotechnical properties of soft soil as well as chooses the optimum percentage added of fly ash. To understand the behavior of fly ash mixed with soil, a number of laboratory experiments testing conducted on clayey soil-fly ash mixture in several percentages (5,10,15,20,25, and 30%) as Atterberg test, Specific gravity test, compaction test, California Bearing Ratio (C.B.R) Test, Unconfined Compressive Strength (UCS) Test, Consolidation Test. Test results indicate rising in plastic limit and liquid limit as fly ash adding. Specific gravity decreased essentially by adding fly ash. Whereas there …

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Vision Improvement Using Titanium Dioxide Nanoparticles-Doped Pmma For Contact Lenses, Lina Shaker, Ali Al-Hamdani, Ahmed Al-Amiery Aug 2026

Vision Improvement Using Titanium Dioxide Nanoparticles-Doped Pmma For Contact Lenses, Lina Shaker, Ali Al-Hamdani, Ahmed Al-Amiery

Engineering and Technology Journal

Polymer-based nanocomposites exhibit various optical virtues such as a high refractive index (RI), the dispersion index (Abbe number (νd)) and visible light transmittance (T %) about 95-99%. Titanium dioxide nanoparticles (TiO2 NPs) is suggested as a good candidate to rise the RI and maintain high transparency when it is integrated with Poly(methyl methacrylate) polymer PMMA because TiO2 NPs have a high RI (2.45 and 2.7 for anatase and rutile phase, respectively). The ocular performance was evaluated by modulation transfer function (MTF) and image simulation. The used criteria show that the best visual performance is obtained when TiO2-PMMA-CL of 0.1 wt/volume …

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Study Of Power System Load Flow Using Fpga And Labview, Ahmed Yaseen, Afaneen Abbood Aug 2026

Study Of Power System Load Flow Using Fpga And Labview, Ahmed Yaseen, Afaneen Abbood

Engineering and Technology Journal

The capability to rapidly execute the power flow (PF) calculations permit engineers in assured with stay bigger assured within the dependability, protection, and economical operation of their system within the case of planned or unplanned instrumentality failures. The purpose of this work is to investigate the use of FPGA characteristics to speed up power flow computing time for the on-line monitoring system of a power system. The work comprises which is the development of the Power flow program using the Fast-decoupled method based on FPGA (Field Programmable Gate Array), and LABVIEW (graphical programming environment). The program delivered very satisfactory results …

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Flexural Performance Of Reinforced Concrete Built-Up Beams With Sifcon, Ghazwan Mohammed, Kaiss Sarsam, Ikbal Gorgis Aug 2026

Flexural Performance Of Reinforced Concrete Built-Up Beams With Sifcon, Ghazwan Mohammed, Kaiss Sarsam, Ikbal Gorgis

Engineering and Technology Journal

The study deals with the effect of using Slurry infiltrated fiber concrete (SIFCON) with the reinforced concrete beams to explore its enhancement to the flexural capacity. The experimental work consists of the casting of six beams, two beams were fully cast by conventional concrete (CC) and SIFCON, as references. While the remaining was made by contributing a layer of SIFCON diverse in-depth and position, towards complete the overall depths of the built-up beam with conventional concrete CC. Also, an investigation was done through the control specimens testing about the mechanical properties of SIFCON. The results showed a stiffer behavior with …

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A Novel Application For Parabolic Trough Solar Collector Based On Helical Receiver Tube And Nano-Fluid With A Solar Tracking Mechanism, Saad Hamidi Aug 2026

A Novel Application For Parabolic Trough Solar Collector Based On Helical Receiver Tube And Nano-Fluid With A Solar Tracking Mechanism, Saad Hamidi

Engineering and Technology Journal

Novel techniques to enhance thermal performance using a helical coil receiver tube and Nano-fluid materials are presented in this paper. Two different applied techniques to enhance thermal performance are used as a new application on parabolic trough solar collector (PTSC). In the present work, PTSC has been fabricated using Dioxide Silicon SiO2 with an average particle size of 40nm by taking volume fraction of SiO2 0.1, 0.2 and 0.3%. Distilled water based Nano-fluid as a working fluid and a helical coil receiver tube were used in this paper. Varying the flow rate of Nano-fluids 100,150 and 200l/h are used, respectively. …

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Effect Of Orientation And Pre-Tension On Stresses Distribution On V-Die Bending Processes By Finite Element Method, Adil Jabber, Aseel Abed, Anwar Zabon Aug 2026

Effect Of Orientation And Pre-Tension On Stresses Distribution On V-Die Bending Processes By Finite Element Method, Adil Jabber, Aseel Abed, Anwar Zabon

Engineering and Technology Journal

Simulation of metal forming processes using the Finite Element Method (FEM) is a well-established procedure, being nowadays possible to develop alternative approaches, such as inverse methodologies, in solving complex problems. This study investigated the effect of orientation and pre-tension on stresses distribution numerically by software ANSYS 19 using the finite element method. The pre-tension is 55% from total strained in each rolling direction. The results show that the orientation has a significant effect on stresses distribution and stress value before and after pre-tension 55%. Although there is a regular distribution of stresses in three direction, but there is significant difference …

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Fabrication Of Ni-Zro2 Nanocomposite Coating By Electroless Deposition Technique, Hiba Algailani, Adel Mahmoud, Hanna Al-Kaisy Aug 2026

Fabrication Of Ni-Zro2 Nanocomposite Coating By Electroless Deposition Technique, Hiba Algailani, Adel Mahmoud, Hanna Al-Kaisy

Engineering and Technology Journal

This work aims preparation of Ni-based nanocomposite coating by electroless deposition method onto stainless steel (316L) substrate, the present work will compare the effects of incorporation of ZrO2 nanoparticles at different percentages (1.25 wt %, 2.25 wt %, and 4.25 wt %) Ni-based electroless deposition coating of the bath nanocomposite on the phase structure, microhardness, and corrosion resistance is studied. Where the structure and chemical composition of nanocomposite coatings were studied by using (X-ray), (SEM) and (EDS). of Ni - ZrO2 nanocomposite coating exhibits much-increased microhardness and remarkably improved corrosion resistance

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Analysis And Comparison Of Dc-Dc Boost Converter And Interleaved Dc-Dc Boost Converter, Karrar Faraj, Jasim Hussain Aug 2026

Analysis And Comparison Of Dc-Dc Boost Converter And Interleaved Dc-Dc Boost Converter, Karrar Faraj, Jasim Hussain

Engineering and Technology Journal

The step-up converters are widespread use in many applications, including powered vehicles, photovoltaic systems, continuous power supplies, and fuel cell systems. The reliability, quality, maintainability, and reduction in size are the important requirements in the energy conversion process. Interleaving method is one of advisable solution for heavy-performance applications, its harmonious in circuit design by paralleling two or more identical converters. This paper investigates the comparison performance of a two-phase interleaved boost converter with the traditional boost converter. The investigation of validation performance was introduced through steady-state analysis and operation. The operation modes and mathematical analysis are presented. The interleaved boost …

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Study Of The Barreling Of Copper Solid And Hollow Cylinders Under Uniaxial Compressive Load, Abdullah Assi Aug 2026

Study Of The Barreling Of Copper Solid And Hollow Cylinders Under Uniaxial Compressive Load, Abdullah Assi

Engineering and Technology Journal

In this study, the effect of axisymmetric compression of cylindrical blocksof copper on diameter ratio, height reduction ratio and aspect ratio wasnoted. The effects of these non-dimensional parameters are verysignificant to the geometry of barreling throughout the process of plasticdeformation of a cylinder under axial compression. The barreling effectwas studied for solid and hollow copper cylindrical blocks having differentdimensions. The relationship between the parameters was also studied.The practical results obtained were compared with some of the existingtheories, and there was a good correlation of the results with thesetheories.

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A Comparison Study On The Effect Of Various Layered Sandy Soil Deposited On Final Settlement Under Dynamic Loading, Hussein Karim, Zina Samuel, Mohammed Hussein Aug 2026

A Comparison Study On The Effect Of Various Layered Sandy Soil Deposited On Final Settlement Under Dynamic Loading, Hussein Karim, Zina Samuel, Mohammed Hussein

Engineering and Technology Journal

The foundation is expansion in base of column, wall or other structure in order to transmit the loads from the structure to under footing with a suitable pressure with soil property. There are two conditions to design foundation: 1. The stress is applied by footing on soil is not exceeded allowable bearing capacity ( ). 2. The foundation settlement and differential settlement are due to applied loads are not exceeding the allowable settlement that based on the type and size of structure, the nature of soil. Rigid square machine footing with dimension 200*200 mm with two types of relative density …

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Strut Confinement Of Simply Supports Deep Beam Using Strut Reinforcement, Eyad Sayhood, Khudayer Abdullah, Sarah Kazem Aug 2026

Strut Confinement Of Simply Supports Deep Beam Using Strut Reinforcement, Eyad Sayhood, Khudayer Abdullah, Sarah Kazem

Engineering and Technology Journal

This study investigates the effect of confining the Strut region of the deep beam by using Struts Reinforcement; which consists of four main bars enclosed by stirrups. Six specimens were tested for investigating the behavior of deep beams including; ultimate load, mid-span deflection, crack pattern, first shear and first flexure cracks, concrete surface strain and mode of failure. The specimens were tested under two symmetrical points load with and of 1 and compressive strength of 38 MPa. The main parameters were: first one the diameter of the main bars of Strut Reinforcement (8, 10, 12 mm) with constant spacing of …

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Preparation Of Al2o3/Mgo Nano-Composite Particles For Bio-Applications, Hayder Sallal, Alla Abdul-Hameed, Farhad. Othman Aug 2026

Preparation Of Al2o3/Mgo Nano-Composite Particles For Bio-Applications, Hayder Sallal, Alla Abdul-Hameed, Farhad. Othman

Engineering and Technology Journal

This study describes the preparation and study of the properties of Nano composite particles prepared in a sol-gel method which consists of two materials (Αl2Ο3-MgΟ). The powder was evaluated by x-ray diffraction analysis, scanning electron microscopy analysis (SEM), particle size analysis, and energy dispersive x-ray analysis (EDX) and antibacterial test. The evaluation results of the nanocomposite particles shows a good distribution of the chemical composition between aluminum oxide and magnesium oxide, smoothness in particles size where it reached to (54.9, 59.8) nm at calcination in (550 0C and 850 0C) respectively, formation of different shapes of nanoparticles and different phases …

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Effect Of Octane Number On Performance And Exhaust Emissions Of An Si Engine, Noor Athafah, Adei Salih Aug 2026

Effect Of Octane Number On Performance And Exhaust Emissions Of An Si Engine, Noor Athafah, Adei Salih

Engineering and Technology Journal

Spark ignition engines are very popular engines that they are running millions of vehicles all over the world. This engine emits many harmful pollutants, such as CO, UHC, and NOX. In this paper, the impact of gasoline octane number on the engine performance and exhaust emissions was studied. In the tests, four-cylinder, four-stroke engine, and two variable octane numbers (RON83 and 94.5) were used. The engine was run at different engine speeds and loads. The results from the experimental study indicated that the brake specific fuel consumption (bsfc) of RON94.5 was higher than RON83 by 13.93%, while the brake thermal …

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Experimental Investigation Of Combined Effect Of Particle Size And Stability Of Al2o3-H2o Nanofluid On Heat Transfer Augmentation Through Horizontal Pipe, Abdulhassan Karamallah, Hayder Abed Aug 2026

Experimental Investigation Of Combined Effect Of Particle Size And Stability Of Al2o3-H2o Nanofluid On Heat Transfer Augmentation Through Horizontal Pipe, Abdulhassan Karamallah, Hayder Abed

Engineering and Technology Journal

The stability of nanofluid plays a rule in heat transfer growth for different engineering systems. The stability and particle size of Al2O3-H2O nanofluid effects on heat transfer are studied experimentally. Two particle sizes (20 and 50 nm) with (0.1, 0.5 and 1%) concentrations were prepared and tested under constant heat flux (1404 W) with fully developed turbulent flow through a horizontal pipe. The results show an increase in Nusselt number by 20.7% and 17.6% with 1 vol.% concentration for 20 and 50 nm, respectively compared to distilled water. Examined nanofluid showed improvement in Nu number by (30.3 and 23.5) % …

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Effect Of Pre-Tension On The Springback Behavior Of The Yellow Brass, Anwar Zabon, Aseel Abed Aug 2026

Effect Of Pre-Tension On The Springback Behavior Of The Yellow Brass, Anwar Zabon, Aseel Abed

Engineering and Technology Journal

Springback forecasting of sheet formation is constantly remarkable problem in the métier, due to their influence the great in the definitive shape of the product. Study presents effects of pretension in tow rolling direction (0, 45 degree) on the springback behavior of the (Brass 65-35) sheet under V-die bending by an experimental. The pretension ranges from five different pretensions levels starting from 11% to 55% from total strain in each rolling direction by increment of 11%. used in punching that was performed at a constant deformation velocity of (5 mm/min) then bent on a 90° V-shaped die for the springback …

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